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Journal of the International Association of Wildland Fire
RESEARCH ARTICLE

Accuracy and spatiotemporal distribution of fire in the Brazilian biomes from the MODIS burned-area products

Nickolas Castro Santana A , Osmar Abílio de Carvalho Júnior A B , Roberto Arnaldo Trancoso Gomes A and Renato Fontes Guimarães A
+ Author Affiliations
- Author Affiliations

A Department of Geography, University of Brasília, Brasília 70910-900, Brazil.

B Corresponding author. Email: osmarjr@unb.br

International Journal of Wildland Fire 29(10) 907-918 https://doi.org/10.1071/WF19044
Submitted: 28 March 2019  Accepted: 2 July 2020   Published: 7 August 2020

Abstract

The Moderate Resolution Imaging Spectroradiometer (MODIS) products are the most used in burned-area monitoring, on regional and global scales. This research aims to evaluate the accuracy of the MODIS burned-area and active-fire products to describe fire patterns in Brazil in the period 2001–2015. The accuracy analysis, in the year 2015, compared the MODIS products (MCD45/MCD64) and the burned areas extracted by the visual interpretation of the LANDSAT/Operational Land Imager (OLI) images from the confusion matrix. The accuracy analysis of the active-fire products (MOD14/MYD14) in the year 2015 used linear regression. We used the most accurate burned-area product (MCD64), in conjunction with environmental variables of land use and climate. The MCD45 product presented a high error of commission (>36.69%) and omission (>77.04%) for the whole country. The MCD64 product had fewer errors of omission (64.05%) compared with the MCD45 product, but increased errors of commission (45.85%). MCD64 data in 2001–2015 showed three fire domains in Brazil determined by the climatic pattern. Savanna and grassy areas in semi-humid zones are the most prone areas to fire, burning an average of 25% of their total area annually, with a fire return interval of 5–6 years.

Additional keywords: Brazil, fire scars, multitemporal data, validation, wildfire.


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