Parameterization of air temperature in high temporal and spatial resolution from a combination of the SEVIRI and MODIS instruments
Zaksek, Klemen and Schroedter-Homscheidt, Marion (2009) Parameterization of air temperature in high temporal and spatial resolution from a combination of the SEVIRI and MODIS instruments. ISPRS Journal of Photogrammetry and Remote Sensing, doi: 10.1016/j.isprsjprs.2009.02.006 (64), pp. 414-421. Elsevier. DOI: doi:10.1016/j.isprsjprs.2009.02.006. ISSN 0924-2716.
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Official URL: http://www.elsevier.com/locate/isprsjprs
Some applications, e.g. from traffic or energy management, require air temperature data in high spatial and temporal resolution at two metres height above the ground (T2m), sometimes in near-real-time. Thus, a parameterization based on boundary layer physical principles was developed that determines the air temperature from remote sensing data (SEVIRI data aboard the MSG and MODIS data aboard Terra and Aqua satellites). The method consists of two parts. First, a downscaling procedure from the SEVIRI pixel resolution of several kilometres to a one kilometre spatial resolution is performed using a regression analysis between the land surface temperature (LST ) and the normalized differential vegetation index (NDVI) acquired by the MODIS instrument. Second, the lapse rate between the LST and T2m is removed using an empirical parameterization that requires albedo, down-welling surface short-wave flux, relief characteristics and NDVI data. The method was successfully tested for Slovenia, the French region Franche-Comté and southern Germany for the period from May to December 2005, indicating that the parameterization is valid for Central Europe. This parameterization results in a root mean square deviation RMSD of 2.0 K during the daytime with a bias of 0.01 K and a correlation coefficient of 0.95. This is promising, especially considering the high temporal (30 min) and spatial resolution (1000 m) of the results.
|Title:||Parameterization of air temperature in high temporal and spatial resolution from a combination of the SEVIRI and MODIS instruments|
|Journal or Publication Title:||ISPRS Journal of Photogrammetry and Remote Sensing|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 414-421|
|Keywords:||Air temperature Land surface temperature SEVIRI MODIS|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W EO - Erdbeobachtung|
|DLR - Research area:||Space|
|DLR - Program:||W EO - Erdbeobachtung|
|DLR - Research theme (Project):||W - Vorhaben Atmosphären- und Klimaforschung|
|Institutes and Institutions:||German Remote Sensing Data Center > Climate and Atmospheric Products|
|Deposited By:||Marion Schroedter-Homscheidt|
|Deposited On:||10 Aug 2009 08:44|
|Last Modified:||25 Apr 2013 10:51|
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