Global radiation by simplified models for the state of Mato Grosso, Brazil

Authors

  • Adilson Pacheco de Souza Universidade Federal de Mato Grosso, Campus Sinop, Instituto de Ciências Agrárias e Ambientais, Avenida Alexandre Ferronato, no 1.200, Setor Industrial, CEP 78557-267 Sinop, MT.
  • Andréa Carvalho da Silva Universidade Federal de Mato Grosso, Campus Sinop, Instituto de Ciências Agrárias e Ambientais, Avenida Alexandre Ferronato, no 1.200, Setor Industrial, CEP 78557-267 Sinop, MT.
  • Adriana Aki Tanaka Universidade Federal de Mato Grosso, Campus Sinop, Instituto de Ciências Agrárias e Ambientais, Avenida Alexandre Ferronato, no 1.200, Setor Industrial, CEP 78557-267 Sinop, MT.
  • Eduardo Morgan Uliana Universidade Federal de Mato Grosso, Campus Sinop, Instituto de Ciências Agrárias e Ambientais, Avenida Alexandre Ferronato, no 1.200, Setor Industrial, CEP 78557-267 Sinop, MT.
  • Frederico Terra de Almeida Universidade Federal de Mato Grosso, Campus Sinop, Instituto de Ciências Agrárias e Ambientais, Avenida Alexandre Ferronato, no 1.200, Setor Industrial, CEP 78557-267 Sinop, MT.
  • Antônio Evaldo Klar Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Agronômicas de Botucatu, Departamento de Engenharia Rural, Fazenda Lageado, Rua José Barbosa de Barros, no 1.780, CEP 18610-307 Botucatu, SP.
  • Anthony Wellington Almeida Gomes Universidade Federal Rural do Pernambuco, Unidade Acadêmica de Garanhuns, Avenida Bom Pastor, s/no, Boa Vista, CEP 55292-270 Garanhuns, PE.

DOI:

https://doi.org/10.1590/S1678-3921.pab2017.v52.23563

Keywords:

air temperature, Amazon, Cerrado, parameterized coefficients, solar radiation

Abstract

The objective of this work was to estimate the global radiation by simplified models for the state of Mato Grosso, Brazil. The parameterized coefficients of 15 simplified models were regionally calibrated to estimate the daily global radiation, based only on air temperature, using data from 28 automatic weather stations (AWS) of the network of the Brazilian Meteorology Institute, distributed throughout the different biomes of the state of Mato Grosso. The simplified models are mostly derived from the Hargreaves and Bristow & Campbell methods, with different parameterized coefficients to be calibrated. The coefficient of determination (R2), the mean bias error (MBE), the root mean square error (RMSE), and Willmott’s d index were used to evaluate statistical performance. For the recommendation of models per station and/or biome, the models were rated numerically (position values) according to their specific performance in each statistical indicator. The simplified models derived from Bristow & Campbell showed better statistical performances for estimating daily global radiation. The values of the calibrated coefficients of the same model varied greatly among the AWS and biomes. The R2 values ranged from 0.60 to 0.75, indicating a satisfactory result for the obtained calibrations. The Bristow & Campbell model for the Amazon and the Cerrado and the Goodin model for the Cerrado are recommended, with scattering varying between 1.52 and 4.33 MJ m-2 per day and adjustments greater than 65%.

Author Biography

Adriana Aki Tanaka, Universidade Federal de Mato Grosso, Campus Sinop, Instituto de Ciências Agrárias e Ambientais, Avenida Alexandre Ferronato, no 1.200, Setor Industrial, CEP 78557-267 Sinop, MT.

Engenheiro Agrícola, Mestre em Irrigação e Drenagem, Doutorando em Irrigação e Drenagem, Instituto de Ciências Agrárias e Ambientais, UFMT, Campus de Sinop

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Published

2017-05-08

How to Cite

Souza, A. P. de, Silva, A. C. da, Tanaka, A. A., Uliana, E. M., Almeida, F. T. de, Klar, A. E., & Gomes, A. W. A. (2017). Global radiation by simplified models for the state of Mato Grosso, Brazil. Pesquisa Agropecuaria Brasileira, 52(4), 215–227. https://doi.org/10.1590/S1678-3921.pab2017.v52.23563

Issue

v.52, n.4, abr. 2017

Section

AGROMETEOROLOGY