Probable monthly rainfall for machado county, south Minas Gerais state

Authors

  • Bruno Teixeira Ribeiro
  • Junior Cesar Avanz

DOI:

https://doi.org/10.18406/2316-1817v2n12010260

Abstract

Probabilistic studies of climatic variables (e.g., rainfall) are very important to farming planning. Machado County is located in the south of Minas Gerais State, Brazil, and it is characterized by intensive coffee production. The objectives of this work were to evaluate the suitability of Gamma distribution applied to monthly precipitation data and to estimate the probable monthly rainfall. Daily rainfall data obtained from the Brazilian National Water Agency (ANA) were summed in monthly periods from 1962 to 1998, resulting in a historical dataset with 37 years of observations. After that, the monthly rainfall data were applied to Gamma distribution and the probable rainfall estimated at different probability levels. The suitability of the Gamma distribution was evaluated by Qui-Square Test (λ 2 ). The Gamma distribution was adequate for monthly periods and can be used to estimate the probable rainfall and be employed in future related studies. The historical average rainfall has approximately 40% of probability to be overcome and its use may be not suitable for irrigation projects.

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Published

2010-01-01

How to Cite

Ribeiro, B. T., & Avanz, J. C. (2010). Probable monthly rainfall for machado county, south Minas Gerais state. Revista Agrogeoambiental, 2(1). https://doi.org/10.18406/2316-1817v2n12010260

Issue

volume 2, número 1

Section

Artigo Científico

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