Data Access

CME04 ISFF Netcdf Files

The CME04 5-minute Netcdf files contain means and higher moments from all sensors acquired by NCAR during CME04. Each file contains one day's data from 00:00 to 23:59 GMT. The file names are of the form "cme_YYMMDD.nc", where YYMMDD are the 2 digit year, month and day.

We recommend combining these to obtain more statistically-significant averages over longer time periods.

Status of Dataset

Third QC Release, March 16, 2005

ISFF 5-minute statistics are available for download in NetCDF and ASCII form. All post-processing steps and quality checks described in the CME04 WWW page have been applied, including the fast-response co2 data processing. Slow-response CO2 measurements from Hydra have been processed separately and are available here.

Update from the Feb. 3 release is a bug fix which inadvertently threw out data for the water-vapor fluxes at 2m and all fluxes from 17m and 30m before the kryptons were cleaned the first time.

Updates from Dec. 20 release:

  • Sonic anemometer data (including fluxes) are now in geographic coordinates.
  • Derived values (including sensible and latent heat and corrected net radiation) have been added.
  • Configuration errors with some of the sonic anemometers have been compensated for.
  • Obviously bad sonic anemometer data have been removed.

NetCDF File Directory