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Air temperature in high temporal and spatial resolution from a combination of the SEVIRI and MODIS instruments

Zaksek, Klemen und Schroedter-Homscheidt, Marion (2008) Air temperature in high temporal and spatial resolution from a combination of the SEVIRI and MODIS instruments. EUMETSAT Meteorological Satellite Conference, 8.-12.9.2008, Darmstadt, Deutschland.

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Kurzfassung

Some applications e.g. from traffic management or energy meteorology require air temperature at 2 metres height above the ground in a high spatial and temporal resolution, partly even in near-real-time. Thus a parameterization based on boundary layer physical principles, which determines air temperature from remote sensing data (SEVIRI data aboard the MSG and MODIS data aboard Terra and Aqua satellites), was developed. The method consists of two parts. First, a downscaling procedure from the SEVIRI pixel resolution of several kilometres to one kilometre spatial resolution is performed using a regression analysis between the land surface temperature (LST) and normalized differential vegetation index (NDVI) acquired by the MODIS instrument. Secondly, the data as albedo, downwelling surface short- and long-wave fluxes, relief characteristics and NDVI data are used as input parameters in the empirical parameterization that removes the lapse rate between LST and 2 m air temperature. The method was successfully tested for Slovenia, the French region Franche-Comté and southern Germany in May to December 2005 allowing the development of a parameterization valid for central Europe. This parameterisation results in a RMSD of 2.0 K during daytime with a bias of -0.01 K and a correlation coefficient of 0.95. This is a promising result especially considering the high temporal (30 min) and spatial resolution (1000 m) of the results.

Dokumentart:Konferenzbeitrag (Paper)
Titel:Air temperature in high temporal and spatial resolution from a combination of the SEVIRI and MODIS instruments
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Zaksek, Klemenklemen.zaksek@zmaw.de
Schroedter-Homscheidt, Marionmarion.schroedter-homscheidt@dlr.de
Datum:2008
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Seitenbereich:Seiten 1-8
Status:veröffentlicht
Stichwörter:air temperature, meteosat second generation, land surface temperature
Veranstaltungstitel:EUMETSAT Meteorological Satellite Conference
Veranstaltungsort:Darmstadt, Deutschland
Veranstaltungsart:Konferenz
Veranstaltungsdatum:8.-12.9.2008
Veranstalter :EUMETSAT
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Atmosphären- und Klimaforschung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Deutsches Fernerkundungsdatenzentrum > Klima- und Atmosphärenprodukte
Hinterlegt von: Marion Schroedter-Homscheidt
Hinterlegt am:13 Aug 2009 14:30
Letzte Änderung:13 Aug 2009 14:30

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