Derivation of Ground Reflectance and Albedo by Integration of Landsat Themtic Mapper and DEM in Heihe River Basin, Northwestern China

  • 1. International Institute for Earth System Science, Nanjing University, Nanjing, Jiangsu 210093;
    2. College of Geographical Science, Nanjing Normal University, Nanjing, Jiangsu 210097

Received date: 2002-11-12

  Revised date: 2003-02-26

  Online published: 2003-09-20


Traditional atmospheric correction methods are complicated in theory, difficult in practice owning to some parameters, especially field real-time atmospheric profile data, are seldom available.This study presents an easy, fast approach that takes the best use of DEM in association with the application of an atmospheric correction model to obtain the surface reflectance from Landsat TM imaginary over the Heihe River Basin.Based on surface reflectance imaginaries for TM Band 1-5 and 7, different band integration approaches were attempted to obtain the total continuous spectral albedo over the study site for comparing with the field observed ones.It was found that for vegetated area the TM band 2, 4, 7 integration approach performs better, while for non-vegetation area band integration using TM 1-5 and 7 bands data is more reliable.

Cite this article

LIU San-Chao, ZHANG Wan-Chang, JIANG Jian-Jun, ZHAO Deng-Zhong . Derivation of Ground Reflectance and Albedo by Integration of Landsat Themtic Mapper and DEM in Heihe River Basin, Northwestern China[J]. SCIENTIA GEOGRAPHICA SINICA, 2003 , 23(5) : 585 -591 . DOI: 10.13249/j.cnki.sgs.2003.05.585


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