Open AccessAPPLICATION OF THE SEBAL MODEL FOR DETERMINING THE NET RADIATION IN THE CARIRI CEARENSE REGION
Author(s) -
Maria Nascimento,
João Alvino Sampaio Silva,
Carlos Wagner Oliveira,
Ana Célia Maia Meireles,
Francisco Luan Fernandes
Publication year - 2018
Publication title -
journal of hyperspectral remote sensing
Language(s) - English
Resource type - Journals
ISSN - 2237-2202
DOI - 10.29150/jhrs.v7.5.p299-305
Subject(s) - albedo (alchemy) , environmental science , vegetation (pathology) , remote sensing , physical geography , atmospheric sciences , geography , geology , medicine , art , pathology , performance art , art history
The urbanization process has contributed directly to the variation of climatic conditions, since this is mainly due to the substitution of vegetation cover for the construction of urban environments. The removal of these areas of vegetation implies changes in their albedo patterns and monochromatic reflectance causing an irregularity in the radiation distribution cycle. Thus, the objective of this work is to determine the balance of radiation in the Cariri Cearense region, by remote sensing using the algorithm SEBAL (Surface Energy Balance Algorithm for Land) and Landsat 5TM images 2616/65 on 07/30/2006, 08/18/2007, 09/21/2008, 09/24/2009, 10/13/2010, 08/29/2011. For a more detailed appreciation of the values of net radiation (Rn), three targets were chosen in the scene, which were: native forest, sparse forest, exposed soil area. All these targets located to windward of the Chapada do Araripe. The Rn estimates showed an increase in dense native forest regions due to the greater vegetative area, in all the images studied. The values for sparse forest and exposed soil were lower.