Title :
Intercomparison of active microwave derived surface status and MODIS land surface temperature at high latitudes
Author :
Paulik, C. ; Bartsch, A. ; Sabel, D. ; Wagner, W. ; Duguay, C. ; Soliman, A.
Author_Institution :
Inst. of Photogrammetry & Remote Sensing, Vienna Univ. of Technol., Vienna, Austria
Abstract :
Knowledge about the freeze/thaw state of the surface is of major importance for climate modelling, hydrology and numerous other applications. In this study, a freeze/thaw state detection algorithm using the ASCAT scatterometer is compared to Land Surface Temperature (LST) from MODIS as well as to a product derived from ENVISAT ASAR data. Good agreement with the LST product was found over the study area in Northern Siberia with disagreement below 22% for all 8-day periods of 2007. SAR derived surface status can, if sufficient sampling is available, provide similar results as with ASCAT but even with higher spatial detail.
Keywords :
freezing; hydrological techniques; land surface temperature; melting; synthetic aperture radar; ASCAT scatterometer; ENVISAT ASAR data; LST product; MODIS land surface temperature; Northern Siberia; SAR derived surface status; active microwave derived surface status; climate modelling; freeze state detection algorithm; hydrology; thaw state detection algorithm; Land surface; Land surface temperature; MODIS; Radar measurements; Remote sensing; Temperature measurement; Temperature sensors; arctic; hydrology; land surface temperature; radar remote sensing;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6350444
