JEM/SMILES L2 Products Guidefor ver 2.1 (007-08-0310)
STRUCTURE OF STANDARD SMILES L2 PRODUCTS

January 10, 2012

JEM/SMILES L2 Products Guide

1. STANDARD LEVEL 2 PRODUCTS OVERVIEW
There are two types of products. One is “L2Product” and another is “L2Product_G_RA”. L2Producthas full information (a priori profiles, averaging kernel.). L2Product_G_RA has minimum. In details
is in Sec. 2 of release notes.

(1)

FILE NAME

The file names are defined as follows.
L2Product:

SMILES_L2_{product_name}_{band_name}_{version_name}_{date}.he5

L2Product_G_RA:SMILES_L2_{product_name}_{version_name}_{date}.he5(2)

A COMBINATION OF PRODUCT_NAME AND BAND_NAME

The combination of a product_name and band_name are as follows.
No.

product_nameband_name

1O3

HCl

CH3CN

HOCl

HNO3BrO

O3

O3-sym-17

O3-asym-18

HCl

HO2

TemperatureO3O3-asym-17

O3-asym-18

HNO3

ClO

BrOA

Temperature
23BC(3) VERSION_NAME
version_name is represented as follows.
xxx-yy-zzzz :xxx

: Level 1 B versionzzzz: Level 2 Algorithm version

yy: Climatological DB version(4) DATE
date is represented as follows.
yyyymmdd : (ex. 20091009)
yyyy: Observation year

dd: Observation day

mm: Observation month1

JEM/SMILES L2 Products Guide

2. PRODUCT FORMAT
1) STRUCTURE OF HDF5-EOS DATA FILES
We show below the format structure of the HDF5*-EOS data file.
No.

Filed

Attributes

1

FileAttribute

File Level Attributes:

2

GeolocationField

Geolocation Field Attributes:

3

Data Field

Data Field Attributes:

・Instrument Name
・Processing Level・Version・Observation day・Band name・Scan number
・L1B file name

・Observation point・Time・Altitude
・Solar Zenith Angle
・Azimuth View
・Ascending/Descending flag
・Data value
・Estimate error
・Status*: HTTP://WWW.HDFGROUP.ORG/2

JEM/SMILES L2 Products Guide2) STRUCTURE OF STANDARD SMILES L2 PRODUCTS● Standard processing data (HDF5-EOS)
Structure of standard processing data is as follows.
<File Attributes>
Explanation

Dimension

Data type

1 L1BID

L1B file name(nTimes)char

2 InstrumentName

Instrument Name (SMILES)-char

3 ProcessLevel

Processing level (L2)-char-char-

char

No.

HDF-EOS5 Name4 StartUTC
5 EndUTC

Start time in this file
(yyyy-mm-ddT00:00:00.000)
End time in this file
(yyyy-mm-ddT23:59:59.000)

6 GranuleMonthMonth (mm)-int

7 GranuleDayDay (dd)-int

8 GranuleDayofYear

Granule Day of Year-int

9 GranuleYear

Year (yyyy)-

int

10 PGEVersion

Processing version(XXX-XX-XXXX)

-

char

11 StartScan

Scan count of first day in this file

-

char

12 EndScan

Scan count of end day in this file

-

char

13 BandNameBand name-char

Explanation

Dimension

Data type Unit

1 Altitude

Calculation Altitude(nLevels)float

2 VerticalCoordinate

vertical coordinate
system name-char<Swath Attributes>
No.

HDF-EOS5 Name

km3

JEM/SMILES L2 Products Guide<Geolocation/Data fields Attributes>: Next information is added to each field item.
No.

HDF-EOS5 Name

Explanation

Dimension

Data type1 MissingValue

Missing value

-

float

2 TitleFiled name-char

3 Units

Unit-

char

4 UniqueFieldDefinition

Filed Definition-char

Explanation

Dimension

Data type Unit(nTimes)

double＊1(nTimes)char-<Geolocation Fields>
No.

HDF-EOS5 Name
1 Time2 TimeUTC*1:

Observation time
(Total second since 1/1/1958)
Observation time UTC
yyyy-mm-dd hh:mm:ss.sss（）

3 Altitude

Representative altitude(nLevel)

float

km

4 Latitude

Observation Latitude(nTimes)float

degrees

5 Longitude

Observation Longitude(nTimes)float

degrees

6 SolarZenithAngle

Solar Zenith Angle(nTimes)float

degrees

7 LocalTime

Local time (hh:mm:ss)(nTimes)char-

8 LineOfSightAngle

Azimuth View

(nTimes)float

degrees

9 AscendingDescending

Ascending/Descending flag(nTimes)

charint-

10 Reserved

Reserved field(nTimes)

int-seconds since 1958-1-1

4

JEM/SMILES L2 Products Guide<Data Fields>
No.

Explanation

Dimension

Data type Unit

1 L2ValueValue(nLevel,nTimes)

float

vmr

2 L2Precisioncalculation error(nLevel,nTimes)

float

vmr

3 MeasurementError*2

Measurement error(nLevel,nTimes)

float

vmr

4 SmoothingError*2

Smoothing Error(nLevel,nTimes)

float

vmr

A priori value(nLevel,nTimes)

float

vmr

A priori error(nLevel,nTimes)

floatvmr

Correlative length of A priori(nTimes)floatkmAveraging Kernel(nLevel,nLevelnTimes)

float

-

Vertical Resolution(nLevel,nTimes)

float

km

(nLevel,nTimes)

float

-

(nLevel,nTimes)

float

hPa

(nLevel,nTimes)

float

K

12 WaterVapor

Using Water Vapor of retrieval (nLevel,nTimes)

float

vmr

13 Baseline0*2

Coefficient of Continuum(nLevel,nTimes)

float

km-1

14 Baseline0Precision*2

Baseline error of coefficient(nLevel,nTimes)

float

km-1

(nLevel,nTimes)

float

Hz-1.km-1(nLevel,nTimes)

float

Hz-1.km-1

2nd coefficient of Continuum(nLevel,nTimes)

float

Hz-2.km-1

Baseline error of
2nd coefficient(nLevel,nTimes)

float

Hz-2.km-1

19 Baseline3*2

3rd coefficient of Continuum(nLevel,nTimes)

float

Hz-3.km-1

20 Baseline3Precision*2

Baseline error of 3rd coeficient (nLevel,nTimes)

float

Hz-3.km-1

21 RadianceResidualMax*2

Max. Radiance Residual(nTimes)float

K

22 RadianceResidualMean*2

Mean Radiance Residual(nTimes)

float

K

RMS Radiance Residual(nTimes)

float

K(nTimes)

floatdegrees(nTimes)float

degrees(nTimes)

int-HDF-EOS5 Name

5 Apriori*2

6 AprioriError*2
7 CorrLength*2

8 AveragingKernel*2

9 VerticalResolution*2
10 InformationValue*2

Information Value

11 Pressure

Using

retrievalRetrieved pressure
Retrieved temperature

12 Temperature*2

15 Baseline1

pressure

primary coefficient ofContinuum
Baseline error ofprimary coefficient.

*2

16 Baseline1Precision*2

17 Baseline2*2
18 Baseline2Precision*2

23 RadianceResidualRMS*2
24 RetrievedViewAngleOffset*2

25 RetrievedViewAngleOffsetError*2
26 NumIterPerform*2

Antenna Elevation Angle
OffsetAntenna Elevation Angle
Offset error
Convergence loop numberand resultof27 MaxNumIteration*2

Max. convergence number(nTimes)

int-

28 Status

Status information*3(nTimes)

int-

Number of observed AOS Unit (nTimes)

int-

30 Convergence

Convergence status(nTimes)

float

-

31 FOVInterference*2

Interference flag *4(nTimes)

int-

29 AOSUnitNum*2*2

5

JEM/SMILES L2 Products GuideExplanation

Dimension

Data type Unit

32 CostfunctionYAll*2

Costfunction of spectra(nTimes)

float

-

33 CostfunctionY*2Costfunction of spectra
for each altitude(nLevel,nTimes)

float-No.

HDF-EOS5 Name

*2:

These fields are included in “L2Product” file only.

*3 Status field:
valueExplanation

0No error status>0

Error status
1

Error flag on FOV interference (see FOVinterference field)

2

Error flag of observation altitude range.

4

Error flag of convergence status*4 FOVInterference field:
value

Explanation-1

No interference information

0No FOV interference>0

Do not use this profile (see the `information').
1

Information: FOV interference by Sun

2Information: FOV interference by Moon4Information: FOV interference by ISS Solar paddle<StructMetadata>No.

HDF-EOS5 Name

1 StructMetadata.0

Explanation
Matrix information of swath data

Dimension1< coremetadata >No.

HDF-EOS5 Name

1 coremetadata.0

Explanation
HDF-EOS information

Dimension
16