Significant Improvements in the AATSR Land Surface Temperature Algorithm
Abstract
The operational land surface temperature (LST) algorithm for AATSR data depends on auxiliary data characterizing the land surface and vegetation fraction. These data are to be replaced by new ones with a much better resolution, much more closely matching that from the AATSR orbit grid. The new auxiliary data are introduced and tested for their suitability for the AATSR LST retrieval. The tests imply the comparison between the structures of the maps from AATSR data and from the auxiliary data, and the comparison between the operational and new LST. It is shown that the AATSR geo-location appears to be shifted by 1 pixel forward along-track and 1 pixel to the right across-track with respect to Globcover. Representation of structure and shorelines in the new LST is shown to be much improved. Validation data show an improvement in the new LST for Valencia. Finally, first results of the comparison between the new AATSR LST data and SEVIRI LST are illustrated.
- Publication:
-
ESA Living Planet Symposium
- Pub Date:
- December 2010
- Bibcode:
- 2010ESASP.686E.493Z