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Climatic accompaniment of watersheds from Mundaú River, State Of Alagoas and Pernambuco, And from Paraíba River, State Of Paraiba, Brazil

Author(s): Djane Fonseca da Silva | Lincoln Eloi Araújo | Mary Toshie Kayano | Francisco de Assis Salviano de Sousa

Journal: Engenharia Ambiental : Pesquisa e Tecnologia
ISSN 1678-2178

Volume: 5;
Issue: 3;
Start page: 79;
Date: 2008;
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Keywords: Space and temporal variability | Watershed of the Mundaú and Paraíba rivers | RAI.

The monitoring of the pluviometric variability in certain localities can be effected through the job of climatic indices. This tool is particularly essential in the region of the basins of the river Mundaú and the river Paraíba, therefore they are important situated hidrografic basins in region Northeast of Brazil (NEB). Analyzing the temporal variation of the precipitation in the Basin of the river Mundaú, in the period of 1974 the 1983, a change in the precipitation standards was verified being the “point of inflection” the year of 1974. Before this, in the Médio Mundaú (MM) and Alto Mundaú (AM), the years had been drier and after 1974 had been more humid occurring the opposite in Baixo Mundaú (BM). Already in the Basin of the river Paraíba, a “point of inflection” in the precipitation distribution was found in the region of the Alto Paraíba. Already for the sub-basins of the Médio and Baixo Paraíba, similarity in the alternation between dry and rainy years throughout the RAI (rainfall anomaly index) series was verified.
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