Avaliação da precipitação estimada por sensor orbital no Pantanal Mato-Grossense
DOI:
https://doi.org/10.26848/rbgf.v14.5.p2700-2710Keywords:
Processamento de imagens, Satélites, Índices de vegetaçãoAbstract
Neste trabalho foi realizada uma análise comparativa entre dados de precipitação observados e dados de precipitação estimados pelo satélite TRMM, com o objetivo de avaliar a eficiência da precipitação estimada pelo sensor orbital em três sítios experimentais do bioma Pantanal mato-grossense localizadas próximas à Reserva Particular do Patrimônio Natural (RPPN) Sesc Pantanal, no município de Barão de Melgaço, considerada a maior reserva particular natural do Brasil, distante 160 km de Cuiabá, MT. Foram utilizados para o desenvolvimento do projeto, dados de precipitação de torres meteorológicas (pluviômetro) e o sensor orbital Tropical Rainfall Measuring Mission (TRMM) produto 3B43. A avaliação dos dados foi realizada por meio de alguns indicadores: exatidão – índice de Willmott (d); erro quadrático médio (EQM), erro médio absoluto (EMA), coeficiente de correlação (r) e coeficiente de determinação (R2). Os resultados obtidos indicam a existência de boa correlação entre os dados de precipitação observados e do sensor TRMM. Tais resultados mostram a eficiência da utilização do satélite TRMM 3B43.
Palavra-chave: Processamento de imagens, Satélites, Índices de vegetação.
Evaluation of precipitation estimated by an orbital sensor in the Pantanal Mato-Grossense
A B S T R A C T
In this work a comparative analysis was carried out between observed precipitation data and precipitation data estimated by the TRMM satellite with the objective of evaluating the precipitation efficiency estimated by the orbital sensor at three experimental sites in the Pantanal biome of Mato Grosso located near the Private Reserve of the Natural Heritage (RPPN) Sesc Pantanal, in the municipality of Barão de Melgaço considered the largest private nature reserve in Brazil, 160 km away from Cuiabá, MT. Precipitation data from meteorological towers (pluviometer) and the orbital sensor Tropical Rainfall Measuring Mission (TRMM) product 3B43 were used for the development of the project. Data evaluation was performed using some indicators: accuracy - Willmott index (d); mean squared error (MSE), mean absolute error (MAE), correlation coefficient (r) and determination coefficient (R2). The results obtained indicate the existence of a good correlation between the observed precipitation data and the TRMM sensor. These results show the efficiency of using the TRMM 3B43 satellite.
Keywords: Image processing, Satellites, Vegetation indexes.
Downloads
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2021 Brazilian Journal of Physical Geography

This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with Revista Brasileira de Geografia Física agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0) license that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted to make their work available online before or during the editorial process, on academic social networks, digital repositories, or preprint servers. After publication in Revista Brasileira de Geografia Física, authors are expected to update the preprint or postprint versions on the platforms where they were originally made available, providing a link to the final published version and any other relevant information, with proper recognition of authorship and the initial publication in this journal.
You are free to:
Share — copy and redistribute the material in any medium or format for any purpose, even commercially.
Adapt — remix, transform, and build upon the material for any purpose, even commercially.
The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.