Dry spell events in Brazil: historical analysis bin years of climatic contrast
International Journal of Development Research
Dry spell events in Brazil: historical analysis bin years of climatic contrast
Received 11th October, 2017; Received in revised form 26th November, 2017; Accepted 23rd December, 2017; Published online 31st January, 2018
Copyright © 2018, Anderson Jackson da Silva Magalhães et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
In South America, water in several regions is a strong limiting condition for socioeconomic development. More constant losses are observed in social and economic areas due to drought, for example, in the Northeast of Brazil (NEB) and Central West of Brazil (CWB), mainly in activities such as agriculture, animal husbandry, electricity distribution, water supply and tourism. The objective of this work is to investigate quantitatively and qualitatively the characteristics of 5-day dry spells in Brazil during the southern seasons and the relation of these drought events in normal years and climatic contrasts such as El Niño, La Niña in the tropical pacific for the period (1971-2005) with the aim of improving knowledge of the seasonal variation of rainfall in the country, with emphasis on the summer to enhance socioeconomic actions that depend on their variability with less risks. Data from the National Center Environment Prediction (NCEP) - Climate Prediction Center (CPC) of the National Ocean and Atmospheric Administration (NOAA) on Brazil, available at grid points (1° x 1°). The results show for the data observed (1971-2005) the variations of summer over Brazil for the southern and autumn seasons corresponding to the seasons with the highest rainfall in the Northeast and Central West of Brazil.
