Veranicos na região dos cerrados brasileiros frequência e probabilidade de ocorrência

Eduardo Delgado Assad; Edson Eyji Sano; Ryo Masutomo; Luis Hernan R. de Castro; Fernando A. Macena da Silva

doi:10.1590/S1678-3921.pab1993.v28.3962

Dry spells in the brazilian "cerrados" region: frequency and probability of occurrence

Authors

Eduardo Delgado Assad
Edson Eyji Sano
Ryo Masutomo
Luis Hernan R. de Castro
Fernando A. Macena da Silva

DOI:

https://doi.org/10.1590/S1678-3921.pab1993.v28.3962

Keywords:

pluvial precipitation, frequencial analysis

Abstract

An analysis of daily precipitation data from 100 pluviometric stations in the Brazilian "cerrados" (savanna-like vegetation), using historical. series of 20 or more years, was utilized to identify dry spells of 10, 15 and 20 days. This information of the frequencial analysis was arranged using the Geographical Information System. The occurrence probability of dry spells, estimated by the distribution function of Gumbell & Weibull using recurrence intervals of 5 to 100 years, allowed identification of risk periods for conventional agriculture (nonirrigated). Therefore, it was possible to make a global analysis of this climatic problem, which is critical for the agricultural production in the Brazilian "cerrado" ecosystem.

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Published

1993-09-01

Issue

v.28, n.9, set. 1993

Section

CLIMATOLOGY

How to Cite

Assad, E. D., Sano, E. E., Masutomo, R., de Castro, L. H. R., & da Silva, F. A. M. (1993). Dry spells in the brazilian "cerrados" region: frequency and probability of occurrence. Pesquisa Agropecuaria Brasileira, 28(9), 993-1003. https://doi.org/10.1590/S1678-3921.pab1993.v28.3962

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