On climate variability in Northeast of Brazil |
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Authors: | Vicente de Paulo Rodrigues da Silva |
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Affiliation: | Department of Atmospheric Sciences, Federal University of Campina Grande, Av. Aprígio Veloso, 882, Bodocongó, 58, Campina Grande, PB 109-970, Brazil |
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Abstract: | The time-series (annual period and dry- and wet-season) of eight climatic variables were analysed to ascertain the existence of climate variability in Northeast of Brazil. Results indicated generally increasing trends in most of these variables (statistically significant at p<0.01 or <0.05) by Mann–Kendall test. However, relative humidity and rainfall presented decreasing behavior. The study showed that most of the stations studied are going through a process of environmental dryness. The results also suggest that the historical trends may be related to climate variability in Northeast of Brazil, which affects both semi-arid and coastal part of the region. |
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Keywords: | Reference evapo-transpiration Class A pan evaporation Rainfall,air temperature Relative humidity Aridity index Trend |
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