Identification and characterization of drought/wet events homogeneous environments based on regional climate simulations
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
30/10/2013
30/10/2013
2012
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Resumo |
The objective of this study was to identify and characterize homogeneous environments based on the probability of drought/wet occurrence in the central-northern Brazil, considering Rondonia, Mato Grosso, Goias and Tocantins States. The drought index denominated the moisture anomaly Z-index (Z-index) was used. The input climate data for the drought index was generated by the regional climate model RegCM3 for the period from 1975 to 1989. As result of cluster analysis, it was identified 13 homogeneous environments. These environments were characterized based on the probability of drought/wet, relative density of drought/wet occurrence, annual rainfall variability and probability of drought occurrence during the rainy season (October to March). The Mato Grosso State had the highest number of homogeneous environments and the environment 11, located at southwest of this State had the highest probability of drought occurrence, 9%. The environment 10, located at the extreme east of Goias State, showed the lowest median for the total annual rainfall. The climatic event with the highest probability of occurrence in the study area is close to normal or normality moisture. |
Identificador |
BRAGANTIA, CAMPINAS, v. 71, n. 2, supl. 1, Part 2, pp. 290-298, APR-JUN, 2012 0006-8705 http://www.producao.usp.br/handle/BDPI/36816 10.1590/S0006-87052012005000014 |
Idioma(s) |
por |
Publicador |
INST AGRONOMICO CAMPINAS |
Relação |
BRAGANTIA |
Direitos |
closedAccess Copyright INST AGRONOMICO |
Palavras-Chave | #DROUGHT #PALMER MOISTURE ANOMALY INDEX (Z-INDEX) #REGIONAL CLIMATE MODEL #UPLAND RICE #VARIABILITY #SEVERITY #BRAZIL #INDEX #SPI #AGRICULTURE, MULTIDISCIPLINARY #GEOLOGY |
Tipo |
article original article publishedVersion |