NDLI: Improvement of the thermal emissivity calculated with the vegetation cover method by using optical atmospherically corrected images

Content Provider	IEEE Xplore Digital Library
Author	Martinez, L. Pala, V. Arbiol, R. Caselles, V. Valor, E.
Copyright Year	2007
Description	Author affiliation: Area de teledeteccio i proces d'imatge Inst. Cartografic de Catalunya (ICC), Barcelona (Martinez, L.; Pala, V.; Arbiol, R.)
Abstract	In this paper we assess the influence caused by the lack of atmospheric correction of the optical images used to calculate land surface emissivity (LSE). When thermal emissivity is determined by the Vegetation Cover Method (VCM), information from the solar spectrum in order to calculate the vegetation cover fraction is required. The atmospheric correction is performed in this research by using the combination of the Dark Dense Vegetation method (DDV) and the Second Simulation of the Satellite Signal in the Solar Spectrum (6S) code. The methodology was applied to a Landsat TM image of Tomelloso, Spain. It was determined that the emissivity between 10 and 12 mum only increases 0.4% (which represents a systematic error of approximately +0.2 K in temperature) when atmospherically corrected reflectances are used in relation to non-corrected scenes.
Starting Page	2881
Ending Page	2884
File Size	1012845
Page Count	4
File Format	PDF
ISBN	9781424412112
DOI	10.1109/IGARSS.2007.4423445
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-07-23
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vegetation mapping Optical sensors Satellites Remote sensing Atmospheric measurements Land surface Atmospheric modeling Temperature sensors Land surface temperature Thermal variables measurement Landsat TM optical atmospheric correction thermal emissivity Vegetation Cover Method 6S Dark Dense Vegetation method
Content Type	Text
Resource Type	Article

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