CEOP CAMP Northeast
Thailand Reference Site
1. IDENTIFICATION INFORMATIONName

CEOP CAMP Northeast Thailand Reference Site

Metadata
Identifier

CEOP_CAMP_Northeast_Thailand20230727060818-DIAS20221121113753-en

2. CONTACT
2.1 CONTACT on DATASET
Name

Masatoshi AOKI

Organization

Tokyo University of Agriculture and Technology

Address

3-8-1 Harumi-cho , Fucuu-city, Tokyo, 183-8538 , JapanTEL+81-42-367-5727

FAX+81-42-367-6078

E-mailaoki.mas@cc.tuat.ac.jp

2.2 CONTACT on PROJECT
2.2.1 Data Integration and Analysis SystemName

DIAS OfficeOrganization

Japan Agency for Marine-Earth Science and Technology

Address

3173-25, Showa-Cho, Kanazawa-ku, Yokohama-shi, Kanagawa, 236-0001, Japan

E-maildias-office@diasjp.net

3. DOCUMENT AUTHOR
Name

Masatoshi AOKI

Organization

Tokyo University of Agriculture and Technology

E-mailaoki.mas@cc.tuat.ac.jp

4. DATASET CREATOR
Name

Masatoshi AOKI

Organization

Tokyo University of Agriculture and Technology

E-mailaoki.mas@cc.tuat.ac.jp

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5. DATE OF THIS DOCUMENT
2023-07-27

6. DATE OF DATASET
�creation : 2010-05-06

7. DATASET OVERVIEW
7.1 Abstract
To clarify the energy and water cycle in the Thailand, it is important to understand thecharacteristics of the basic meteorological elements and surface fluxes.
The purpose of PBL-Tower (Planetary Boundary Layer -Tower) observation is to monitor thesemeteorological values and analysis the mechanisms of the energy and water cycle in the Teak Forest
in tropical Monsoon areas.

7.2 Topic Category(ISO19139)
�climatologyMeteorologyAtmosphere

7.3 Temporal Extent
Begin Date

2002-10-01 00:00:00

End Date

2004-12-31 23:59:59

Temporal
Characteristics

Hourly7.4 Geographic Bounding BoxNorthlatitude

bound 14.470000

Westlongitude

bound 102.380000

Eastboundlongitude

102.380000

Southlatitude

bound 14.470000

7.5 Grid
7.6 Geographic Description
7.7 Keywords
7.7.1 Keywords on Dataset

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Keyword Type

Keyword

Keyword
Name

theme

Climate, Water

GEOSS

thesaurus

7.7.2 Keywords on Project
7.7.2.1 Data Integration and Analysis System
Keyword Type

Keyword

KeywordName

thesaurus

theme

DIAS &amp;gt; Data Integration and Analysis System

No_Dictionary

7.8 Online Resource�:
http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/ceop_ap/Northeast_Thailand/
Nakhonrachasima/�file download : https://data.diasjp.net/dl/storages/filelist/dataset:123

7.9 Data Environmental Information
7.10 Distribution Information
nameversion

specification

PRN

no information

CEOP Unified Format

8. DATA PROCESSING
8.1 Data Processing (1)8.1.1 General Explanation of the data producer's knowledge about thelineage of a dataset
Station Pressure is measured using a capacitive absolute pressure sensor, a kind of aneroid typebarometer. When the pressure changes, the silicon diaphragm bend and changes the height of thevacuum gap in the sensor. This changes the capacitance of the sensor, which is measured and converted
into a pressure reading.
Air temperature is measured by using Pt100 resistance thermometer.
Relative humidity is measured by using the thin-film polymer sensor. The thin polymer film either
absorbs or releases water vapor as the relative humidity of the ambient air rises or drops. The
dielectric properties of the polymer film depend on the amount of water contained in it: as therelative humidity changes the dielectric properties of the film change and so the capacitance ofthe sensor changes. The electronics of the instrument measure the capacitance of the sensor andconvert it into a humidity reading.
Wind speed and direction is measured by using Young wind sensor.
Precipitation is measured by tipping bucket rain gauge.

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Incoming Shortwave is measured by using pyranometer. The sensing element consists of a wire-wound
thermopile constructed of electroplated copper on constantan, covered with black paint that has aspectrally flat absorption response. It is protected from environment effects (wind, etc.) using
two concentric glass dome covers. Thermopiles detect the increase in temperature caused by theabsorption of heat from solar radiation.
(Note: As there were noise upward and downward shortwave radiation in the night-time, the data under
5 W/m2 was replaced in the value 0.00 and flagged I. (G is flagged to the original 0 W/m2 data.))Long wave radiation beyond 3 micrometer is measured by using pyradiometer. The principal of sensor
is the same as pyranometer. It uses a specially coated silicon dome that transmits incoming radiation
with wavelength of more than 3 micrometer by cutting off shorter wavelengths.
Skin Temperature is measured by radiation thermometer.
And the Four parameters indicated below were computed by using “CEOP Derived Parameter Equations:
http://www.joss.ucar.edu/ghp/ceopdm/refdata_report/eqns.html”. Also put the data flag “I”,
Dew Point Temperature is computed by using (Bolton 1980):
es = 6.112 * exp((17.67 * T)/(T + 243.5));e = es * (RH/100.0);
Td = log(e/6.112)*243.5/(17.67-log(e/6.112));
where:
T = temperature in deg C;
es = saturation vapor pressure in mb;
e = vapor pressure in mb;
RH = Relative Humidity in percent;
Td = dew point in deg C
Specific Humidity is computed by using (Bolton 1980):
e = 6.112*exp((17.67*Td)/(Td + 243.5));q = (0.622 * e)/(p - (0.378 * e));where:
e = vapor pressure in mb;
Td = dew point in deg C;
p = surface pressure in mb;
q = specific humidity in kg/kg.

U, V Components were computed by using (GEMPAK):
U = -sin (direction) * wind_speed;
V = -cos (direction) * wind_speed;4NET radiation (GEMPAK):
NET_radiation = down (in) short + down (in) long - up (out) short - up (out) long;

8.1.2 Data Source
Data Source Citation Name

Description of derived parameters and processing
techniques used

9. DATA REMARKS
For all parameters, the data has been visually checked, looking for extremely and unusual low/highvalues and/or periods with constant values thorough the CAMP Quality Control Web Interface.
The quality control flags follow the CEOP data flag definition document.

10. DATA POLICY
10.1 Data Policy by the Data Provider
1. No financial implications are involved for the CEOP reference site data exchange.
2. Commercial use and exploitation of CEOP reference site data is prohibited.
3. Any re-export or transfer of the original data received from the CDA archive to a third partyis prohibited.
4. The origin of CEOP reference site data being used for publication of scientific results mustbe acknowledged and referenced in the publication.
5. CEOP reference site data users are strongly encouraged to establish direct contact with data
providers for complete interpretation and analysis of data for publication purposes.
6. Co-authorship of data users and CEOP reference site Principle Investigators on papers making
extensive use of CEOP data is justifiable and highly recommended.
see http://www.eol.ucar.edu/projects/ceop/dm/documents/ceop_policy.html

10.2 Data Policy by the Project
10.2.1 Data Integration and Analysis System
If data provider does not have data policy, DIAS Terms of Service (https://diasjp.net/en/terms/)
and DIAS Privacy Policy (https://diasjp.net/en/privacy/) apply.
If there is a conflict between DIAS Terms of Service and data provider's policy, the data provider'spolicy shall prevail.

11. LICENSE
12. DATA SOURCE ACKNOWLEDGEMENT
512.1 Acknowledge the Data Provider
A minimum requirement is to reference CEOP as:
The in-situ data is provided under the framework of the "Coordinated Energy and Water Cycle
Observations Project (CEOP)."for the Coordinated Energy and Water Cycle Observations Project data (2005), and as:
The satellite data is provided under the framework of the "Coordinated Enhanced Observing Period(CEOP)."for the Coordinated Enhanced Observing Period data (2001 - 2004).

12.2 Acknowledge the Project
12.2.1 Data Integration and Analysis System
If you plan to use this dataset for a conference presentation, paper, journal article, or reportetc., please include acknowledgments referred to following examples. If the data provider describes
examples of acknowledgments, include them as well.
" In this study, [Name of Dataset] provided by [Name of Data Provider] was utilized. This dataset
was also collected and provided under the Data Integration and Analysis System (DIAS), which wasdeveloped and operated by a project supported by the Ministry of Education, Culture, Sports, Scienceand Technology. "13. REFERENCES

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