DISTRIBUTION AND PROBABILITY OF RAINFALL OCCURRENCE IN CÁCERES, MATO GROSSO STATE, BRAZIL

Authors

  • Jaqueline Aguilla Pizzato Universidade do Estado de Mato Grosso (UNEMAT), Brasil
  • Rivanildo Dallacort Universidade do Estado de Mato Grosso (UNEMAT), Brasil
  • Rafael César Tieppo Universidade do Estado de Mato Grosso (UNEMAT), Brasil
  • Alcir José Modolo Universidade Tenológica Federal do Paraná (UTFPR), Brasil
  • Cassiano Cremon Universidade do Estado de Mato Grosso (UNEMAT), Brasil
  • Patrícia Simone Palhana Moreira Universidade do Estado de Mato Grosso (UNEMAT), Brasil

Keywords:

Incomplete Gamma function, climate, meteorology.

Abstract

Rainfall is an important meteorological element, and the knowledge on its historical records is relevant for monitoring the impacts caused by its prolonged excess or lack. This study aimed to evaluate the monthly and annual rainfall variability and the probability for its occurrence, by using the incomplete Gamma distribution model, for the rainfall data from Cáceres, Mato Grosso State, Brazil. A series of 26 years data, provided by the National Institute of Meteorology, which supports a station in Cáceres, was used. The annual rainfall amounts showed great variability, with minimum of 972.9 mm, in 1985, and maximum of 1,624.1 mm, in 1998. The monthly data pointed out two well defined seasons: the dry season (May to September) and the rainy one (October to April). The lowest monthly averages occurred in June, July, and August, with 16.59 mm, 17.90 mm, and 20.09 mm, respectively. The estimates for the ? parameter ranged from 0.9, in June and August, to 13.4, in March. The ? parameter ranged from 13.2, in March, to 33.1, in January. The highest rainfall probability takes place from December to March, while June, July, and August show the lowest rainfall probability.

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Author Biographies

Jaqueline Aguilla Pizzato, Universidade do Estado de Mato Grosso (UNEMAT), Brasil

Mestranda em Ambiente e Sistermas de Produção Agrícola, UNEMAT - Tangará da Serra

Rivanildo Dallacort, Universidade do Estado de Mato Grosso (UNEMAT), Brasil

Engenheiro Agrícola, Prof. Dr. Coordenador Mestrado em Ambiente e Sistemas de Produção Agrícola, Departamento de Agronomia, UNEMAT - Campus Universitário de Tangará da Serra- MT

Rafael César Tieppo, Universidade do Estado de Mato Grosso (UNEMAT), Brasil

Engenheiro Agrícola, Prof. M.Sc. Departamento de Agronomia, UNEMAT - Campus Universitário de Tangará da Serra- MT

Alcir José Modolo, Universidade Tenológica Federal do Paraná (UTFPR), Brasil

Departamento de Agronomia, UFTPR - Pato Branco - PR

Cassiano Cremon, Universidade do Estado de Mato Grosso (UNEMAT), Brasil

Engenheiro Agrônomo, Prof. M.Sc. Departamento de Agronomia, UNEMAT - Campus Universitário de Cáceres- MT

Patrícia Simone Palhana Moreira, Universidade do Estado de Mato Grosso (UNEMAT), Brasil

Graduanda em Ciências Biológicas, UNEMAT.

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Published

2012-04-18

How to Cite

PIZZATO, J. A.; DALLACORT, R.; TIEPPO, R. C.; MODOLO, A. J.; CREMON, C.; MOREIRA, P. S. P. DISTRIBUTION AND PROBABILITY OF RAINFALL OCCURRENCE IN CÁCERES, MATO GROSSO STATE, BRAZIL. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 42, n. 2, p. 137–142, 2012. Disponível em: https://revistas.ufg.br/pat/article/view/14144. Acesso em: 30 jun. 2024.

Issue

v. 42, n. 2, Apr./Jun. 2012

Section

Biosystems Engineering

License

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