Tendances et ruptures des séries pluviométriques dans la région méridionale de l'Amazonie brésilienne.

Abstract : We analyze 207 rainfall gauges located in the Southern Amazon Basin and the Cerrado using Pettitt and Mann-Kendall non-parametrical tests and a linear correlation test. Pettitt's test shows that 39 gauges (16%) present chronological ruptures in the rainfall historical series. From those, 33 present negative ruptures and 6 positive ones. Mann-Kendall monthly test puts in evidence that 85 (41%) of rainfall gauges used in the analysis present negative trends mainly in the transition seasons, between the onset and offset of the dry season and 25 (12%) positive ones during the weat season. Finally, the linear correlation test shows that 136 (63%) of rainfall data present negative trends, and 76 (37%) positive ones.
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Conference papers
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https://halshs.archives-ouvertes.fr/halshs-00730732
Contributor : Vincent Dubreuil <>
Submitted on : Tuesday, September 11, 2012 - 7:51:38 AM
Last modification on : Friday, July 5, 2019 - 12:42:03 PM

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  • HAL Id : halshs-00730732, version 1

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Nathan Debortoli, Vincent Dubreuil, C. Heinke, Saulo Rodrigues Filho. Tendances et ruptures des séries pluviométriques dans la région méridionale de l'Amazonie brésilienne.. 25e Colloque de l'AIC,, 2012, Grenoble, France. pp.201-206. ⟨halshs-00730732⟩

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