This 30-Minute CEOP dataset contains the flux parameters reported by each CSE/Reference Site/Station Identifier combination for each height at each Date/Time. The CEOP Flux Dataset format contains 9 metadata parameters and 8 data parameters and flags. The metadata parameters describe the station location and time at which the data were collected. The time of observation is reported both in Coordinated Universal Time (UTC) nominal and UTC actual time. The UTC actual time is the time of the actual observation. The minutes portion of the UTC nominal time is always 00 or 30. If the UTC actual time minutes are less than 15 or greater than or equal to 45, then the UTC nominal time minutes would be 00, else the UTC nominal minutes would be 30. The time of observation should be from 00:00 to 23:30 UTC. No times of 24:00 UTC should be reported. All parameters and flags are space separated giving 159 characters in each line (not including the final return character ending each line). Completely missing records should be included. The final CEOP Flux Dataset output file(s) should follow the CEOP Reference Site Data Set File Naming Conventions, and data records should be sorted by UTC Nominal and Actual Date/Time and then by Latitude/Longitude. The table below details the space separated data parameters and associated flags in each record. Continuous meteorological parameters will be averaged over the 30-minutes prior to the reported observation. The flag values are assigned by the Reference Site, according to the CEOP-specified data flags.
The following are sample records of the CEOP Flux Data. Unlike this example, there are no carriage returns in the data. Thirty minutes worth of data are presented in each record. See the table below for an exact format specification.
2001/07/01 01:00 2001/07/01 01:00 LBA Pantanal Pantanal -19.56339 -57.01494 -999.99 10.00 -83.42 U -999.99 M -999.99 M -999.99 M 2001/07/01 01:00 2001/07/01 01:00 LBA Pantanal Pantanal -19.56339 -57.01494 -999.99 -0.02 -999.99 M -999.99 M -999.99 M -9.59 U
| Parameter | C Format | Missing Value | Final Units/Equations/Notes |
|---|---|---|---|
| UTC Nominal Date/Time | 16 chars | N/A | yyyy/mm/dd HH:MM, where MM is 00 or 30, only |
| UTC Actual Date/Time | 16 chars | N/A | yyyy/mm/dd HH:MM |
| CSE Identifier | 10 chars | N/A | Fill name with underscores, not spaces. |
| Reference Site Identifier | 15 chars | N/A | Fill name with underscores, not spaces. |
| Station Identifier | 15 chars | N/A | Fill name with underscores, not spaces. |
| Latitude | f10.5 | -99.99999 | decimal degrees. South is negative. |
| Longitude | f11.5 | -999.99999 | decimal degrees. West is negative. |
| Elevation | f7.2 | -999.99 | meters |
| Sensor Height | f7.2 | -999.99 | meters; Height of sensor. Positive above ground level. Negative below ground. |
| Sensible Heat Flux | f8.2 | -999.99 | W/m2 |
| Sensible Heat Flux Flag | 1 char | M | See Flag values. |
| Latent Heat Flux | f8.2 | -999.99 | W/m2 |
| Latent Heat Flux Flag | 1 char | M | See Flag values. |
| CO2 Flux | f8.2 | -999.99 | µmol/m2/s |
| CO2 Flux Flag | 1 char | M | See Flag values. |
| Soil Heat Flux | f8.2 | -999.99 | W/m2; |
| Soil Heat Flux Flag | 1 char | M | See Flag values. |