A REMOTE SENSING STUDY OF THE URBAN THERMAL EFFECT ON ZHANGYE AND ITS SURROUNDING OASIS AREA

doi:10.6046/gtzyyg.2003.04.05

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Abstract Landsat TMdata have been widely utilized in resource and environment studies. Nevertheless, reports on researches combining thermal infrared band (TM6) with the other TMbands data for investigating various land surface processes remain limited in literature. In this paper, an algorithm was proposed and tested for a target area in Zhangye and its surrounding oasis areas. This study combines the TM6 for deriving planetary brightness temperature (PBT) and land surface temperature (LST) by using mono-window algorithm with the other TMbands data so as to provide several essential parameters required by the mono-window algorithm. In this algorithm, TM1-5 and 7 were atmospherically corrected by means of Gilabert's method to obtain several important parameters, and then PBTand LSTwere calculated by means of mono-window algorithm using TM6 band. The derived LSTcompared with the field observations of several principal land use/cover categories suggests good applicability of the algorithm. Spatial distribution of LSTand PBTwas analyzed with NDVIdistributions in the target area, and the strong negative correlations between LST, PBTand NDVIsuggest that vegetation is a key factor controlling the spatial pattern of land surface heat flux. All this implies a great potential of thermal and optical remote sensing for urban thermal effect and urbanization studies.

Issue Date: 02 August 2011

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LIU San-chao, ZHANG Wan-chang. A REMOTE SENSING STUDY OF THE URBAN THERMAL EFFECT ON ZHANGYE AND ITS SURROUNDING OASIS AREA[J]. REMOTE SENSING FOR LAND & RESOURCES,2003, 15(4): 17-21.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2003.04.05 OR https://www.gtzyyg.com/EN/Y2003/V15/I4/17

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