Data Gridding
There are two separate issues for gridding the satellite data:
- Gridding data for general comparison with model output.
- Gridding data for use in particular case studies.
No decision was made regarding the gridding of data for particular case studies where a greater temporal resolution (where available) may be required. To aid with this in the future the following table may prove useful.
| Instrument | Wavelength (um) | Operational Period | Repeat Cycle | Height Resolution
|
|---|
| SAGE I | 0.450, 1.000 | Three years from Feb 1979 | 40 days | 1 km
| | SAGE II | 0.385, 0.453, 0.525, 1.019 | Launched October 1984 | 40 days | 1 km
| | CLAES | 12.82 | 1st October 1991 to 5th May 1993 | 1 day | 3 km
| | HALOE | 2.45, 3.40, 3.46, 5.26 | October 1991 to present | 40 days | 3 km
| | ISAMS | 4.51, 5.28, 6.23, 6.76, 7.43, 7.81, 8.09, 10.0, 11.4, 12.1, 16.3 | Sept 12 1991 to July 29 1992 | 16 days | 3 km
|
For general comparisons the data are gridded as follows:
- The range of heights will be from as low as possible (approx 6 km) up to as high as is available with the best possible vertical resolution for the instrument (see column five in above table).
- 28 day period means.
- Horizontal resolution of 6 degrees latitude and 24 degrees longitude.
Steven Marsh
Last modified: Thu Jul 3 14:55:20 BST 2003
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