Journal
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
Volume 18, Issue -, Pages 141-147Publisher
ELSEVIER
DOI: 10.1016/j.jag.2012.01.022
Keywords
Urban classification; Emissivity maps; Spectral library; TES algorithm; DESIREX
Categories
Funding
- European Space Agency [21717/08/I-LG]
- European Union [212921, 036946]
- Ministerio de Ciencia y Tecnologia [AYA2008-0595-C04-01]
- University of Valencia
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In this work a methodology to provide an emissivity map of an urban area is presented. The methodology is applied to the city of Madrid (Spain) using data provided by the Airborne Hyperspectral Scanner (AHS) in 2008. From the data a classification map with twelve different urban materials was created. Each material was then characterized by a different emissivity, whose values were obtained from the application of the TES algorithm to in situ measurements and values extracted from the ASTER spectral library. This new emissivity map could be used as a basis for determining the temperature of the city and to understand the urban heat island effect in terms of spatial distribution and size. (C) 2012 Elsevier B.V. All rights reserved.
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