SGS00 5-min Statistics Netcdf Files
The SGS00 5-minute Netcdf files each contain one day's data from 00:00
to 23:59 GMT. The file names are of the form "sgs.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.
More information on the Netcdf file format is available from
Unidata.
Status of SGS00 5-minute Statistics
- February, 2001
- Sonic wind vectors are now rotated to correct for sonic tilt. Sonic W
axis is now normal to plane of mean flow.
- Sonic wind vectors are corrected for sonic azimuths measured in the
field. The rotated
sonic U axis is normal to the two lines of sonics,
so that a positive U wind component is nominally a wind from the NW.
- Sept 25, 2001
- After using the theodolite--measured azimuths to rotate the data to
a common coordinate system, it was found necessary to further correct
the data for inferred offsets in the measurements of the horizontal wind
components by each of the sonic anemometers, which ranged up to 6 cm/sec,
as well as for residual systematic wind direction biases of up to 2 deg.
See logbook entry 120.
ISFF SGS005min Dataset Access
The SGS00 ISFF dataset is publically available.
However, we ask users to provide their name and email address
when they first download data, so that they may be notified of
discovered errors or new releases of the dataset.
If you have provided this information before for this dataset,
leave the fields blank.
© NCAR/Atmospheric Technology Division
This page was prepared by
Gordon Maclean,
NCAR Research Technology Facility