CEOP/EOP-1 CAMP Mongolia Hourly Soil Heat Flux, Moisture, and Temperature 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 CAMP Contact Ichirow kaihotsu Department of Natural Environmental Sciences, Sougoukagaku-bu, Hiroshima University 1-7-1 Higashi-hiroshima,Hiroshima,739-8521, Japan Telephone: +81-824-24-6497 Facsimile: +81-824-24-0758 E-mail Address: kaihotu@hiroshima-u.ac.jp 2.0 General Description This data set contains the Coordinated Enhanced Observing Period (CEOP) Enhanced Observing Period 1 (EOP-1) CEOP related Asian Monsoon Experiment (CAMP) Mongolia Hourly Soil Heat Flux, Moisture, and Temperature Data Set. This data set contains hourly soil temperatures and soil moisture values at 3cm, 10cm, 40cm and 100cm depths and hourly soil heat flux values at 5cm depth from the 4 Automated Weather Station (AWS) stations (i.e., BTS, DGS, DRS, MGS) for the CEOP EOP-1 time period (01 July 2001 to 30 September 2001). This data set also includes hourly soil temperatures and soil moisture values at 3cm and 10cm depths from 12 Automatic Station for Soil Hydrology (ASSH) stations (i.e., 101 to 112) 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 Mongolia Algorithms The algorithms used to produce the CAMP Mongolia native format data from the ASSH stations are as follows. The platform is ground. The calibration is standard calibration of the model presented by the probe maker. The theory of measurements for soil moisture is TDR and for soil temperature is platinum resistance thermometer. Spatial coverage is point. The type of data is described in table 3.1.1 below. Table 3.1.1 ASSH Type of Data. =================================================== Parameter/Variable | Range | Units | Source Description | | | -------------------+---------+--------+------------ Soil moisture | 0 - 95 | % | Trime IT -------------------+---------+--------+------------ Soil temperature |-50 - 50 | degC | thermometer ==================================================== The algorithms used to produce the CAMP Mongolia native format data from the AWS stations are as follows. The equipment platform is "ground". The calibration is standard calibration of the model presented by the instrument maker. The theory of measurements is shown in Table 3.1.2 below. The spatial coverage is point measurement. The type of data collected, range, units and source are shown in Table 3.1.3 below. Table 3.1.2 AWS Theory of Measurements Soil temperature: Platinum resistance thermometer Soil moisture: TDR Soil heat flux: Thermocuple Table 3.1.2 AWS Type of Data Parameter/Variable | Range | Units | Source Description | | | -------------------+---------+--------+---------------------------- Soil temperature |-40 - 60 | degC | Pt1000 -------------------+---------+--------+---------------------------- Soil moisture | 0 - 95 | % | Trime IT (IMKO) -------------------+---------+--------+---------------------------- Soil heat flux | - | W/m2 | HEAT FLOW TRANSDUCER HFT-1.1 (REBS) These data sets are also available on-line in hourl native format at http://www.joss.ucar.edu/ghp/ceopdm/ under the link "CEOP EOP-1 Reference Site Data Sets". This CEOP/EOP-1 CAMP Mongolia Hourly Soil Heat Flux, Moisture, and Temperature Data Set hourly data set was formed by extracting top of the hour observations from the 30 minute AWS native format data and by selecting hourly observations from the ASSH native format data. The ASSH data were provided in Mongolian Standard Time in Summer (MSTS) and were converted to UTC time by subtracting 9 hours from the local standard time. The AWS data were provided in Mongolian Standard Time in Winter (MSTW) and were converted to UTC time by subtracting 8 hours from the local standard time. More information regarding this site can be found under the "CEOP Reference Site Station Characteristics" link on the UCAR/JOSS CEOP Data Management page at http://www.joss.ucar.edu/ghp/ceopdm/ . 3.2 Station Information The following is a complete description of the station information provided with this CEOP CAMP Mongolia data set. 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. CEOP CAMP Mongolia station information is provided in a separate file along with the data. 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 Mongolia Hourly Soils Data Set contains 11 metadata parameters followed by parameter values for 26 soils depths (i.e., 0,2,3,4,5,6,7,8,10,15,16,20,25,30,32,35,40,45,50, 60,64,85,100,125,150,175 cm). The metadata parameters describe the station location and time at which the data were collected and the record type. The record type describes the type of data found on that record and is described in the Table 4 below. 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 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 Record Type Type of data in current record. See Table 4. Parameter Values Parameter Values for 26 depths. Table 4 Record Type Description ------------- ----------- SoilTemp Soil temperature in Celsius SoilMoist Volumetric soil water content in percent SoilHtFlux Soil heat flux in W/m2 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. 5.0 References 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.