SCIAMACHY Throughput Monitoring - Download of Spectral Results
Downloads are available for the following light paths:
Note that the monitoring data presented here have been reprocessed using
actual (Level 1b V6.x upwards) radiometric key data.
All files are in NetCDF
format (and thus more or less self-explanatory). An example IDL routine
to read these data can be downloaded here.
The NetCDF files contain the complete data set for each light path,
i.e. degradation as function of time and pixel number on a daily grid.
Note that the individual files are considerably large (currently about
50 MB each)
and will increase in size when additional days are added.
Updates are synchronised with the update of the corresponding images.
Because of their preliminary nature you should be
very careful in using these data to correct SCIAMACHY radiances or
irradiances and especially consider
the following remarks.
Remarks concerning Level 0 gridded monitoring data:
- Level 0 monitoring data have been generated based on
unconsolidated and only partly calibrated data.
Especially, the calibration has not been harmonised with operational
- The data for the different light paths have then been transformed
to a daily grid, using interpolation and/or averaging if required.
Interpolation over missing or bad quality data is performed both in
spectral and temporal direction.
Decontamination periods and times of instrument switch-offs have
been masked out; these periods therefore contain only interpolated data.
This is especially important in the IR channels when only few
monitoring measurements are available.
- There is no temporal or spectral smoothing performed.
Using the monitoring data as degradation correction may therefore
result in additional differential structures.
- Solar features (like Fraunhofer lines) have not been masked out,
so be careful when using the monitoring factors in combination with
solar activity applications.
- All data have been generated on a pixel basis without reversion
of channel 2. There are no wavelengths provided.
Stefan Noël (email@example.com)