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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

An Algorithm for Burned Area Detection in the Brazilian Cerrado Using 4 gm MODIS Imagery

Texto completo
Autor(es):
Libonati, Renata [1] ; DaCamara, Carlos C. [2] ; Setzer, Alberto W. [3] ; Morelli, Fabiano [3] ; Melchiori, Arturo E. [3]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Fed Rio de Janeiro, Dept Meteorol, BR-21941916 Rio De Janeiro - Brazil
[2] Univ Lisbon, Fac Ciencias, Inst Dom Luiz, P-1749016 Lisbon - Portugal
[3] Inst Nacl Pesquisas Espaciais, BR-12227010 Sao Jose Dos Campos - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: REMOTE SENSING; v. 7, n. 11, p. 15782-15803, NOV 2015.
Citações Web of Science: 15
Resumo

The Brazilian Cerrado is significantly affected by anthropic fires every year, which makes the region an important source of pyrogenic emissions. This study aims at generating improved 1 km monthly burned area maps for Cerrado based on remote-sensed information. The algorithm relies on a burn-sensitive vegetation index based on MODIS daily values of near and middle infrared reflectance and makes use of active fire detection from multiple sensors. Validation is performed using reference burned area (BA) maps derived from Landsat imagery. Results are also compared with MODIS standard BA products. A monthly BA database for the Brazilian Cerrado is generated covering the period 2005-2014. Estimated value of BA is 1.3 times larger than the value derived from reference data, making the product suitable for applications in fire emission studies and ecosystem management. As expected the intra and inter-annual variability of estimated BA over the Brazilian Cerrado is in agreement with the regime of precipitation. This work represents the first step towards setting up a regional database of BA for Brazil to be developed in the framework of BrFLAS, an R and D project in the areas of fire emissions and ecosystem management planning. (AU)

Processo FAPESP: 15/01389-4 - Sistema brasileiro Fogo-Superfície-Atmosfera (BrFLAS)
Beneficiário:Alberto Waingort Setzer
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 10/19712-2 - Desenvolvimento de mapas de estimativa de área queimada utilizando dados de satélite
Beneficiário:Renata Libonati dos Santos
Linha de fomento: Bolsas no Brasil - Pós-Doutorado