Recovering spectral emissivity with ASTER-thermal data from Tenerife Island

Author

Barreto, A. ; Arbelo, M. ; Nuez-Casillas, L. ; Hernandez-Leal, P. ; Gonzalez-Calvo, A. ; Alonso-Benito, A.

Author_Institution

Dept. de Fis., Univ. de La Laguna, La Laguna, Spain

Volume

3

fYear

2009

fDate

12-17 July 2009

Abstract

We validated surface emissivity retrieved by means of temperature and emissivity separation (TES) and normalized emissivity method (NEM) with ASTER data. We selected four days and three different test areas within Tenerife Island, located over 1800 m, and one more in the sea level. This different range in altitude is used to study the atmospheric effect on emissivity retrieved from satellite. Significant differences in spectral emissivity were found for zones catalogued as low contrast surfaces (vegetation, sea surface and Mt. Chahorra volcanic rock), from 0.015 to 0.111, while results obtained for Mt. Blanca volcanic rock are excellent.

Keywords

data acquisition; emissivity; geophysical techniques; radiometry; remote sensing; ASTER-thermal data; Mt. Blanca volcanic rock; Mt. Chahorra volcanic rock; Spain; Tenerife Island; atmospheric effect; brightness temperature; low contrast surface; normalized emissivity method; sea surface; spectral emissivity; surface emissivity retrieval; temperature-emissivity separation; vegetation; Geologic measurements; Information retrieval; Ocean temperature; Remote monitoring; Satellites; Sea level; Sea measurements; Sea surface; Testing; Vegetation; Emissivity; NEM; TES and ASTER;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009

Conference_Location

Cape Town

Print_ISBN

978-1-4244-3394-0

Type

conf

DOI

10.1109/IGARSS.2009.5418016

Filename

5418016