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Long Term Validation of Land Surface Temperature Retrieved from MSG/SEVIRI with Continuous in-Situ Measurements in Africa

Göttsche, Frank-M.; Olesen, Folke-S.; Trigo, Isabel F.; Bork-Unkelbach, Annika; Martin, Maria A.

Abstract (englisch):
Since 2005, the Land Surface Analysis Satellite Application Facility (LSA SAF) operationally retrieves Land Surface Temperature (LST) for the Spinning Enhanced Visible and Infrared Imager (SEVIRI) on board Meteosat Second Generation (MSG). The high temporal resolution of the Meteosat satellites and their long term availability since 1977 make their data highly valuable for climate studies. In order to ensure that the LSA SAF LST product continuously meets its target accuracy of 2 °C, it is validated with in-situ measurements from four dedicated LST validation stations. Three stations are located in highly homogenous areas in Africa (semiarid bush, desert, and Kalahari semi-desert) and typically provide thousands of monthly match-ups with LSA SAF LST, which are used to perform seasonally resolved validations. An uncertainty analysis performed for desert station Gobabeb yielded an estimate of total in-situ LST uncertainty of 0.8 ± 0.12 °C. Ignoring rainy seasons, the results for the period 2009–2014 show that LSA SAF LST consistently meets its target accuracy: the highest mean root-mean-square error (RMSE) for LSA SAF LST over the Afr ... mehr


Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.3390/rs8050410
ISSN: 2072-4292
URN: urn:nbn:de:swb:90-546657
KITopen ID: 1000054665
HGF-Programm 12.01.01; LK 01
Erschienen in Remote sensing
Band 8
Heft 5
Seiten Arcticle no 410
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagworte land surface temperature; in-situ measurements; long-term validation; Meteosat Second Generation; spatial representativeness; uncertainty analysis
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