Climatologia da Chuva em Maceió: Aspectos Climáticos e Ambientais

The objectives of the study are: i) to evaluate climatology rain in Maceió based on observed data, with emphasis climatic and environmental aspects ii) validate precipitation product for municipality. Data from 1979 2013 CHELSA (Climatologies at High Resolution Earth's Land Surface Areas) were validated by rainfall data National Water Agency (NWA) 1960 2016. Statistical indicators showed a high coefficient determination linear correlation between (R2 = 0.80; r 0.89) smallest errors (SEE 6.58 mm RMSE 18.76 mm), therefore can be applied region. time series presented period 1 (P1) - (1960 1989) above historical average 2 (P2) (1990 2016) significant reduction rainfall. Observed versus climatological normals decrease normal (1961-1990) rainy season, while relation (1981-2010) there was an increase months February, March April (between 10 20%) October December 5 15%). spatial distribution monthly via formation pluviometric gradient coast upper part Maceió. topography influences regime neighborhoods belonging administrative regions (AR) (R4, R5 R6) highest records. ENOS phases are directly responsible variability interannual rain, decadal corresponded PDO phase change changes land use occupation