Surface albedo through TM-Landsat 5 images and Digital Terrain Model

Revista Brasileira de Engenharia Agrícola e Ambiental

Giongo, Pedro R.²  Vettorazzi, Carlos A.¹ 

[1] USP, Piracicaba;UEG, Santa Helena de Goias

关键词: river basin;    remote sensing;    reflectivity;    METRIC     IntroduçãoO albedo da superfície é um parâmetro biofísico cuja variação ocorre com o tipo de alvo sobre o qual incide a radiação eletromagnética e variações deste parâmetro são excelentes indicadores de mudanças no cenário de uma bacia hidrográfica (Silva et al;   

DOI  :  10.1590/1807-1929/agriambi.v18n08p833-838

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

This study aimed at to estimate the surface albedo in the Corumbataí River Basin, State of São Paulo, Brazil, using TM-Landsat 5 images, together with the Digital Terrain Model (DTM), in order to take into account the terrain slope, as well as the Mapping Evapotranspiration at High Resolution and with Internalized Calibration (METRIC) model. Available ancillary data from a meteorological station located in the study area, and ten images from 01/02/2009, 04/02/2010, 22/04/2009, 24/05/2009, 12/06/2010, 08/07/2008, 30/07/2010, 31/08/2010, 13/09/2009 and 31/10/2009, were also used. The use of TM-LANDSAT 5 images with the METRIC model and the DTM, allowed to identify the spatial and temporal variations of different coverages on the mapping of surface albedo of the Corumbataí River Basin. The data were consistent with those presented in the literature for sugarcane, water, pasture and eucalypt, for satellite images of clear-sky days.

【 授权许可】

CC BY-NC