Processing and accuracy of Landsat Thematic Mapper data for lake surface temperature measurement
作者:
K. SCHNEIDER,
W. MAUSER,
期刊:
International Journal of Remote Sensing
(Taylor Available online 1996)
卷期:
Volume 17,
issue 11
页码: 2027-2041
ISSN:0143-1161
年代: 1996
DOI:10.1080/01431169608948757
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Processing of Landsat-5 TM thermal images for lake surface temperature determination is addressed. A specific preprocessing algorithm to reduce sensor noise is presented and calibration and atmospheric correction is discussed. The atmospheric impact on thermal radiation measurements is modelled using Lowtran-7 utilizing radiosonde data. Comparing ground truth measurements acquired for 21 images between 1987 and 1994 with satellite derived temperatures yielded a mean square error of 0.53 deg K. A systematic overestimation or underestimation of Landsat derived temperatures was not found. The emissivity effect upon the accuracy of the derived surface temperature is discussed as well as effects of using alternate atmospheric profile data.
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