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3 November 2015 Analysis of principal elements of land surface temperature retrieval from AVHRR over Tibetan Plateau
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Abstract
Recently, Tibetan plateau (TP) has become a hot area of climate change research. And Land Surface Temperature (LST) is one of key factors in the research. In order to get a long time-series, high spatial resolution and high accuracy LST dataset, we carried out analysis of influence essential factor of LST retrieval from AVHRR oriented Tibetan plateau area. First, choose MODTRAN5.2 to simulate the impact of land surface, atmospheric, geometric factors on bright temperatures of channel 4 and channel 5 for special features of TP using stand atmospheric models. Result showed that emissivity, boundary temperature, water vapor amount and view zenith angle were the principal elements of bright temperature. Second an improved algorithm from Wanz-Dozier split window model was established considering these factors. At last, differences between LST retrieval result considering different factors were given.
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Qingni Huang, Guangzhen Cao, and Lixin Dong "Analysis of principal elements of land surface temperature retrieval from AVHRR over Tibetan Plateau", Proc. SPIE 9637, Remote Sensing for Agriculture, Ecosystems, and Hydrology XVII, 96371J (3 November 2015); https://doi.org/10.1117/12.2194697
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