Análise climática da bacia hidrográfica do rio Mamanguape - PB

Abstract

The rainfall in brazilian Northeast presents great variability, thus, monitoring 22 the dry and rainy periods is necessary, as this is essential to ensure proper management 23 of water resources. Therefore, the Rainfall Anomaly Index was used to monitor such 24 periods, as well as their intensities. Data from 31 stations distributed along the basin of 25 the Mamanguape River with a time series of 20 years (from 1994 to 2013) was used. 26 Within each year two distinct periods were observed, one wet season and a dry period. 27 The study also includeds the weather spatial basin, which revealed three distinct 28 regions, in terms of precipitation. Finally, projections were made for reduction and 29 increase in precipitation in 20 % of the current value obtained from the time series as 30 recommended by the Intergovernmental Panel on Climate Change (2001), well as 31 projected increases in average air temperature by 1.1 and 5.4 ° C, recommended by the 10 32 same entity in its 4th report (2007). Thus it was possible to project future climate 33 changes in the watershed that may significantly alter the water intake of the same.