CEOP/EOP-1 CAMP Northern South China Sea - Southern Japan Hourly Surface Meteorology, Flux, and Radiation Data Set
1.0 Contact Information
1.1 UCAR/JOSS Contact
Steven F Williams
Data Specialist
UCAR/JOSS
P.O. BOX 3000
Boulder, CO, USA, 80307-3000
Telephone: 303-497-8987
Facsimile: 303-497-8158
E-Mail Address: sfw@ucar.edu
1.2 Northern South China Sea - Southern Japan Contact
Tsing-Chang Chen
Department of Geological and Atmospheric Sciences
3010 Agronomy Hall
Iowa State University
Ames, IA USA, 50010
Phone: (515) 294-9874
Fax: (515) 294-2619
Email: tmchen@iastate.edu
2.0 General Description
This data set contains the Coordinated Enhanced Observing Period (CEOP)
Enhanced Observing Period 1 (EOP-1) CEOP Asian-Australia Monsoon Experiment
(CAMP) Northern South China Sea - Southern Japan Hourly Surface Meteorology,
Flux, and Radiation Data Set. This data set contains hourly data from 25
stations for the CEOP EOP-1 time period (01 July 2001 to 30 September 2001).
The University Corporation for Atmospheric Research/Joint Office for Science
Support (UCAR/JOSS) did not perform quality control processing on this data
set.
3.0 Detailed Data Description
3.1 CAMP Northern South China Sea - Southern Japan Algorithms
3.1.1 Native format data
This data set is also available on-line in hourly native format at
www.joss.ucar.edu/ghp/ceopdm/archive/eop1_data/index.html
under the heading CEOP EOP-1 "Native Format" Reference Site Data Sets,
CAMP. For a document describing the native format data, see the
Documentation provided at the same site.
3.1.2 CEOP/EOP-1 Hourly Surface Meteorology, Flux, and Radiation format data
This CEOP/EOP-1 CAMP N. South China Sea - Southern Japan Hourly Surface
Meteorology, Flux, and Radiation data set was formed by reformatting the
hourly observations from the native format data. The data are in UTC time.
The U and V wind components were computed from wind speed and direction. The
dew point was computed from the temperature and relative humidity (Bolton,
1980). Specific humidity was computed from the surface pressure and
calculated dew point using formulas from Wexler and Wildhack (1963).
More information regarding this site can be found under the CEOP Reference
Site Station Characteristics link on the UCAR/JOSS CEOP Data Management page.
3.2 Station Information
The following is a complete description of the station information provided
with this CEOP CAMP N. South China Sea - Southern Japan data set. The actual
station information is delivered with the data. Table 1 details the
station list parameters. The beginning and ending dates for the period of
coverage are in Universal Time Coordinated (UTC). The Identification Type
field is network dependent and indicates the source of the Identification
field. The Occurrence field is an integer value used to indicate co-located
stations. Note that when a particular parameter is unknown for a station,
either a blank, a question mark, or all 9's will appear in that parameter's
position. For a complete list of Country, State, and County values, refer to
the document in the references (Section 5.0). Possible platform types and
frequency values are listed in Tables 2 and 3, respectively. Note that only
those platform types present in the CEOP EOP-1 data have been listed.
Table 1
Parameter Description
--------- -----------
Identification ID in data
Identification Type Internal ID number type
Latitude Station Latitude
Longitude Station Longitude
Occurrence Station occurrence
Lat/Lon Accuracy Number of digits accuracy
in lat/lon values
Name Expanded station name
Commissioned Flag `(C)' indicates commissioned station,
`(N)' indicates station which is NOT
commissioned
Begin Period of Coverage Beginning date of period of coverage
(YYYYMMDD)
End Period of Coverage End date of period of coverage
(YYYYMMDD)
Country Country in which station is located
State State code
County County code
UTC offset Hour Offset from UTC time
DST switch 'y' indicates station does switch to
Daylight Savings Time (DST). 'n' indicates
station does not switch to DST
Platform type Collection Platform. See Table 2
Reporting Frequency Frequency of data collection
Elevation Station elevation
Fixed/Mobile flag Flag indicating if station has fixed
location. 'f' indicates a fixed station.
'm' indicates a mobile station
Table 2
Platform Type Description
------------- -----------
264 CEOP Reference Site Platform
Table 3
Reporting Frequency
-------------------
hourly
3.3 Detailed Format Description
The CEOP EOP-1 CAMP N. South China Sea - Southern Japan Hourly Surface
Meteorology, Flux, and Radiation Data Set contains 10 metadata parameters and
22 data parameters. The metadata parameters describe the station location and
time at which the data were collected. The time of observation is reported
both in Universal Time Coordinated (UTC) Nominal and UTC actual time. Days
begin at UTC 0100 and end at UTC 0000 the following day. Note that missing
parameter values are indicated by "-999.99". The table below details the
data parameters in each record.
Parameters Units
---------- -----
Date of Observation UTC Nominal
Time of Observation UTC Nominal
Date of Observation UTC Actual
Time of Observation UTC Actual
CSE Identifier Abbreviation of CSE name
Reference Site Identifier Abbreviation of Site name
Station Identifier Reference Site Dependent
Latitude Decimal degrees, South is negative
Longitude Decimal degrees, West is negative
Station Elevation Meters
Station Pressure Hectopascals (mb)
Dry Bulb Temperature Celsius
Dew Point Celsius
Relative Humidity Percent
Specific Humidity g/kg
Wind Speed m/s
Wind Direction Degrees
U Wind Component m/s
V Wind Component m/s
Total Precipitation mm
Snow Depth cm
Sensible Heat Flux W/m2
Latent Heat Flux W/m2
Incoming Shortwave Radiation W/m2
Outgoing Shortwave Radiation W/m2
Incoming Longwave Radiation W/m2
Outgoing Longwave Radiation W/m2
Net Radiation W/m2
Skin Temperature Celsius
CO2 Flux uMoles/m2/s
Incoming PAR uMoles/m2/s
Outgoing PAR uMoles/m2/s
3.4 Data Remarks
This data set contains only the hourly observations for the CEOP EOP-1 time
period. This data set is also available on-line in native format at
http://www.joss.ucar.edu/ghp/ceopdm/ under the link "CEOP EOP-1 Reference
Site Data Sets"
4.0 Quality Control Processing
UCAR/JOSS performed limited gross limit and visual checks on this data set.
No data values have been changed.
5.0 References
Bolton, D., 1980: The computation of equivalent potential temperature.,
Mon. Wea. Rev., 108, pp 1046-1053.
Department of Commerce - National Institute of Standards and Technology
(NIST), 1985: Federal Information Processing Standards Publication
10-3 Countries, Dependencies, & Areas of Special Sovereignty.
Department of Commerce - NIST, Washington, DC.
Wexler, A., and W. A. Wildhack, 1963: Humidity and Moisture.
Vol. 3: Fundamentals and Standards. Reinhold Publ. Corp., 562 pp.