AMSR-E Slow Rotation Data
Format Description DocumentiEffective Page List
Page
All

SymbolRev. A

ii

Revision History
Rev
NC
A

Date
Sep. 2013
Mar. 2014

Revised Pageall
L1S-2,10
L1S-14,16
L1S-41(39),42(40)L1S-45(47)Description
First Release
Typo correctedTypo corrected
The expression and the contents of explanation were improved.
The expression and the contents of explanation were improved.

iii

Data Configuration History
Date
2013/09

Scene ID

PGE Version

Contents

444*44****44440444

Release of AMSR-E Slow Rotation Data

iv

Contents
1.

Introduction ................................................................................................................................................ 1
1.1. Abstract............................................................................................................................................... 1
2. Abstract of the Satellite and Sensor............................................................................................................ 2
2.1. Overview of Aqua (EOS-PM; Earth Observation Satellite-PM) ........................................................ 2
2.2. Overview of AMSR-E ........................................................................................................................ 4
3. Abstract of the observation method ............................................................................................................ 5
3.1. Principal of AMSR-E Observation ..................................................................................................... 5
3.2. Observation of AMSR-E Normal Rotation Mode .............................................................................. 5
3.3
Observation of AMSR-E Slow Rotation Mode .................................................................................. 6
4. AMSR-E Slow Rotation Data..................................................................................................................... 8
4.1. Definition of a Scene for AMSR-E .................................................................................................... 8
4.2. AMSR-E Slow Rotation Data Specification..................................................................................... 10
5. HDF .......................................................................................................................................................... 11
5.1. Outline of HDF................................................................................................................................. 11
5.2. HDF File ........................................................................................................................................... 11§L1S.

AMSR-E Slow Rotation Data Format Descriptionv

1.

Introduction

This document is the data format description of AMSR-E (Advanced Microwave Scanning Radiometer for EOS)
on boarded Aqua (EOS-PM; Earth Observation Satellite-PM).

1.1.

Abstract

AMSR-E products are shown in Table 1.1-1. This document explains AMSR-E Slow Rotation Data products.
The observation method of normal rotation (40rpm) and slow rotation (2rpm) of AMSR-E are indicated in
Chapter 3.

Table 1.1-1 Types of AMSR-E products
Outline of the productProduct level
1A

This product includes observed sensor data, the radiometric correction conversion coefficients,
and geometrical information of each sampled observation. Observed sensor data is raw counted
value, and geometrical information contains geo-location of observed surface on the earth, solar
angle, directional vector to Aqua, and so on.

1B

This product includes the brightness temperature converted by the radiometric correction
coefficients from observed sensor data of level 1A. It also contains the ancillary data stored inlevel 1A product.

1S

This product includes observed sensor data

the brightness temperature converted by theradiometric correction coefficients from observed sensor data, geometrical information solar
angle, direction vector to Aqua, and so on,
2This product includes physical parameters related the hydrology (accumulated water vapor,accumulated cloud liquid water, amount of precipitation, sea surface wind speed, sea surface
temperature, sea ice concentration, snow water equivalence, and soil moisture) produced from
L1B products, and ancillary information.

2 Map

This product is clipped from level 2 product for some 3000 km around and map projected, andincludes ancillary information.

3

There are two kinds of these products such as daily or monthly averaged observation data. It
includes ancillary information and map projected onto global grids.

Remarks: The shaded products in the above list are by normal rotation of AMSR-E. (40rpm)

12. Abstract of the Satellite and Sensor
2.1.

Overview of Aqua (EOS-PM; Earth Observation Satellite-PM)

The earth observing satellite Aqua of NASA was launched from the Vandenberg Firing Range in California by a
DELTA II launch vehicle in May 2002. Aqua observes various kinds of physical phenomena related to water andenergy circulation from space. Aqua data will promote the research activities for interactions between theatmosphere, oceans and lands, and their effects on climate changes.

There are a lot of derived data from Aqua data such as atmospheric temperature, humidity, clouds andprecipitation, earth radiation, snow and sea ice, sea-surface temperature, oceanic primary production, and soil
water. These collected datasets are expected to promote the further development of research on global
environmental change, as well as improving numerical weather forecasts.

Aqua satellite is shown in Figure 2.1-1. Its main characteristics and sensors are listed in Table 2.1-1 and Table
2.1-2.

Figure 2.1-1 Aqua Satellite2Table 2.1-1

Orbit

AMSR-E
AMSU
AIRS
CERES
HSB
MODIS
* JAXA:* NASA:* INPE:

Main characteristics of Aqua

Launch Date

May 4th, 2002

WeightAbout 3,000 kg (at launch)Power4,444 W (Average)Life

6 years (Target)
Category

Sun-synchronous sub-recurrent orbit

Altitude

705 kmInclination

98 ± 0.1degrees

Period98.9 minutes

Revisit Period

16 days

Local Sun Time

PM13: 30 ± 15 minutes

Table 2.1-2 Instruments of Aqua
Instrument
Development organization(Country)
Advanced Microwave Scanning Radiometer for EOS
JAXA（Japan）
Advanced Microwave Sounding Unit
NASA
（US）
Atmospheric Infrared Sounder
NASA
（US）
Clouds and the Earth’s Radiant Energy System
NASA
（US）
Humidity Sounder for Brazil
INPE（Brazil）
Moderate Resolution Imaging Spectroradiometer
NASA
（US）
Japan Aerospace Exploration Agency
National Aeronautics and Space Administration
Institute National de Pesquisas Espaciais

3

2.2.

Overview of AMSR-E

AMSR-E (Advanced Microwave Scanning Radiometer for EOS) has the largest-diameter microwave scanningradiometer (about 1.6 meters), and it can observe water relevant data with high resolution. Moreover, AMSR-E
observes microwaves instead of optical data, and it can observe from day to night, under any weather conditionand less cloud effects. AMSR-E will demonstrate advantages and viabilities of microwave-based observation ofland and sea under clouds.

AMSR-E measures the radiation from the earth surface or atmosphere. The data obtained by AMSR-E isconverted to brightness temperature by the temperature of CSM (Cold Sky Mirror) and HTS (High Temperaturenoise Source, the radiometric wave absorber). It will provide geophysical information relevant to water such as
the integrated water vapor, integrated cloud liquid water, precipitation, sea surface wind speed, sea surface
temperature, sea ice concentration, snow water equivalent, and soil moisture and so on.
Main characteristics of AMSR-E are shown Table 2.2-1.

Table 2.2-1
Frequency (GHz)
Resolution
Band Width (MHz)6.9

Main Characteristics of AMSR-E

10.65

23.8

36.5

89

About 50 km

About 25 km

15 km

5 km

350

200

1000

3000

100

18.7

400

Polarization

Horizontal and Vertical

Incident Angle

About 55 degrees

Cross Polarization

Under -20 db

Characteristics
Swath Width

About 1450 km

Dynamic Range

2.7-340 K

Absolute Accuracy

1 K (1-sigma)

Temperature Resolution

0.3-1 K (1-sigma)

Quantization bits

12 bits

10 bits4

3. Abstract of the observation method
3.1.

Principal of AMSR-E Observation

An object emits the electromagnetic wave of various wavelengths from its surface in microwave region (1-100
GHz). The electromagnetic intensity differs by its physical features, observing frequencies, and so on. Using thesecharacteristics, AMSR-E observes the faint microwave emitted from the earth surface or the atmosphere.

AMSR-E main reflector rotates to scan and collect radiation of the microwave from the earth surface or theatmosphere. After the microwave was concentrated with its main reflector, it was distributed to the six receivers.
The microwave signals detected by each receiver are amplified and integrated, then converted to the digital countvalue by an A/D converter. These values are the observation raw data of a level 1 product. Furthermore each
receiver observes the microwaves of background radiation from the deep space and radiation from the absorberwhich temperature is controlled for the specific temperature. These data are applied to correct the observation
data.
3.2.

Observation of AMSR-E Normal Rotation Mode

AMSR-E is a conical scan sensor. The antenna observed by 40 times per minute in AMSR-E Normal Rotation
Mode (40rpm).
AMSR-E sweeps the surface of the Earth at about ±75° centered at the direction of the satellite flight. The swath
width is about 1450 km. The scanning period is 1.5 sec (*1) and the data-sampling interval is every 2.6msec for
6GHz - 36GHz, 1.3msec for 89GHz and triggered by the antenna rotation. As a result, the AMSR-E samples 486
data points for a scan of 89GHz and 243 points for other channels (See Fig. 2.4-1).
*1: In AMSR-E Normal Rotation Mode, it is defined one rotation as one scan.

Satellite Flight Direction

Observation Range

75 degAMSR-E
Scanning
Direction

The electromagnetic wave
absorber（HTS）

Cold Sky Mirror（CSM）

Figure 2.4-1 Observation Geometry of AMSR-E

5

3.3.

Observation of AMSR-E Slow Rotation Mode

AMSR-E has been operated in AMSR-E Slow Rotation Mode since Dec. 4th, 2012.The antenna observed by about
2 times per minute in AMSR-E Slow Rotation Mode (2.076701rpm). As a result, the scanning period is 28.89 sec.
In AMSR-E Slow Rotation Mode, AMSR-E sweeps the surface of the Earth at about ±75 degree centered at thedirection of the satellite flight.
And the observing interval is 2.0 sec, start point of the observation timing is the about 120 degrees
counterclockwise on the direction of the satellite flight. This observation timing is reset after 2 rotations of theantenna.
The data-sampling interval is every 2.6msec for 6GHz – 36GHz, 1.3msec for 89GHz, these interval are same as
AMSR-E Normal Rotation Mode. As a result, the AMSR-E samples 486 data points for a scan of 89GHz and 243
points for other channels.
In AMSR-E Slow Rotation Mode, AMSR-E observes by about 29 times per minute as shown in Figure3.3-1.
AMSR-E Normal Rotation Mode defines one rotation as one scan, but AMSR-E Slow Rotation Mode defines
observing interval of one time as one scan (Figure3.3-2).

♯10

♯24

♯25

♯11

♯23

♯9
♯26
♯12

♯8
♯22
♯27

♯13

♯7

odd rev.

♯21

even rev.

♯28

♯14
♯6

28.0s

♯1

0.0s

CSM and HTS observed
range at 40rpm

♯15

♯5

♯19
♯16

♯4

♯2
♯3

♯20

♯29

rotation

♯15

30.0s

♯18
♯17

2.0s

Figure 3.3-1 observation timing of AMSR-E Slow Rotation Mode

The schematic diagram of AMSR-E Slow Rotation Mode is shown below.

6observed 110km(1 scan)each 348km(2 seconds)

one rotation in
28.89 seconds

36GHz-Vpol. 2013-03-11 path=019D @2.076701rpm

Figure 3.3-2 Schematic diagram of AMSR-E observation(AMSR-E Slow Rotation Mode)

In AMSR-E Slow Rotation Mode, the interval for every scan is coarse and it becomes the schematic diagram of
AMSR-E observation thinned out compared with AMSR-E Normal Rotation Mode.
In AMSR-E Slow Rotation Mode, the CSM/HTS are observed 2 times per minute and the amount of these data
decrease from AMSR-E Normal Rotation Mode.
Brightness temperature in AMSR-E Slow Rotation Mode is calculated from ±120sec averaged CSM/HTS values(Figure3.3-3).
Earth

CSM

Earth

HTS

observed data
(count values)

scan azimuth-120 sec+120 sec

28.89s/rev
HTS

CSM

1scan

flight direction

brightness
temperature

240 second (+/- 4.2 rotation) averaged

count value

Figure 3.3-3 The range of the calibration data used for calculation of brightness temperature

7

4.
4.1.

AMSR-E Slow Rotation Data
Definition of the scene for AMSR-E

A scene of AMSR-E Slow Rotation Data is defined as a half orbit between the South and North Poles for its
observed position on the earth (See Table 3.1-1). An observed position of AMSR-E is not nadir but little forward
to the satellite flight direction. Therefore, a scan location shifts about 2.5 minutes earlier from the satellite nadiron the orbit (Figure. 3.1-1).
In AMSR-E Slow Rotation Mode, the observed range of the surface of the Earth is shown in Table 3.1-2 andFigure 3.1-2.
The number of scans of a scene is calculated with the orbital revisit period, the total number of paths, and thescanning interval. For AMSR-E, the number of scans is 1485 scans in a half orbit 49.4 minutes.

1484.3= 86400[sec/day]*16[day/rec] / 233[orbits/rec] / 2.0[sec/scan] / 2[scene/orbit] + 1[the other pole]This number will be changed under the influence of the attitude fluctuation.

Orbit Direction
Ascending Scene

Table 3.1-1 Definition of a Scene for AMSR-E
Definition
The scan including the two-poles point from the southernmost point to thenorthernmost point of a half orbit

Descending Scene

The scan including the two-poles point from the northernmost point to thesouthernmost point of a half orbit

Processing level/Frequency

Table 3.1-2 Center Position of a Scan
The range of observations
The number ofData of Brightness
Data except
observation points
Temperature
Brightness Temperature

Except for 89GHz

243±61 degree±75 degree

89GHz

486

±61 degree±75 degree

L1S

8The North Pole
Aqua/AMSR-E

1 Scene (Descending)

1 Scene (Ascending)

about 2.5min

The Earthabout 2.5min

Aqua/AMSR-E

The South Pole

Figure 3.1-1 Geometry of a scene and the flight direction of Aqua

Satellite Flight Direction
the range of observations

♯10

♯11

♯9

♯12

♯8

61 deg♯13♯7
75 deg120 deg

♯14

♯6

♯5

♯1
♯4

♯2

♯3

out of the range of observations

Figure 3.1-2 Geometry of the range observations of AMSR-E Slow Rotation Data

9

4.2.

AMSR-E Slow Rotation Data Specification

AMSR-E Slow Rotation Data is one file per one scene. The number of scans of one product is about 1500 scans.
The specification of the AMSR-E Slow Rotation Data is shown below.

Table 4.2-1 Specification of AMSR-E Slow Rotation Data
Level

Production

1S

PlannedThe number of scans

Scanning width*1

Half Orbit +243: except 89GHz

Overlaps (each 10 scans at both ends)

486: 89GHz*1. The data of outside the range of observations is stored as dummy value.

Table 4.2-2 Level of processing in AMSR-E
Level
1A

Processing Explanation

The state of observation data

・ After sorting packets of observation data, deletes the duplicated Raw data
packets.
・ The missing packets in the raw data (Rate Buffered Data) are filledwith dummy data.
・ 12 bit and 10 bit observation datasets are converted into 16 bit 2 byte
data.
・ Calculates the conversion coefficient from the raw data to the antenna
temperature used for next step processing, L1B processing.
・ Calculates longitude/latitude of observation positions, incident angle,
the direction of sun, and so on.
・ Add the information of the missing packets and other quality
information.
・ Add the land/ocean flags.
・ Add the overlapped 10 scans to the start and end of the scene.

1B・ The raw data value are converted into the brightness temperature Brightness temperature
through calculating antenna temperature.
・ The observation data range is changed to the antenna angle from -61
degree to +61 degrees.

1S・ Stored raw data and brightness temperature, the data range of each Raw data and Brightness
temperature

value are same as level1A and Level1B.
・ Add the longitude/latitude of observation positions for each low
frequency.

Remarks:The shaded products in the above list is a product made by AMSR-E Normal Rotation Mode.

10

5.
5.1.

HDF
Outline of HDF

HDF (Hierarchical Data Format) is developed by NCSA (The National Center for Supercomputing Applications;the University of Illinois) and its objects are machine- and medium- independent and physical representations ofdata and metadata. HDF can store many varieties of data structure. HDF files are equally accessible by routines
written either in FORTRAN or in C provided freely by NCSA.
5.2.

HDF File

HDF is a file that consists of the item name and value, and stores them hierarchically. The item name of a data
set is using a common name between products, and becomes a key for searching the target data. The HDF library
prepares six kinds of data models for storing data sets, and provides the interface. The suitable data model isselected based on the classification and composition of data, and the purpose. Regarding AMSR-E Slow Rotation
Data, the HDF library is version 4.2r4, and the following three data models are adopted.


Global Attribute

Global Attribute is used for storing attribute information of a character and a numerical value. In AMSR-E
Slow Rotation Data, this model is used for the core meta-information and product meta-information. This
information is stored as text.


Vdata

The Vdata is used for storing customized data records. A Vdata object is a one-dimensional array ofrecords. Each record in a Vdata object contains a set of elements, which adhere to a specifically defined
template. In AMSR-E Slow Rotation Data, this model is used for the scanning start time.


Scientific Data Sets (SDS)

SDS is used for storing the data of n-dimensional array. Data values in a data set are stored with standard
data type (8, 16 or 32 bits signed/unsigned integer, or 32, 64 bits floating point number). Moreover, it canhave attribute information corresponding to the data value in a SDS. In AMSR-E Slow Rotation Data, thismodel is used for all data except for the scanning start time.

11

§L1S

AMSR-E Slow Rotation
Data Format Description

Contents

1

EXPLANATION OF THE AMSR-E SLOW ROTATION DATA ..................................................................... 1
1.1
1.2
1.3
1.4

AMSR-E SLOW ROTATION DATA STRUCTURE............................................................................... 1
FILE STRUCTURE ........................................................................................................................... 1
DATA SIZE OF ONE AMSR-E SLOW ROTATION DATA .................................................................. 25
THE OTHERS ................................................................................................................................ 26

1.4.1
1.4.2
1.4.3
1.4.4

2

File Name Convention ....................................................................................................... 26
Definition of the AMSR-E Slow Rotation Data Range .................................................... 26
Coordinate System ............................................................................................................. 26
Scaling Factor..................................................................................................................... 26

DATA EXPLANATION.................................................................................................................................... 27
2.1
2.2
2.3

CORE METADATA ......................................................................................................................... 27
PRODUCT METADATA................................................................................................................... 33
DATA ITEMS ................................................................................................................................. 38

L1S-i

1

Explanation of the AMSR-E Slow Rotation Data

The AMSR-E Slow Rotation Data stores the value of observed microwave radiation from the earth surface and it’sgeometric information as HDF. The features of the AMSR-E Slow Rotation Data are shown below.


Range of data
The AMSR-E Slow Rotation Data is extracted data in range of a half orbit between the South Pole and North
Pole from level 0 data (Science and GBAD data).

Observation width
The range of the observation is ±75 degrees centered at the flight direction. (See Figure 1-1.) 243 data points
are observed for each frequency below 89GHz and 486 points for 89GHz.
The range of the observation data converted to Brightness Temperature is ±61 degrees centered at the flight
direction.



Main items of stored data-

Scan time-

Count value of the antenna temperature for the earth surface observation data-

Radiometric conversion coefficients-

Brightness temperature of the earth surface observation data.

-

Geometric information (position, observation incidence angle, sun azimuth angle, etc.)-

Quality information-

Others (the information of the satellite, sensor, and data etc.)
Spacecraft Flight Direction

0 [deg]-61 [deg]-75 [deg]

Level 1S Data Range

Antenna Rotation+61 [deg]+75 [deg]

AMSR-E

Figure 1-1 The Data Range of the observation for AMSR-E (Level 1S)

L1S-1

1.1

AMSR-E Slow Rotation Data Structure

The logical structure of AMSR-E Slow Rotation Data is shown in Table 1-1.

Table 1-1 Logical Structure of AMSR-E Slow Rotation Data
Structure

HDF Data Model

Contents
The general information of the AMSR-E Slow Rotation

Core Meta

Global Attribute

Header Part

Data is stored. It is based on the indispensable item of theattribute of NASA ECS (B. 0).

Product Meta

Global Attribute

Main characteristics of AMSR-E and the conversion tableof the engineering values, etc. are stored.
The data shown below is stored.

Data Part

Vdata SDS

Scan Time

Raw values of Observation DataBrightness TemperatureCalibration DataSupplementary information(Positions, Orbits, Attitudes, Coefficients,
Observation incidence angle, the sun azimuth, etc.)
1.2

Quality information

File Structure

The file structure of AMSR-E Slow Rotation Data is shown in Figure 1.2-1. The explanation for the core metadataof the header part is shown in Table 1.2-1, and the product metadata is shown in Table 1.2-2.
Moreover, the explanation for each item of the data part shows the data size and the scale factor in Table 1.2-3, andthe data structure in Figure 1.2-2 - 1.2-15.

L1S-1

A

AMSR-E Slow Rotation Data
Core Metadata
Product Metadata（Header）（Data）

(SDS)

Scan

Scan TimenGHz-pol (Of + Sl)

Scan

Scan

Position in Orbit

Observation CountnGHz-pol (Of + Sl)

x, y, z, x', y', z'(SDS)

Rx Offset/Gain Count
6, 10, 18,
23, 36, 50

in the scan

(SDS)
Scan

Navigation Data

Attitude Data

89A,
89B

89A,
89B

in the scan

(SDS)
Scan

in the scan

(SDS)

6

Longitude folow
frequencies

in the scanin the scan22

Latitude for89GHz
frequencies

Longitude for89GHz
frequencies

in the scan
(SDS)

(SDS)
Scan

Scan

Sun Azimuth

(SDS)
Scan

Scan

6

Latitude forlow
frequencies

in the scan

(SDS)

Scan

6, 10, 18, 23,
36, 50, 89A

roll, pitch, yaw

Scan

Scan

Antenna Temp Coef

Brightness Temperature

(SDS)

(SDS)

Scan

(16 SDS)(16 SDS)Scan6, 10, 18,
23, 36, 50

In the scan

In the scan

(V data)in the scan
(SDS)

(SDS)

Scan

Sun Elevation

Scan

Earth Incidence

Earth Azimuth

in the scan
(SDS)

(SDS)
Scan

Scan

(SDS)

(SDS)

Scan

Scan

7

Observation
Supplement

Land/Ocean Flagfor
6_10_18_23_36_50_89A

SPC
Temperature Countin the scan

SPS
Temperature Countin the scan

(SDS)

(SDS)

(SDS)
Scan

Scan

Data Quality

Scan
12

4

Pixel Data Quality 6 to 52

Pixel Data Quality 89

Data Structure
Figure 1.2-1 The Data Structure

L1S-2

Table 1.2-1 Core Meta Items (1/2)
Items (Attribute Name)

Explanation

Concrete Values or Examples

LocalGranuleID
ProcessingLevelID

The abbreviated name of the AMSR-E Slow Rotation
AMSREL1S
Data
The version ID of the AMSR-E Slow Rotation Data RELEASE4
Data size of the AMSR-E Slow Rotation Data
28.5
(Mbytes)
AMSR-E Slow Rotation Data management number P1AME130731222MD_T01S0000000
ID of processing level
L1S

ReprocessingActual

Re-processing date (UTC)

Blank or 2002-08-10

ProductionDateTime
RangeBeginningTime
RangeBeginningDate
RangeEndingTime
RangeEndingDate
GringPointLatitude
GringPointLongitude
PGEName
PGEVersion

AMSR-E Slow Rotation Data creation date (UTC)Start time of observation data (UTC)Start date of observation data
End time of observation data (UTC)End date of observation data
Latitude of data effective range
Longitude of data effective range
Data processing software name
Data processing software version

InputPointerInput file name

ProcessingCenter
ContactOrganizationName
StartOrbitNumber
StopOrbitNumber
EquatorCrossingLongitude
EquatorCrossingDate
EquatorCrossingTime

Data processing center
Contact organization nameStart orbit number
End orbit number
Longitude at the time of equatorial passage
Date of equatorial passage
Time of equatorial passage

2013-08-17T14:09:01.000Z
04:14:54.06Z
2013-07-31
05:04:54.59Z
2013-07-31
Blank
Blank
L1S_Process_Software
4444*44****44440444
R1540402SGS21321205500000.RBD,
R1540402SGS21321207800000.RBD
Blank
Blank
59793
59793
-46.002013-07-31
04:39:48.32Z

ShortName
VersionID
SizeMBECSDataGranule

L1S-3

Attention

Fix/
ExampleFix
ExampleExampleExampleFix

Date only set for
Re-processing(0-Fill for blank)
0-Fill for blank
0-Fill for blank
0-Fill for blank
0-Fill for blank
0-Fill for blank

ExampleExampleExampleExampleExampleExampleFix
Fix
Fix
ExampleExample0-Fill for blank
0-Fill for blank

Fix
Fix
ExampleExampleExampleExampleExampleTable 1.2-1 Core Meta Items (2/2)
Items (Attribute Name)

Explanation

Concrete Values or Examples

Attention

OrbitDirection
Orbit direction
DESCENDING
EphemerisGranulePointerOrbit data file name20130731.ELMD
EphemerisType
Type of orbit data
ELMD
PlatformShortName
Abbreviated name of Platform
EOS-PM1
SensorShortName
Sensor name
AMSR-E
NumberofScans
Number of scans
1507
NumberofMissingScans
Number of missing packets
1
ECSDataModel
Meta data model name
B.0
DiscontinuityVirtualChannelCo Judgement of virtual channel unit counter
DEAD Encounter
unter
discontinuity
QALocationPacketDiscontinuit
Judgment of packet sequence counter discontinuity discontinuationyNumberofPackets
Number of packets
24112
NumberofInputFiles
Number of input files
1
NumberofMissingPackets
Number of missing packets
16
NumberofGoodPackets
Number of good packets
24096
ReceivingCondition
Receiving condition
Blank
EphemerisQA
Ephemeris limit check
OK
AutomaticQAFlag
Limit check by software
Blank
AutomaticQAFlagExplanation Explanation of limit check by softwareBlank
The quality flag when computing the amount of
ScienceQualityFlag
Blank
physical values
Explanation of the quality flag when computing theScienceQualityFlagExplanation
Bank
amount of physical values
QAPercentMisssingData
Percentage of missing data0
QAPercentOutofBoundsData Percentage of out of bound data0
QAPercentParityErrorData
Percentage of parity error data0
ProcessingQADescription
Description of the processing error
PROC_COMP
ProcessingQAAttirbute

The attribute name which is abnormal by QA
Blank or NumberofMissingPackets
metadata

L1S-4

Fix/
ExampleExampleExampleExampleFix
Fix
ExampleExampleFix
ExampleExampleExampleExampleExampleExampleFix
Example
Fix
Fix
Fix
Fix
ExampleExampleExampleExampleAn attribute nameis set up only at thetime of unusual
generating.

ExampleTable 1.2-2 Product Meta Items (1/4)
Items (Attribute Name)

Explanation

Concrete Values or Examples

SatelliteOrbit
AltitudeOrbitSemiMajorAxis
OrbitEccentricity
OrbitArgumentPerigee
OrbitInclination
OrbitPeriod
RevisitTime

The kind of Satellite’s orbit
The altitude of Satellite
The orbit semi-major axis
The orbit eccentricity
The orbit argument perigee
The orbit inclination
The orbit period
Orbit recurrent days

AMSRChannel

The kind of AMSR channels

AMSRBandWidthBand width of AMSRAMSRbeamWidth

Beam width of AMSR

OffNadirOff-nadir angle

SpatialResolution(AzXEl)

Spatial resolution

ScanningPeriod
SwathWidth
DynamicRange
DataFormatType
HDFFormatVersion
EllipsoidName
SemiMajorAxisofEarth
FlatteningRatioofEarth
SensorAlignment

Scanning period
Swath width
Dynamic range
Data format typeHDF format version
Earth ellipse model
Earth equatorial radius
Flattening ratio of earth
Sensor alignment
The effective range of a thermistor engineering value
60,585,770,872,924,952,961,1023
conversion factor

ThermistorCountRangeWx

Sun-synchronous_sub-recurrent
707.9km
7085.858km
0.00095
106.480deg
98.15deg
98minutes
16days
6.925GHz,10.65GHz,18.7GHz,23.8GHz,36.5GHz,89.0GHz-A,89.0GHzB
6G-350MHz,10G-100MHz,18G-200MHz,23G-400MHz,36G-1000MHz,
50.3G-0,52G-0,89GA-3000MHz,89GB-3000MHz
6G-1.8deg,10G-1.2deg,18G-0.64deg,23G-0.75deg,36G-0.35deg,
50.3G-0,52G-0,89GA-0.15deg,89GB-0.15deg
47.0deg: 89GB, 47.5deg: others
6G-43.2kmX75.4km,10G-29.4kmX51.4km,18G-15.7kmX27.4km,23G-18.1kmX31.5km,
36G-8.2kmX14.4km,50.3G- ,52G- ,89GA-3.7kmX6.5km,89GB-3.5kmX5.9km
28.89 sec
1450km
2.7K-340K
NCSA-HDF
Ver4.2r4
WGS84
6378.1km
0.00335
Rx=0.00000,Ry=0.00000,Rz=0.00000

L1S-5

Fix/
Example
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix

Table 1.2-2 Product Meta Items (2/4)
Items (Attribute Name)
ThermistorConversionTable
Wa
ThermistorConversionTable
Wb
ThermistorConversionTable
Wc
ThermistorConversionTable
Wd
Platinum#1CountRangeWx
Platinum#1ConversionTable
Wa
Platinum#1ConversionTable
Wb
Platinum#1ConversionTable
Wc
Platinum#1ConversionTable
Wd
Platinum#2CountRangeWx
Platinum#2ConversionTable
Wa
Platinum#2ConversionTable
Wb
Platinum#2ConversionTable
Wc
Platinum#2ConversionTable
Wd

Explanation
Thermistor conversion table: Wa
Thermistor conversion table: Wb
Thermistor conversion table: Wc
Thermistor conversion table: Wd

Concrete Values or Examples
0.000000,0.000015,0.000161,0.000618,0.002331,0.011459,0.010101,0.00
0000
0.000000,0.056460,-0.109878,-0.819170,-3.801865,-20.783040,-18.2121
20,0.000000-35.000000,-38.250000,9.220000,284.170000,1582.770000,9480.000000,
8263.350000,90.000000

Fix/
Example
Fix
Fix
Fix

0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0

Fix

Platinum#1 count range: Wx1168,1296,1536,1752,4095

FixPlatinum#1 conversion table: Wa

0.0,0.0,0.0,0.0,0.0

Fix

Platinum#1 conversion table: Wb

0.000000,0.039000,0.042000,0.039000,0.042000

Fix

Platinum#1 conversion table: Wc-35.000000,-80.625000,-84.000000,-80.000000,-84.667000

Fix

Platinum#1 conversion table: Wd

0.0,0.0,0.0,0.0,0.0

Fix

Platinum#2 count range: Wx

272,1536,1792,2032,2288,3248,3712,4095

FixPlatinum#2 conversion table: Wa

0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0

Fix

Platinum#2 conversion table: Wb
Platinum#2 conversion table: Wc
Platinum#2 conversion table: Wd

0.000000,0.078300,0.078000,0.083000,0.078000,0.083000,0.085300,0.00
0000-140.000000,-161.440000,-160.000000,-169.333000,-158.750000,-170.66
7000,-177.640000,140.000000
0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0

L1S-6

Fix
Fix
Fix

Table 1.2-2 Product Meta Items (3/4)
Items (Attribute Name)

Explanation

Concrete Values or Examples

Platinum#3CountRangeWx
Platinum#3ConversionTable
Wa
Platinum#3ConversionTable
Wb
Platinum#3ConversionTable
Wc
Platinum#3ConversionTable
Wd

Platinum#3 count range: Wx

349,1454,2000,2555,3059,3566,4020,4095

Platinum#3 conversion table: Wa

0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0

CoefficientAvv

Coefficient: Avv

CoefiicientAhv

Coefficient: Ahv

CoefficientAov

Coefficient: Aov

CoefficientAhh

Coefficient: Ahh

CoefficientAvh

Coefficient: Avh

CoefficientAoh

Coefficient: Aoh

CSMTemperature

Brightness temperature of deep space

CoRegistrationParameterA1
CoRegistrationParameterA2

Co-registration parameter: A1
Co-registration parameter: A2

Platinum#3 conversion table: Wb
Platinum#3 conversion table: Wc
Platinum#3 conversion table: Wd

0.000000,0.009100,0.009100,0.009100,0.009900,0.009900,0.008500,0.00
0000
0.000000,6.845000,6.803800,6.803800,4.719500,4.719500,9.835000,44.0
00000
0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0
6G-1.037,10G-1.032,18G-1.025,23G-1.032,36G-1.029,50G-0.000,52G-0.
000,89GA-1.025,89GB-1.029
6G--0.003,10G--0.003,18G--0.003,23G--0.004,36G--0.004,50G-0.000,52
G-0.000,89GA--0.003,89GB--0.004
6G--0.034,10G--0.029,18G--0.022,23G--0.028,36G--0.024,50G-0.000,52
G-0.000,89GA--0.022,89GB--0.024
6G-1.037,10G-1.031,18G-1.025,23G-1.034,36G-1.029,50G-0.000,52G-0.
000,89GA-1.028,89GB-1.031
6G--0.003,10G--0.002,18G--0.003,23G--0.006,36G--0.004,50G-0.000,52
G-0.000,89GA--0.006,89GB--0.006
6G--0.034,10G--0.029,18G--0.022,23G--0.028,36G--0.024,50G-0.000,52
G-0.000,89GA--0.022,89GB--0.024
6GV-2.800, 6GH-2.800, 10GV-2.800, 10GH-2.800, 18GV-2.800,
18GH-2.800, 23GV-2.800, 23GH-2.800, 36GV-2.800, 36GH-2.800,
50GV-0.000, 52GV-0.000, 89GAV-2.800, 89GAH-2.800, 89GBV-2.800,
89GBH-2.800
Blank
Blank

L1S-7

Fix/
Example
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix
Fix

Fix
Fix
Fix

Table 1.2-2 Product Meta Items (4/4)
Items (Attribute Name)

Explanation

CalibrationCurve
Coefficient#1

The radiometric correction coefficient for the
0th order

CalibrationCurve
Coefficient#2

The radiometric correction coefficient for the
1st order

CalibrationCurve
Coefficient#3

The radiometric correction coefficient for the
2nd order

CalibrationCurve
Coefficient#4

The radiometric correction coefficient for the
3rd order

CalibrationCurve
Coefficient#5

The radiometric correction coefficient for the
4th order

Concrete Values or Examples

6GV--0.2099101, 6GH--0.2054645, 10GV--0.0580782, 10GH--0.0103279,
18GV--0.0853578,
18GH--0.0435186,
23GV--0.1288643,
23GH--0.1288643,
36GV--0.0475611,
36GH--0.0536047, Example
50GV-0.0000000,
52GV-0.0000000,
89GAV--0.0278573,
89GAH--0.0447590, 89GBV--0.0273764, 89GBH--0.0316265
6GV-1.0756783, 6GH-1.0740756, 10GV-1.0209393, 10GH-1.0037236,
18GV-1.0307711, 18GH-1.0156885, 23GV-1.0464586, 23GH-1.0464586,
36GV-1.0171470, 36GH-1.0193259, 50GV-0.0000000, 52GV-0.0000000, Example
89GAV-1.0100426,
89GAH-1.0161356,
89GBV-1.0098693,
89GBH-1.0114014
6GV--0.0002537, 6GH--0.0002483, 10GV--0.0000704, 10GH--0.0000125,
18GV--0.0001022,
18GH--0.0000522,
23GV--0.0001556,
23GH--0.0001556,
36GV--0.0000575,
36GH--0.0000648, Example
50GV-0.0000000,
52GV-0.0000000,
89GAV--0.0000334,
89GAH--0.0000537, 89GBV--0.0000329, 89GBH--0.0000379
6GV-0.0000000, 6GH-0.0000000, 10GV-0.0000000, 10GH-0.0000000,
18GV-0.0000000, 18GH-0.0000000, 23GV-0.0000000, 23GH-0.0000000,
Example36GV-0.0000000, 36GH-0.0000000, 50GV-0.0000000, 52GV-0.0000000,
89GV-0.0000000, 89GH-0.0000000
6GV-0.0000000, 6GH-0.0000000, 10GV-0.0000000, 10GH-0.0000000,
18GV-0.0000000, 18GH-0.0000000, 23GV-0.0000000, 23GH-0.0000000,
Example36GV-0.0000000, 36GH-0.0000000, 50GV-0.0000000, 52GV-0.0000000,
89GV-0.0000000, 89GH-0.0000000
RxTemperatureReferenced,SpillOver,CSMInterpolation,
Absolute89GPositioning,NonlinearityCorrection
Example* RxTemperatureReferenced may be changed into HTUCoefficients or
ElectromagneticAnalysis
ver0002
ExampleCalibrationMethod
Calibration method name
HTSCorrectionParameter
VersionSpillOverParameterVersion
CSMInterpolationParameter
VersionAbsolute89Gpositioning
ParameterVersion

Fix/
ExampleParameter version of the HTS correction.
Parameter version of the CSM spill over correction
Parameter version of the CSM interpolation correction

ver0002
ver0001

Parameter version of the correction for absolute ver0001
positions of 89 GHz

L1S-8

ExampleExampleExample

No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

Items
Scan_Time
Position_in_Orbit
Navigation_Data
Attitude_Data
6GHz-V_Observation_Count
6GHz-H_Observation_Count
10.65GHz-V_Observation_Count
10.65GHz-H_Observation_Count
18.7GHz-V_Observation_Count
18.7GHz-H_Observation_Count
23.8GHz-V_Observation_Count
23.8GHz-H_Observation_Count
36.5GHz-V_Observation_Count
36.5GHz-H_Observation_Count
50.3GHz-V_Observation_Count
52.8GHz-V_Observation_Count
89.0GHz-V-A_Observation_Count
89.0GHz-V-B_Observation_Count
89.0GHz-H-A_Observation_Count
89.0GHz-H-B_Observation_Count
6GHz-V_Brightness_Temperature
6GHz-H_Brightness_Temperature
10.65GHz-V_Brightness_Temperature
10.65GHz-H_Brightness_Temperature
18.7GHz-V_Brightness_Temperature
18.7GHz-H_Brightness_Temperature
23.8GHz-V_Brightness_Temperature
23.8GHz-H_Brightness_Temperature

Table 1.2-3 Data Items, Sizes and Scaling Factors (1/2)
Byte
Type
Scaling factor
No. of samples per scan
8
double1.0
18
double
1.0
1
6*4
float
1.0
6
3*4
float
1.0
3
2
signed short int
1.0
243
2
signed short int
1.0
243
2
signed short int
1.0
243
2
signed short int
1.0
243
2
signed short int
1.0
243
2
signed short int
1.0
243
2
signed short int
1.0
243
2
signed short int
1.0
243
2
signed short int
1.0
243
2
signed short int
1.0
243
#1
2
signed short int
1.0
243
#1
2
signed short int
1.0
243
2
signed short int
1.0
486
2
signed short int
1.0
486
2
signed short int
1.0
486
2
signed short int
1.0
486
2
signed short int
0.1
243
2
signed short int
0.1
243
2
signed short int
0.1
243
2
signed short int
0.1
243
2
signed short int
0.1
243
2
signed short int
0.1
243
2
signed short int
0.1
243
2
signed short int
0.1
243#1: 50GHz and 52GHz are filled with 0 for AMSR-E.

L1S-9

Units
sec
m,m/s
deg
Count
Count
Count
Count
Count
Count
Count
Count
Count
Count
Count
Count
Count
Count
Count
Count
K
K
K
K
K
K
K
K

Dimension
nscan
nscan
nscan
nscan
243*nscan
243*nscan
243*nscan
243*nscan
243*nscan
243*nscan
243*nscan
243*nscan
243*nscan
243*nscan
243*nscan
243*nscan
486*nscan
486*nscan
486*nscan
486*nscan
243*nscan
243*nscan
243*nscan
243*nscan
243*nscan
243*nscan
243*nscan
243*nscan

No.
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53

Table 1.2-3 Data Items, Sizes and Scaling Factors (2/2)
Items
Byte
Type
Scale factor No. of samples per scan
36.5GHz-V_Brightness_Temperature2
signed short int
0.1
243
36.5GHz-H_Brightness_Temperature2
signed short int
0.1
243
50.3GHz-V_Brightness_Temperature#12
signed short int
0.1
243
52.8GHz-V_Brightness_Temperature#12
signed short int
0.1
243
89.0GHz-A-V_Brightness_Temperature2
signed short int
0.1
486
89.0GHz-A-H_Brightness_Temperature2
signed short int
0.1
486
89.0GHz-B-V_Brightness_Temperature2
signed short int
0.1
486
89.0GHz-B-H_Brightness_Temperature2
signed short int
0.1
486
Antenna_Temp_Coef(Of+Sl )
4
float
1
32
Rx_Offset/Gain_Count2
unsigned short int
1
32
Latitude for low frequencies
4
float
1
243
Longitude for low frequencies
4
float
1
243
Latitude for 89GHz frequencies
4
float
1
486
Longitude for 89GHz frequencies
4
float
1
486
Sun_Azimuth
2
signed short int
0.1
243
Sun_Elevation2
signed short int
0.1
243
Earth_Incidence#2
1
signed char
0.02
243
Earth_Azimuth
2
signed short int
0.01
243Land/Ocean_Flag_for_ 6_10_18_23_36_50_89A
1
unsigned char
1
243
Observation_Supplement
2
1
27
SPC_Temperature_Count2
unsigned short int
1
20
SPS_Temperature_Count2
unsigned short int
1
32
Data_Quality
4
float
1
128
Pixel_Data_Quality_6_to_52
2
unsigned short int
1
243
2
unsigned short int
1
486
Pixel_Data_Qualiｔy_89#2: The Earth Incidence has also sub-attribute “OFFSET”. This offset is set to 55.0.

L1S-10

Units
K
K
K
K
K
K
K
K
K+K/Cnt
Count
deg
deg
deg
deg
deg
deg
deg
deg
%
Count
Count
-

Dimension
243*nscan
243*nscan
243*nscan
243*nscan
486*nscan
486*nscan
486*nscan
486*nscan
32*nscan
32*nscan
243*nscan*6
243*nscan*6
486*nscan*2
486*nscan*2
243*nscan
243*nscan
243*nscan
243*nscan
243*nscan*7
27*nscan
20*nscan
32*nscan
128*nscan
243*nscan*12
486*nscan*4APixel(0,0)

The 243rd observation point

The second observation point

Scan(242,0)

2 byte

The first observation point

Scan No. 1

Scan No. n(Nominal: 1480~1510)(0,n-1)(242,n-1)

6GHz-V Observation Count(6-H, 10-V/H, 18-V/H, 23-V/H, 36-V/H, 50-V, 52-V have the same structure)(Note: 50GHz-V, 52GHz-V SDSs are filled with -9999)

Pixel

(0,0)

The 486th observation point

The second observation point

Scan(485,0)

2 byte

The first observation point

Scan No. 1

Scan No. n(Nominal: 1480~1510)(0,n-1)(485,n-1)

89GHzA-V Observation Count(89A-H, 89B-V/H have the same structure)

Figure 1.2-2 The Structure of Observation Count

L1S-11

Pixel(0,0)

Scan No. n(Nominal:
1996 2000)(0,n-1)The 243nd observation point

The second observation point

Scan(242,0)

2 byte

The first observation point

Scan No. 1

6GHz-V Brightness Temperature(242,n-1)(6-H, 10-V/H, 18-V/H, 23-V/H, 36-V/H, 50-V, 52-V are the same structure)(Note: 50-V, 52-V SDSs are filled with -9999)

Pixel
(0,0)

Scan No. n(Nominal:
1996 2000)

The 486th observation point

The second observation point

Scan(485,0)

2 byte

The first observation point

Scan No. 1(0,n-1)89GHzA-V Brightness Temperature(485,n-1)(89A-H, 89B-V/H are the same structure)

Figure 1.2-3 Structure of Brightness Temperature

L1S-12

(0,0)
Scan No. 1

X

(5,0)
Y

Z

X'

Y'

Z'

4 byteScan

Scan No. n(Nominal: 1480~1510)(0,n-1)

Navigation Data
(2,0)

(0,0)
Scan No. 1

Roll(5,n-1)

Pitch

Yaw

4 byteScan

Scan No. n(Nominal: 1480~1510)(0,n-1)(2,n-1)
Attitude Data

Figure 1.2-4 The Structure of Navigation Data, Attitude Data

L1S-13

Scan No. 1(0,0)(0,n-1)(31,0)

4 byteScan

Scan No. n(Nominal: 1480~1510)

Antenna Temp Coef (Of+Sl)(31,n-1)(Note: 50GHz-V, 52GHz-V, 89GHzA are filled with -9999)

Figure 1.2-5 The Structure of Antenna Temp Coef.

L1S-14A

89 GHzB-H Slope

89 GHzB-H Offset

89 GHzB-V Slope

89 GHzB-V Offset

89 GHzA-H Slope

89 GHzA-H Offset

89 GHzA-V Slope

89 GHzA-V Offset

52 GHz-V Slope

50 GHz-V Slope
52 GHz-V Offset

50 GHz-V Offset

36 GHz-H Slope

36 GHz-H Offset

36 GHz-V Slope

36 GHz-V Offset

23 GHz-H Slope

23 GHz-H Offset

23 GHz-V Offset
23 GHz-V Slope

18 GHz-H Slope

18 GHz-V Slope
18 GHz-H Offset

18 GHz-V Offset

10 GHz-H Slope

10 GHz-H Offset

10 GHz-V Slope

10 GHz-V Offset

6 GHz-H Slope

6 GHz-H Offset

6 GHz-V Offset
6 GHz-V SlopeScan No. 1(0,0)(0,n-1)(31,0)

4 byteScan

Scan No. n(Nominal: 1480~1510)

Rx Offset/Gain Count(31,n-1)(Note: 50GHz-V, 52GHz-V are filled with 0)

Figure 1.2-6 The Structure of Rx Offset/Gain Count

L1S-1589 GHzB-H Rx Gain

89 GHzB-V Rx Gain
89 GHzB-H Rx Offset

89 GHzB-V Rx Offset

89 GHzA-H Rx Offset
89 GHzA-H Rx Gain

89 GHzA-V Rx Offset
89 GHzA-V Rx Gain

52 GHz-V Rx Offset
52 GHz-V Rx Gain

50 GHz-V Rx Gain

36 GHz-H Rx Gain
50 GHz-V Rx Offset

36 GHz-V Rx Gain
36 GHz-H Rx Offset

23 GHz-H Rx Gain
36 GHz-V Rx Offset

23 GHz-V Rx Gain
23 GHz-H Rx Offset

23 GHz-V Rx Offset

18 GHz-V Rx Gain
18 GHz-H Rx Offset
18 GHz-H Rx Gain

18 GHz-V Rx Offset

10 GHz-H Rx Offset
10 GHz-H Rx Gain

10 GHz-V Rx Gain

6 GHz-H Rx Offset
6 GHz-H Rx Gain
10 GHz-V Rx Offset

6 GHz-V Rx Gain

6 GHz-V Rx Offset

50GHz
36GHz
23GHz
18GHz
10GHz
6GHz

(0,0,5)(242,0,5)

Scan No. 1 (0,0,0)(242,0,0)

4 byteScan(242,n-1,5)

Scan No. n (0,n-1,0)(Nominal: 1480~1510)(242,n-1,0)

Latitude/Longitude for low frequencies(Note: 50GHz SDS are filled with 99.99)

89GHz B
89GHz A

(0,0,1)(485,0,1)

Scan No. 1 (0,0,0)(485,0,0)

4 byteScan(485,n-1,1)
Scan No. n (0,n-1,0)(Nominal: 1480~1510)(485,n-1,0)

Latitude/Longitude for 89GHz frequencies

Figure 1.2-7 The Structure of Latitude of Observation Point, Longitude of Observation Point.

L1S-16A

Pixel(0,0)

The 243rd observation point

The second observation point

Scan(242,0)

2 byte

The first observation point

Scan No. 1

Scan No. n(Nominal: 1480~1510)(0,n-1)Sun Azimuth(242,n-1)

Pixel
(0,0)

The 243rd observation point

The second observation point

Scan(242,0)

2 byte

The first observation point

Scan No. 1

Scan No. n(Nominal: 1480~1510)(0,n-1)Sun Elevation(242,n-1)

Figure 1.2-8 The Structure of Sun Azimuth, Sun Elevation

L1S-17

Pixel(0,0)

The 243rd observation point

The second observation point

Scan(242,0)

1 byte

The first observation point

Scan No. 1

Scan No. n(Nominal: 1480~1510)(0,n-1)

Earth Incidence(242,n-1)

Pixel
(0,0)

The 243rd observation point

The second observation point

Scan(242,0)

2 byte

The first observation point

Scan No. 1

Scan No. n(Nominal: 1480~1510)(0,n-1)

Earth Azimuth(242,n-1)

Figure 1.2-9 The Structure of Earth Incidence, Earth Azimuth

L1S-18

89GHz (0,0,6)
50GHz
36GHz
23GHz
18GHz
10GHz
6GHz
Scan No. 1 (0,0,0)(242,0,6)(242,0,0)

1 byteScan(242,n-1,6)

Scan No. n (0,n-1,0)(Nominal: 1480~1510)(242,n-1,0)

Land/Ocean Flag for 6_10_18_23_36_50_89A(Note: 50GHz-V, 52GHz-V SDS are filled with 0)

Figure 1.2-10 The Structure of Land/Ocean Flag

L1S-19

Scan No. 1(0,0)(0,n-1)(26,0)

2 byteScan

Scan No. n(Nominal: 1480~1510)

Observation Supplement(26,n-1)

Figure 1.2-11 The Structure of Observation Supplement

L1S-20SPS Error Flag #4

SPS Error Flag #2
SPS Error Flag #3

SPS Operation FlagSPS Error Flag #1

RX AGC/MGC Mode #2

SPS Operation Mode
RX AGC/MGC Mode #1

SPS ON/OFF #3
SPS ON/OFF #4

SPS ON/OFF #1
SPS ON/OFF #2

Redundancy Switching Control #1
Redundancy Switching Control #2

SPC Error Flag #4

SPC Error Flag #1
SPC Error Flag #2
SPC Error Flag #3

SPC Operation FlagSPC ON/OFF #1
SPC ON/OFF #2

Tacho Pulse Count #5

Tacho Pulse Count #2
Tacho Pulse Count #3
Tacho Pulse Count #4

Tacho Pulse Count #1

GPSR CountScan No. 1(0,0)(0,n-1)(19,0)

2 byteScan

Scan No. n(Nominal: 1480~1510)

SPC Temperature(19,n-1)

Figure 1.2-12 The Structure of SPC Temperature Count (0-19)

L1S-21

12 bit Platinum Sensor #8 HTS Temperature 8

12 bit Platinum Sensor #7 HTS Temperature 7

12 bit Platinum Sensor #6 HTS Temperature 6

12 bit Platinum Sensor #5 HTS Temperature 5

12 bit Platinum Sensor #4 HTS Temperature 4

12 bit Platinum Sensor #3 HTS Temperature 3

12 bit Platinum Sensor #2 HTS Temperature 2

12 bit Platinum Sensor #1 HTS Temperature 1

10 bit Thermistor #14 Control STR Temperature

10 bit Thermistor #13 Control STR Temperature

10 bit Thermistor #12 Control STR Temperature

10 bit Thermistor #11 Control STR Temperature

10 bit Thermistor #09 ADE Temperature

10 bit Thermistor #08 MWA Bearing Temperature

10 bit Thermistor #07 MWA Wheel Temperature

10 bit Thermistor #05 ADA STATOR Temperature

10 bit Thermistor #04 PDUC Temperature

10 bit Thermistor #03 TCC Temperature

10 bit Thermistor #02 SPC B Temperature

10 bit Thermistor #01 SPC A TemperatureScan No. 1(0,0)(0,n-1)(31,0)

2 byteScan

Scan No. n(Nominal: 1480~1510)

SPS Temperature(31,n-1)

Figure 1.2-13 The Structure of SPS Temperature Count (0-31)

L1S-22

12 bit Platinum Sensor #16 SENS STR 2 Temperature

12 bit Platinum Sensor #15 SENS STR 1 Temperature

12 bit Platinum Sensor #14 FEED 2 Temperature

12 bit Platinum Sensor #13 FEED 1 Temperature

12 bit Platinum Sensor #12 DMP 2 Temperature

12 bit Platinum Sensor #11 OBM 3 Temperature

12 bit Platinum Sensor #10 OBM 2 Temperature

12 bit Platinum Sensor #09 OBM Temperature

12 bit Platinum Sensor #08 89G RX 2 Temperature

12 bit Platinum Sensor #07 89G RX 1 Temperature

12 bit Platinum Sensor #06 DMP1 Temperature

12 bit Platinum Sensor #05 36G RX Temperature

12 bit Platinum Sensor #04 23G RX Temperature

12 bit Platinum Sensor #03 18G RX Temperature

12 bit Platinum Sensor #02 10G RX Temperature

12 bit Platinum Sensor #01 6G RX Temperature

10 bit Thermistor #16 ADA ROT B Temperature

10 bit Thermistor #15 ADA ROT A Temperature

10 bit Thermistor #14 SENS STR 4 Temperature

10 bit Thermistor #13 SENS STR 3 Temperature

10 bit Thermistor #12 89G V LNA 2 Temperature

10 bit Thermistor #11 89G V LNA 1 Temperature

10 bit Thermistor #10 89G H LNA 2 Temperature

10 bit Thermistor #09 89G H LNA 1 Temperature

10 bit Thermistor #08 OBE Temperature

10 bit Thermistor #07 10G LNA Temperature

10 bit Thermistor #06 6G LNA Temperature

10 bit Thermistor #05 DC/DC RX 2 Temperature

10 bit Thermistor #04 DC/DC RX 1 Temperature

10 bit Thermistor #03 TCS Temperature

10 bit Thermistor #02 PUDC Temperature

10 bit Thermistor #01 SPS Temperature256 byte

4 byte64 byte132 byte

40 byteQuality fora ScanCalibration
Data Quality

SPS/SPC Error
Summary

HTS
Temperature

Parity Error
SummarySpace

512 byte
16 byteQuality for a Scan
4 byte16 byte4 byte4 byte4 byte4 byteDirectionofSun

DirectionofMoon

Quality
Information
for a scan

Tacho
Pulse
Count

1 bit

MSB

LSB

No.16, No.15, .....

....,No2, No.1

Quality of Packet 1 to 16 (0: OK, 1: NG)
HTS Temperature Check (0: OK, 1: NG)
GPSR Count Check (0: OK, 1: NG)

Calibration Data Quality
256 byte
16 byte16 byte4 byte4 byte4 byte4 byte6GHz-V
Quality

6GHz-H
Quality

89GHzB-H
Quality

16 byte16 byte

CSM
Mean

Hot
Load
Mean

CSM
Standard
Deviation

Hot
LoadStandard
Deviation

Each Frequency (50GHz-V, 52GHz-V is always 0.0 for AMSR-E)

SPC/SPS Error FlagHTS Temperature
4 byte89GHzB-H[K]

4 byte6GHz-H[K]

SPC/SPSError
Flag

4 byte6GHz-V[K]

64 byte4 byte(50GHz-V, 52GHz-V is always 0.0 for AMSR-E)

Parity Error Summary
64 byte64 byte4 byte4 byteCSM
PrimaryCount

HTS
PrimaryCount

6GHz-V
Error Count

6GHz-H
Error Count

4 byte89GHzB-H
Error Count

64 byteRX
Gain/Offset

132 byte
4 byte(50GHz-V, 52GHz-V is always 0.0 for AMSR-E)

Spare
40 byteSpare

Figure 1.2-14

The Structure of Data Quality

L1S-23

52GHz-V
50GHz-V
36GHz-H
36GHz-V
23GHz-H
23GHz-V
18GHz-H
18GHz-V
10GHz-H
10GHz-V
6GHz-H
6GHz-V
Scan No. 1 (0,0,0)(0,0,11)(242,0,11)(242,0,0)

2 byteScan(242,n-1,11)

Scan No. n (0,n-1,0)(Nominal: 1480~1510)(242,n-1,0)

Pixel Data Quality 6 to 52(Note: 50GHz-V, 52GHz-V SDS are filled with 0)

89GHzB-H
89GHzB-V
89GHzA-H
89GHzA-V(0,0,3)(485,0,3)

Scan No. 1 (0,0,0)(485,0,0)

2 byteScan(485,n-1,3)
Scan No. n (0,n-1,0)(Nominal: 1480~1510)(485,n-1,0)

Pixel Data Quality 89

Figure 1.2-15

The Structure of Pixel Data Quality

L1S-24

1.3

Data Size of one AMSR-E Slow Rotation Data

The data size of one AMSR-E Slow Rotation Data is shown in Table 1.3-1 in case of 1500 sequences. However, theactual file size is 8% smaller because HDF is a compressed format.
Table 1.3-1 Estimation of the Data Volume
AMSR-E Level 1S Product Data Size
Item
Scan Time
Position in Orbit
6GHz-V Observation Count
6GHz-H Observation Count
10.65GHz-V Observation Count
10.65GHz-H Observation Count
18.7GHz-V Observation Count
18.7GHz-H Observation Count
23.8GHz-V Observation Count
23.8GHz-H Observation Count
36.5GHz-V Observation Count
36.5GHz-H Observation Count
50.3GHz-V Observation Count
52.8GHz-H Observation Count
89.9GHz-V-A Observation Count
89.9GHz-H -A Observation Count
89.9GHz-V-B Observation Count
89.9GHz-H -B Observation Count
6GHz-V Brigtness T emperature
6GHz-H Brigtness Temperature
10.65GHz-V Brigtness T emperature
10.65GHz-H Brigtness Temperature
18.7GHz-V Brigtness Temperature
18.7GHz-H Brigtness Temperature
23.8GHz-V Brigtness Temperature
23.8GHz-H Brigtness Temperature
36.5GHz-V Brigtness Temperature
36.5GHz-H Brigtness Temperature
50.3GHz-V Brigtness Temperature
52.8GHz-H Brigtness Temperature
89.9GHz-V-A Brigtness Temperature
89.9GHz-H -A Brigtness Tempera ture
89.9GHz-V-B Brigtness Temperature
89.9GHz-H -B Brigtness Temperature
Antenna Temp Coef (Of + Sl)
Rx Offset/G ain Count
Navigation Data
Attitude Data
Latitude for low frequencies
Longitude for low frequencies
Latitude for 89GHz frequencies
Longitude for 89GHz frequencies
Sun Azimuth
Sun Elevation
Earth Incidence
Earth Azimuth
Land/Ocea n Flag
Observation Support
SPC T emperature CountSPS Temperature Count
Data Quality
Pixel Data Quality 6 to 52
Pixel Data Quality 89
Total
Volume/G ranule ( MB )Volume/D ay ( GB )Volume/Month ( GB )N o. ofSamples
1
1
243
243
243
243
243
243
243
243
243
243
243
243
486
486
486
486
243
243
243
243
243
243
243
243
243
243
243
243
486
486
486
486
32
32
6
3
243
243
486
486
243
243
243
243
243
27
20
32
512
243
486

L1S-25

No. of Bytes
8
8
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
4
2
4
4
4
4
4
4
2
2
1
2
1
2
2
2
4
2
2

Semi Total

Remark

8
8
486
486
486
486
486
486
486
486
486
486
486
486
972
972
972
972
486
486
486
486
486
486
486
486
486
486
486
486
972
972
972
972
128
64
24
12
972
972
1944
1944
486 A scan only
486 A scan only
243 A scan only
486 A scan only
1701 1*7 for 6,10,23,37,50,89A
54
40
64
2048
5832 (243*2) * 12 freq
3888 (486*2) * 4 freq
40844
58.4 1500 Scan/Scene
1.7 29 Files/Day
49.6 30 Days/Month

1.4
1.4.1

The Others
File Name Convention

The file name convention of AMSR-E Slow Rotation Data is shown below.

GranuleID + Extensions (.00)

1.4.2

Definition of the AMSR-E Slow Rotation Data Range

The data range of AMSR-E Slow Rotation Data is the half orbit defined as a scene (See Figure 1.4.2-1) andextended about 10 sequences at both ends. The both ends of a half orbit correspond to the maximum and minimum
latitude of the observation point at the center of the sequence.
The highest / lowest latitude sequence

1 Scene10 scans overlap

10 scans overlap
AMSR-E Slow Rotation Data

Figure 1.4.2-1
1.4.3

Definition of One AMSR-E Slow Rotation Data Range

Coordinate System

AMSR-E Slow Rotation Data stores observation position (latitude, longitude) and orbit information of satellite. An
observation position is expressed in Greenwich coordinate system (Earth Fixed Coordinate). The range of the east
longitude is from 0 to 180 degrees and the range of the west longitude is from 0 to -180 degrees. Similarly, the rangeof the north latitude is from 0 to 90 degrees, the range of the south latitude is from 0 to -90 degrees. Earth model of
WGS84 is adopted for geometric calculation. On the other hand, the orbit information is stored as the inertia
coordinate system of J2000.0.
1.4.4

Scaling Factor

In order to make data volume small, scaling factors are applied for some floating number in AMSR-E Slow Rotation
Data. The scale factor is stored with the data unit in the attribute information on Vdata or SDS in AMSR-E Slow
Rotation Data.

L1S-26

2

Data Explanation

This chapter shows explanation of each data item of AMSR-E Slow Rotation Data.
2.1

Core Metadata（1）

ShortName

The abbreviated name of AMSR-E Slow Rotation Data is stored.
AMSREL1S（2）

Level 1S

VersionID“RELEASEx” (x is version ID) is stored as AMSR-E Slow Rotation Data version.

（3）

SizeMBESDataGranule

The size (Mbytes) of AMSR-E Slow Rotation Data is stored.

（4）

LocalGranuleID

The Granule ID for AMSR-E Slow Rotation Data is shown below.
P1AMEYYMMDDPPPMX_KNLL0000000[Scene ID]
P1
P1 (Fixed: EOS-PM1 Aqua)
AME
AME (Fixed: AMSR-E)
YYMMDD
Date of data acquisition start (UT)PPP
Path number at the observation start point (001 – 233)
M
M (M: regular process)X
A or D (Orbit direction, A: Ascending, D: Descending)[Product ID]
K
T( *TBD )N
0 (Fixed: Spare)LL
1S (Fixed: for level 1S)
0000000
0 (Fixed: Spare)（5）

ProcessingLevelID

The processing level is stored. The ID of AMSR-E Slow Rotation Data is shown below.
L1S

（6）

Level 1S

ReprocessingActual

The re-processing date (UT) is stored.

（7）

ProductionDateTime

The production time (UT) is stored.

L1S-27（8）RangeBeginningTime, RangeBeginningDate, RangeEndingTime, RangeEndingDate

The observation start and end time of 89 GHz A-horn’s are stored. The start and end time of the AMSR-E Slow
Rotation Data are the scan beginning time of the southernmost and northernmost point, which does not containextended scans. However, in the case of a short size AMSR-E Slow Rotation Data that does not include a poleregion, the scanning time of each end is stored.

（9）

GringPointLatitude, GringPointLongitude

For AMSR-E Slow Rotation Data, the latitude and longitude of the GringPoints are not calculated since one scan is
not consisted of 16 packets. Blanks are stored.

（10）

PGENameAMSR-E Slow Rotation Data generation software name is stored. The name is shown below.
L1S_Process_Software（11）

Level 1S

PGEVersion

The version number of AMSR-E Slow Rotation Data processing software is stored. The version number consists offour versions shown below, and total is 18 characters.

System version (10 characters) + Level 1 software version (3 characters)+ Algorithm version (3 characters) + System parameters version (2 characters)（12）

InputPointerThe science data file names used for processing are stored.

（13）

ProcessingCenter, ContactOrganizationName

Blanks are stored as the offer organization of the AMSR-E Slow Rotation Data.

（14）

StartOrbitNumber, StopOrbitNumber

The orbit number of the satellite in a start/end position for AMSR-E Slow Rotation Data is stored. The orbit numberof AMSR-E is sequential from the Aqua launch.

（15）

EquatorCrossingLongitude, EquatorCrossingDate, EquatorCrossingTime

The equator crossing longitude, date and time (UT) are stored. However, if the satellite does not pass through anequator (like short AMSR-E Slow Rotation Data by the lack of observation data), it is filled with "*".

（16）

OrbitDirection

The direction (ASCENDING/DESCENDING) of AMSR-E Slow Rotation Data is stored.

L1S-28（17）EphemerisGranulePointerThe orbit data file names used for processing are stored.

（18）

EphemerisType

The type of orbit information used for processing is stored. The abbreviation is shown below.
ELMD

（19）

The definitive ephemeris (when using DEFEPHEM )PlatformShortName, SensorShortName

The abbreviated name of the satellite (platform) and the observation sensor is stored.

（20）

NumberofScans

The number of scans of the observation data in AMSR-E Slow Rotation Data is stored. It contains the additionalscans of each 10 sequences at start/end part as shown in Figure 1.4.2-1.

（21）

NumberofMissingScans

The number of missing scans in AMSR-E Slow Rotation Data is stored. Though one scan of AMSR-E consists of 16
packets, it counts one missing scan even if one packet is lost. (The missing packet position is stored in Data Quality
shown in 2.3)

（22）

ECSDataModel

The fixed value “B.0” is stored as the version of metadata model defined in ECS.

（23）

DiscontinuityVirtualChannelCounter

It represents the status of continuous receiving of inputted Science data's packets, and stored value is shown below.
In case of Science RBD, AMSR-E Slow Rotation Data processing software copies the status flag of ESH (EDOS
Service Header in the science RBD file). And in case of PDS, AMSR-E Slow Rotation Data processing software
sets the result of checking data.
Continuation
Discontinuation
DEAD Encounter

Continuation
Discontinuation (Anomaly)
Encountered DEAD

(RBD / PDS)(RBD only)(RBD/PDS)RBD: It indicates Rate Buffered Data, and 20 bytes data (it is called ESH: EDOS Service Header) are inserted to every
packets. RBD is acquired from NASA to JAXA/EOC online.
PDS: It indicates Production Data Sets, and ESH are removed. PDS stores about 2 hour data and they are delivered fromNASA to JAXA/EOC via media on demand.

L1S-29（24）QALocationPacketDiscontinuity

The packet continuity state of AMSR-E Slow Rotation Data is stored. The continuity state of the packet is the value
shown in the following.

（25）

NumberofPackets

The total packet number of AMSR-E Slow Rotation Data is stored. Since one sequence is 16 packets, the relation
between NumberofPackets and NumberofSequence are shown in below.
NumberofPackets = NumberofSequence * 16 packets（26）

NumberofInputFiles

The number of science data files used for processing is stored. It is corresponding to the number of files stored in
InputPointer.

（27）

NumberofMissingPackets, NumberofGoodPackets

The number of missing packets and the number of normal packets in AMSR-E Slow Rotation Data are stored. The
relation between the total packets number and these attributes are as follows.
NumberofPackets = NumberofMissingPackets + NumberofGoodPackets（28）

ReceivingCondition

Blank is stored.
（29）

EphemerisQA

The quality judged by the checking orbit data and attitude data is stored. The quality inspection result becomes NG,
when either number of following limit check errors exceeds 20 % of the data. And it becomes OK in other cases.

Check the orbit data:

LowerLimit ≦ R ≦ UpperLimitR

X 2 Y2  Z2

Check the attitude data:

LowerLimit ≦ Roll , Pitch, Yaw ≦ UpperLmit（30）

AutomaticQAFlag

The automatic inspections are not carried out for AMSR-E Slow Rotation Data. Blank is stored.

（31）

AutomaticQAFlagExplanation

The automatic inspections are not carried out for AMSR-E Rotation Data. Blank is stored.

L1S-30（32）ScienceQualityFlag, ScienceQualityFlagExplanation

Blank are stored for AMSR-E Slow Rotation Data.

（33）

QAPercentMissingData

The percentage of the missing data in AMSR-E Slow Rotation Data is stored.
* Missing observation data is set to '-9999' in SDS.

（34）

QAPercentOutofBoundsData

The percentage of the limit error to all data is stored. It is judged as error when the antenna temperature andbrightness temperature exceed the limit value.
* For AMSR-E Slow Rotation Data, abnormal brightness temperature is stored as negative value.

（35）

QAPercentParityErrorData

The percentage of a parity error data to all data is stored. It is judged as error whether the parity error flag exists in
the raw observation data (Figure 2.1-2.).
* When the observation data has parity error, -32768 is stored in AMSR-E Slow Rotation Data.
(MSB)
15
P1 P2 E

(LSB)
0

Fix

(12 bit data ： Observation data of 6 GHz)

0

Parity Flag (0 : Normal)
bit 0 ～ 6 : Odd Parity
bit 7 ～ 13 : Odd Parity(MSB)
15
P1 P2 E

(LSB)
0

Fix
1

0

1

(10 bit data ： Observation data except 6 GHz)

Fix

Parity Flag (0 : Normal)
bit 0 ～ 6 : Odd Parity
bit 7 ～ 13 : Odd Parity

Figure 2.1-2 Bit formats of observation data (raw data)（36）

ProcessingQADescription

The error message generated by AMSR-E Slow Rotation Data processing software is stored. "PROC_COMP" isstored when processing software is completed normally.

L1S-31（37）ProcessingQAAttribute

As the quality information of the processed data, the item name corresponding to the following standard of theanomaly judgment is stored.

Items

Anomaly standard

NumberofMissingPackets

In case of the lack of more than one packet

EphemerisQA

In case of NG

QAPercentMissingData

In case of more than 1 %QAPercentOutofBoundsData

In case of more than 1 %QAPercentParityErrorData

In case of more than 1 %L1S-32

2.2(1)

Product Metadata
SatelliteOrbit, Attitude, OrbitSemiMajorAxis, OrbitEccenticity, OrbitArgumentPerigee, OrbitInclination,
OrbitPeriod, RevisitTime

The characteristics of Aqua are stored.

(2)

SatelliteOrbit

Sun-synchronous_sub-recurrent

Altitude707.9 kmOrbitSemiMajorAxis

7085.858 km

OrbitEccentricity

0.00095

OrbitArgumentPerigee

106.480 degrees

OrbitInclination

98.15 degrees

OrbitPeriod

98 minutes

RevisitTime

16 days

AMSRChannel, AMSRBandWidth, AMSRBeamWidth, OffNadir, SpatialResolution(AzXEl)

The characteristics of AMSR-E are stored.

AMSRChannel

Observing channels of AMSR-E are set.

AMSRBandWidth

Bandwidth for each frequency is set.

AMSRBeamWidth

Beam width for each frequency is set.

OffNadirThe off nadir angle of 89 GHz A-horn and 89 GHz B-horn are set.

SpatialResolution(AzXEl)

6G-43.2kmX75.4km ,10G-29.4kmX51.4km ,18G-15.7kmX27.4km ,23G-18.1kmX31.5km ,36G-8.2kmX14.4km ,50.3G- ,52G- ,89GA-3.7kmX6.5km ,89GB-3.5kmX5.9km(3)ScanningPeriod

Scanning period is set.

28.89 sec

SwathWidth

Swath width is set.

1450 kmDynamicRange

Dynamic range is set.

2.7 – 340 K

DataFormatType, HDFFormatVersion

The file format information of AMSR-E Slow Rotation Data is stored.

(4)

DataFormatType

NCSA-HDF

AMSR-E Slow Rotation Data Format TypeHDFFormatVersion

Ver4.2r4

Version number of HDF Format

EllipsoidName, SemiMajorAxisofEarth, FlatteningRatioofEarth

The earth model used in AMSR-E data processing software is stored.

EllipsoidName

The earth ellipsoid name:

WGS84:

SemiMajorAxisofEarth

The semi major axis of the earth

6378.1km

FlatteningRatioofEarth

The flattening ratio of the earth

0.00335

L1S-33(5)SensorAlignment

Alignment values between Aqua body coordinate system and the AMSR-E coordinate system are stored.

(6)

Thermistor

The engineering conversion coefficients for the thermistor and those applicable ranges are stored.
Thermistor Count

Range Wx

Thermistor conversion table applied range.

Thermistor Conversion

Table Wa

Thermistor conversion coefficients Wa.

Thermistor Conversion

Table Wb

Thermistor conversion coefficients Wb.

Thermistor Conversion

Table Wc

Thermistor conversion coefficients Wc.

Thermistor Conversion

Table Wd

Thermistor conversion coefficients Wd.

The formula of conversion from count to engineering value is:EngineeringValue[ K ]  Wai C 2  Wbi  C  Wci  Wdi  273.15(7)C: Counti: Wxi 1 ≦ C ≦ Wxi

Platinum#1

The engineering conversion coefficients for the platinum sensor #1 and those applicable ranges are stored.
Platinum#1 Count

Range Wx

Platinum #1 Table applied range.

Platinum#1Conversion

Table Wa

Platinum #1 conversion coefficients Wa.

Platinum#1Conversion

Table Wb

Platinum #1 conversion coefficients Wb.

Platinum#1Conversion

Table Wc

Platinum #1 conversion coefficients Wc.

Platinum#1Conversion

Table Wd

Platinum #1 conversion coefficients Wd.

The conversion formula is the same as that for thermistor.

(8)

Platinum#2

The engineering conversion coefficients for the platinum sensor #2 and those applicable ranges are stored.
Platinum#2 Count

Range Wx

Platinum #2 Table applied range.

Platinum#2 Conversion

Table Wa

Platinum #2 conversion coefficients Wa.

Platinum#2 Conversion

Table Wb

Platinum #2 conversion coefficients Wb.

Platinum#2 Conversion

Table Wc

Platinum #2 conversion coefficients Wc.

Platinum#2 Conversion

Table Wd

Platinum #2 conversion coefficients Wd.

The conversion formula is the same as that for thermistor.

L1S-34(9)Platinum#3

The engineering conversion coefficients for the platinum sensor #3 and those applicable ranges are stored.
Platinum#3 Count

Range Wx

Platinum #3 Table applied range.

Platinum#3 Conversion

Table Wa

Platinum #3 conversion coefficients Wa

Platinum#3 Conversion

Table Wb

Platinum #3 conversion coefficients Wb

Platinum#3 Conversion

Table Wc

Platinum #3 conversion coefficients Wc

Platinum#3 Conversion

Table Wd

Platinum #3 conversion coefficients Wd

The conversion formula is the same as that for thermistor.

(10)

CoefficientA (CoefficientAvv, CoefficientAhv, CoefficientAov, CoefficientAhh, CoefficientAvh,
CoefficientAoh)

The conversion coefficients in each frequency are stored for the brightness temperature. The coefficients are used
for changing the antenna temperature (Ta) of observation data into the brightness temperature (Tb). Brightness
temperature is computed by the following formula, which is different to polarizations.
Tbv = Avv Tav + Ahv Tah + 2.7 Aov
Tbv: The observation brightness temperature of the vertical polarization.
Tav: The antenna temperature of the vertical polarization.
Tah: The antenna temperature of the horizontal polarization.
Avv: The conversion coefficient of the vertical co-polarization.
Ahv: The conversion coefficient of the vertical cross-polarization.
Aov: The coefficient of the deep space’s brightness temperature of the vertical polarization.
Tbh = Ahh Tah + Avh Tav + 2.7 Aoh
Tbh: The observation brightness temperature of the horizontal polarization.
Tav: The antenna temperature of the vertical polarization.
Tah: The antenna temperature of the horizontal polarization.
Avh: The conversion coefficient of the horizontal cross-polarization.
Ahh: The conversion coefficient of the horizontal co-polarization.
Aoh: The coefficient of the deep space’s brightness temperature of the horizontal polarization.

(11)

CSMTemperature

The antenna temperature of the deep space is stored for each frequency. The stored value is used as a conversion
factor in AMSR-E Slow Rotation Data processing software.

L1S-35(12)CoRegistrationParameterA1, CoRegistrationParameterA2

The AMSR-E Slow Rotation Data is noｔ used the co-registration parameters A1 and A2. Blank is stored.

(13)

CalibrationCurveCoefficient#1, CalibrationCurveCoefficient#2, CalibrationCurveCoefficient#3,
CalibrationCurveCoefficient#4, CalibrationCurveCoefficient#5

The coefficients of radiometric correction are stored for nonlinear calibration of the antenna temperature in eachfrequency. Nonlinear calibration is performed by the following formula.
CalibrationCurveCoefficient#1

C0

The coefficient for 0-th order

CalibrationCurveCoefficient#2

C1

The coefficient for 1st order

CalibrationCurveCoefficient#3

C2

The coefficient for 2nd order

CalibrationCurveCoefficient#4

C3

The coefficient for 3rd order

CalibrationCurveCoefficient#5

C4

The coefficient for 4-th order

Ta = C0 + C1 Ta' + C2 (Ta')2 + C3 (Ta')3 + C4 (Ta')4
Ta : Nonlinear calibrated antenna temperature [K]Ta' : The antenna temperature calculated with antenna temperature coefficients [K]*The calculation of antenna temperature with antenna temperature coefficients is shown at
Antenna_Temperature_Coef (Of+Sl).

(14)

CalibrationMethod

The following every adopted calibration methods are stored. When no methods are adopted, blank is stored.

Target Data
Observation data of hightemperature calibrator (HTS)Calibration Method Name

Explanation

HTUCoefficients
ElectromagneticAnalysis

HTS calibration method is chosen one of three.

RxTemperatureReferenced
This is used for removing the ground radiation

SpillOvereffect on CSM at 6 GHz.

Observation data of low

This is used for removing the moon light effect,

temperature calibrator (CSM)
CSMInterpolation

the interference of radio frequency, and the straylight from the sun on CSM.

Geometric information

Absolute89GPositioning

Antenna temperature

NonlinearityCorrection

L1S-36This is used for geometric correction of 89 GHz.
This is used for the nonlinear calibration of theantenna temperature.

(15)HTSCorrectionParameterVersion

The version of the parameter file used in order to calibrate the temperature of HTS is stored as 4 characters (XXXX).
The kinds of calibration are shown in CalibrationMethod. When this calibration is not performed, it is filled with
"*".

(16)

SpillOverParameterVersion

The version of the parameter file used in order to calibrate the ground radiation mixed into the 6 GHz CSM data isstored as 4 characters (XXXX). When this calibration is not performed, it is filled with "*".

(17)

CSMInterpolationParameterVersion

The version of the parameter file used in order to calibrate the following items for CSM data is stored as 4 characters(XXXX). When this calibration is not performed, it is filled with "*".

(18)

Absolute89GpositioningParameterVersion

The version of the parameter file used in order to correct the 89 GHz position information is stored as 4 characters(XXXX). When the position information is not corrected, it is filled with "*".

L1S-37

2.3

Data Items

In AMSR-E Slow Rotation Mode, the observed range of the surface of the Earth is as follows.
Data of Brightness temperature
Data except Brightness temperature(1)： ±61 degree centered at the direction of the satellite flight： ±75 degree centered at the direction of the satellite flight

Scan_Time

The observation start time of 89GHz A-horn in every scan is stored. This time is a total second (TAI) from 0:00
(UT) on January 1st, 1993.

(2)

Position_in_Orbit

The position in a satellite orbit is stored. The position of a satellite consists of an orbit number and a position fromthe ascending node. This is expressed in the following formula.
Position_in_Orbit = Orbit Number + Satellite Position
Satellite Position = (Scan_Time – Ascending Node Passage Time) / (98.9 * 60)(3)

Navigation_Data

The Cartesian orbit information on a satellite is stored in the inertial coordinate system. Orbit information is the
position and velocity of a satellite corresponding to the observation start time (Scan_Time) of each scan.

(4)

Attitude_Data

The attitude errors (Roll, Pitch, Yaw) are stored as attitude information corresponding to the observation start time
(Scan_Time) of each scan. The coordinate system is a right-hand system that is Roll for the satellite flight direction
and Yaw for the earth center direction.

(5)

6GHz-V_Observation_CountThe observed count value of 6 GHz vertical polarization is stored.

* The following value is stored for the abnormal observation data. This is applied for all frequency and polarization.

(6)

-9999

Value for Lack of data

-32767

Value for out of the range of observations-32768

Value for Parity error.

6GHz-H_Observation_CountThe observed count value of 6 GHz horizontal polarization is stored.

(7)10.65GHz-V_Observation_CountThe observed count value of 10.65 GHz vertical polarization is stored.

L1S-38(8)10.65GHz-H_Observation_CountThe observed count value of 10.65 GHz horizontal polarization is stored.

(9)18.7GHz-V_Observation_CountThe observed count value of 18.7 GHz vertical polarization is stored.
(10)

18.7GHz-H_Observation_CountThe observed count value of 18.7 GHz horizontal polarization is stored.

(11)

23.8GHz-V_Observation_CountThe observed count value of 23.8 GHz vertical polarization is stored.

(12)

23.8GHz-H_Observation_CountThe observed count value of 23.8 GHz horizontal polarization is stored.

(13)

36.5GHz-V_Observation_CountThe observed count value of 36.5 GHz vertical polarization is stored.

(14)

36.5GHz-H_Observation_CountThe observed count value of 36.5 GHz horizontal polarization is stored.

(15)

50.3GHz-V_Observation_Count

Since 50.3 GHz is not observed by AMSR-E, 0 fills it.

(16)

52.8GHz-V_Observation_Count

Since 52.8 GHz is not observed by AMSR-E, 0 fills it.

(17)

89.0GHz-V-A_Observation_CountThe observed count value of 89 GHz A-horn’s vertical polarization is stored.

(18)

89.0GHz-H-A_Observation_CountThe observed count value of 89 GHz A-horn’s horizontal polarization is stored.

(19)89.0GHz-V-B_Observation_CountThe observed count value of 89 GHz B-horn’s vertical polarization is stored.

(20)

89.0GHz-H-B_Observation_CountThe observed count value of 89 GHz B-horn’s horizontal polarization is stored.

L1S-39(21)6GHz-V_Brightness_Temperature

The observed brightness temperature of 6 GHz vertical polarization is stored.

* The following value is stored for the abnormal observation data. This is applied for all frequencies andpolarizations.
Scaling Factor

0.1 (All Frequencies)

Abnormal Values-9999

Value for Lack of data

-32767

Value for out of the range of observations-32768

Value for Parity error

The other minus value

Value for Limit Check error(22)6GHz-H_Brightness_Temperature

The observed brightness temperature of 6 GHz horizontal polarization is stored.

(23)

10.65GHz-V_Brightness_Temperature

The observed brightness temperature of 10.65 GHz vertical polarization is stored.

(24)

10.65GHz-H_Brightness_Temperature

The observed brightness temperature of 10.65 GHz horizontal polarization is stored.

(25)

18.7GHz-V_Brightness_Temperature

The observed brightness temperature of 18.7 GHz vertical polarization is stored.

(26)

18.7GHz-H_Brightness_Temperature

The observed brightness temperature of 18.7 GHz horizontal polarization is stored.

(27)

23.8GHz-V_Brightness_Temperature

The observed brightness temperature of 23.8 GHz vertical polarization is stored.

(28)

23.8GHz-H_Brightness_Temperature

The observed brightness temperature of 23.8 GHz horizontal polarization is stored.

(29)

36.5GHz-V_Brightness_Temperature

The observed brightness temperature of 36.5 GHz vertical polarization is stored.

(30)

36.5GHz-H_Brightness_Temperature

The observed brightness temperature of 36.5 GHz horizontal polarization is stored.

L1S-40(31)50.3GHz-V_Brightness_Temperature

Since 50.3 GHz is not observed by AMSR-E, 0 fills it.

(32)

52.8GHz-V_Brightness_Temperature

Since 52.8 GHz is not observed by AMSR-E, 0 fills it.

(33)

89.0GHz-V-A_Brightness_Temperature

The observed brightness temperature of 89 GHz A-horn’s vertical polarization is stored.

(34)

89.0GHz-H-A_Brightness_Temperature

The observed brightness temperature of 89 GHz A-horn’s horizontal polarization is stored.

(35)

89.0GHz-V-B_Brightness_Temperature

The observed brightness temperature of 89 GHz B-horn’s vertical polarization is stored.

(36)

89.0GHz-H-B_Brightness_Temperature

The observed brightness temperature of 89 GHz B-horn’s horizontal polarization is stored.

(37)

Antenna_Temperature_Coef(Of + Sl)

The antenna temperature conversion coefficients and polarization are stored for each frequency. The antenna
temperature coefficients contain offset-value and slope-value, and these coefficients are used for converting theobserved count value into antenna temperature.
Ta p,l = Csl p,l * Obs p,l + Cof p,l

(38)

Ta

: the antenna temperature [K]Obs: the count value of observation data

Aof

: the antenna temperature conversion coefficient (offset-value)Asl: the antenna temperature conversion coefficient (slope-value)

Rx_Offset/Gain_CountThe gain and offset value for a receiver (RX) of each frequency are stored in every scan.

(39)

Latitude for low frequencies

A

The latitude of the observation point on the earth surface at 6 to 50 GHz is stored for each frequency.
The statistics of the latitude for low frequencies are stored in order of 6GHz, 10GHz, 18GHz, 23GHz, 36GHz,
50GHz.

L1S-41

Data Range

North: 0 to 90 degrees / South: 0 to -90 degrees

Scaling Factor

1.0

Abnormal value

99.99 degrees

Out of the range of observations-99.99 degrees* Since 50 GHz is not observed by AMSR-E, it is filled with 99.99.

(40)

Longitude for low frequencies

The longitude of the observation point on the earth surface at 6 to 50 GHz is stored for each frequency.
The statistics of the longitude for low frequencies are stored in order of 6GHz, 10GHz, 18GHz, 23GHz, 36GHz,
50GHz.

Data Range-180 to 180 degrees

Scaling Factor

1.0

Abnormal value

222.22 degrees

Out of the range of observations-222.22 degrees* Since 50 GHz is not observed by AMSR-E, it is filled with 222.22.

(41)

Latitude for 89GHz frequencies

The latitude of the observation point on the earth surface at 89GHz is stored. The data range, scaling factor,
abnormal value, and out of the range of observations are the same as except 89 GHz.

(42)

Longitude for 89GHz frequencies

The longitude to the observation point on the earth surface at 89GHz is stored. The data range, scaling factor,
abnormal value, and out of the range of observations are the same as except 89 GHz.

(43)

Sun_Azimuth

The sun azimuth angle on odd observation points (origin 1) of 89 GHz A-horn is stored. (See Figure 2.3-1.)
Data Range-180 degree to 180 degrees

Scaling Factor

0.1

Abnormal Value-32768In the case of observation point error.
In the case of setting value is less than –180 degrees.

32767

In the case of setting value is more than 180 degrees.

-32767In the case of outside a range of observations.

L1S-42A

(44)Sun_Elevation

The sun elevation angle on odd observation points (origin 1) of 89 GHz A-horn is stored. (See Figure 2.3-1.)
Data Range-180 degree to 180 degrees

Scaling Factor

0.1

Abnormal Value-32768In the case of observation point error.
In the case of setting value is below –180 degrees.

32767

In the case of setting value is over 180 degrees.

-32767In the case of outside a range of observations.
Perpendicular Vector
From the Surface (P)Sun Direction

AMSR-E Viewing Vector (V)Specular reflected
Vectorθ2
θ1

Surface

Observation Pointφ

V×P

Sun Elevation = θ2 - θ1
Sun Azimuth = φ(if sun is V×P positive side
negative side

Figure 2.3-1 definition of Sun Elevation, Azimuth

L1S-43

:+
:-)

(45)

Earth_Incidence

The earth incident angle on odd observation points (origin 1) of 89 GHz A-horn is stored. (See Figure 2.3-2.)
It is the angle between the perpendicular vector of the earth surface and the viewing vector of AMSR-E defined by
Figure 2.3-2.

Data Range

52.4 degrees to 57.54 degrees

Scaling factor

0.02

Offset Value

55.0 degrees

Abnormal Value-128

In the case of observation point error.
In the case of setting value is less than –127.

(46)

127

In the case of the sun elevation exceeds 180 degrees.

-127

In the case of outside a range of observations.

Earth_Azimuth

The earth azimuth angle on odd observation points (origin 1) of 89 GHz A-horn is stored. (See Figure 2.3-2.)
It is the angle between the north oriented vector on the observation point and the inversed projected viewing vector
defined by Figure 2.3-2.

Data Range-180.0 degrees to 180.0 degrees

Scaling Factor

0.01

Abnormal Value-32768In the case of observation point error.
In the case of setting value is below -180 degrees.

32767

In the case of setting value is over 180 degrees.

-32767In the case of outside a range of observations.

Earth Azimuth
Earth Incidence

North

North Vectorφ

AMSR-E Viewing
VectorAMSR-E (Aqua)

θ
North Vector

Observation
Point

0

-180 +180
Sign of Earth Azumuth ( θ )Inversed Projected Vector of
AMSR-E Viewing Vector

Perpendicular
VectorFigure 2.3-2 definition of Earth Azimuth and Incidence

L1S-44

Earth Surface

(47)Land/Ocean_Flag_6_10_18_23_36_50_89A

The land coverage percentage of the observation footprint of AMSR-E is stored for each frequency.
* The 89 GHz land/ocean flag is stored for only odd points of A-horn (origin 1).
* Since 50 GHz and 52-GHz are not observed by AMSR-E, they are filled with 0.
*The part outside a range of observations is filled 222.

(48)

Observation_Supplement

Observation supplement raw data such as an H/W state is stored for each scan. (See Figure 1.2-11.)(49)

SPC_Temperature_CountThe temperature of SPC (Signal Processor Control unit) in each scan is stored with the value of 10 bits and 12 bits ofraw data acquired from the satellite. (See Figure 2.3-3 and Figure 1.2-12.)
(LSB)
0

(MSB)
15

(10 bit data)― ― ― ― ― ―Not used
(LSB)
0

(MSB)
15

(12 bit data)― ― ― ―

Not used

Figure 2.3-3(50)

The Data Structure of SPC Temperature CountSPS_Temperature_CountThe temperature of SPS (Signal Processor Sensor unit) in each scan is stored with the value of 10 bits and 12 bits ofraw data acquired from the satellite. (See Figure 2.3-4 and Figure 1.2-13.)
Fix

(MSB)
15
P1 P2 E

0

0

(LSB)
0
(10 bit data)

0

Parity Flag (0 : Normal)
bit 0 ～ 6 : Odd Parity
bit 7 ～ 13 : Odd Parity(MSB)
15
P1 P2 E

(LSB)
0

Fix

(12 bit data)

0

Parity Flag (0 : Normal)
bit 0 ～ 6 : Odd Parity
bit 7 ～ 13 : Odd Parity

Figure 2.3-4

The Data Structure of SPS Temperature Count

L1S-45A

(51)Data_Quality

The quality information and supplementary information are stored. These correspond to observation data andcalculation result in each sequence. The stored information is shown below.

1） The Sun Direction Angle from CSM. (Direction of Sun) [type: float]
The angle [degree] between the viewing vector of CSM and the direction of the sun is stored. (See Figure
2.3-5)
2） The Moon Direction Angle from CSM. (Direction of Moon) [type: float]
The angle [degree] between the viewing vector of CSM and the direction of the moon is stored. (SeeFigure 2.3-5)

AMSR-E
Sun

HTS

CSM

Sun Direction Angle

Moon Direction Angle

CSM Viewing Vector

Deep Space
Radiation from Deep Space(2.7 K)

Moon

Figure 2.3-5 definition of the Moon Direction Angle and the Sun Direction Angle

L1S-46

3） The quality of a sequence. (Quality Information of a Sequence)
Flag information for each bit of 32-bits is stored. This flag is set to 0 for normal case, and 1 for error case.
The setting of each bit is shown sequentially from LSB (Least Significant Bit).
a) The result of GPSR counts check.

(1 bit)When the difference of the GPSR counts in about 1 scan is outside of the range 1.5±1.0 (sec) or -6.5±1.0(sec) in engineering value, an error value (1) is set.
b) The result of HTS temperature check.

(1 bit)When the difference of the HTS temperature is more than 0.5 K in engineering value, an error value (1) isset.
c) The condition for each packet.

(16 bits)

When there are lacks of packets or the code of "DEAD", which shows the hexadecimal code for the lackpacket filled by NASA EDOS, an error value (1) is set. The quality for each 16 packets is set from the 3rd bit
LSB to MSB (Most Significant Bit).

4） Tacho Pulse Count (Tacho Pulse Count) [type: float]
The angle [degree] of averaged tacho pulse counts is stored.

5） Quality of the calibration data (Calibration Data Quality)
As quality of the calibration source, the statistics of the CSM and HTS are stored in order of, 6G-V, 6G-H,
10G-V, 10G-H, 18G-V, 18G-H, 23G-V, 23G-H, 36G-V, 36G-H, 50G-V, 52G-V, 89GA-V, 89GA-H,
89GB-V, and 89GB-H. Detailed statistical information is shown below.
* Since 50 G-V and 52-G-V are not observed by AMSR-E, they are filled with 0.
a) The average value of CSM count.

(4 byte s) [type: float]b) The average value of HTS count.

(4 byte s) [type: float]c) The standard deviation of CSM count is not compute; they are filled with -9999. (4 byte s) [type: float]d) The standard deviation of HTS count is not compute; they are filled with -9999. (4 byte s) [type: float]6） SPC, SPS Error Flag(SPC/SPS Error Flag) [type: bit]
The check result of the error flag for SPC and SPS that affects observation data is stored. The stored value isshown below.
0: Normal case
1: SPC anomaly case
2: SPS anomaly case
3: Both SPC and SPS anomaly case

L1S-47

7） HTS temperature (HTS Temperature) [type: float]
The HTS temperature ([K]) is stored for each frequency. The stored temperature is the value used for
calculation of the coefficients for the antenna temperature conversion. The storing order of each frequency is
the same as above 5).

8） Parity Error Summary (Parity Error Summary)
The sum of the following parity error is stored for each sequence.

a) The sum of parity error for RX Offset/Gain of all frequency. [type: float]b) The sum of parity error for CSM count for each frequency. [type: float](Storing order is the same as above 5).)c) The sum of parity error for HTS count for each frequency. [type: float](Storing order is the same as above 5).)9） Spare
It is filled with 0.

L1S-48(52)Pixel Data Quality 6_to_52

Pixel Data Quality of Brightness Temperature, CSM and HTS are stored for each frequency except 89GHz. (Shownin Figure 2.3-6.) Each flag corresponded to the correction items shown below.

- The value expresses each type. (Information of observational range and Brightness Temperature, CSM and HTS
correction)- Correction Brightness Temperature data. (The scan bias)- Correction CSM data. (Spill over, the contamination of the moon reflection and the stray light)- Correction HTS data. (The stray light)
2byte
4bit

4bit

4bit

4bit

Observational
range

Brightness
Temperature
Correction

CSM
Correction

HTS
Correction

Spare

0: None, 1: Correction for the stray light

0: None, 1: Correction for the stray light
0: None, 1: Correction for the moonlight effect
0: None, 1: Correction for the spill over
Spare

Spare

0: None, 1: Correction for the scan bias

0: None, 1: HTS Correction
0: None, 1: CSM Correction
0: None, 1: Brightness Temperature Correction
0: In the range of observations, 1: Out of the range of observations

Figure 2.3-6 Format of Pixel Data Quality(53)

Pixel Data Quality 89

Pixel Data Quality of Brightness Temperature, CSM and HTS are stored for 89GHz. (Shown in Figure 2.3-6.)

L1S-49