Abstract
The impact of climatical variability, even within the normal range, can have significant representation in agricultural activities. Thus, the aim of this study was to analyze climate variability in Barbalha, State of Ceara (CE), focusing on the variations as a means to understand future climate change, in order to analyze the climatic variables that influence agriculture. For this research we used data of maximum air temperature, relative air humidity and total rainfall monthly and yearly in the period 1973-2013, the Conventional Meteorological Station belonging to INMET, city Barbalha - CE. The data showed variations in the temperature of maximum annual air showed great variation among the studied period, also it appears that the relative humidity is being incremented along the series studied, which may be related to increasing temperature. The years with the lowest relative humidity were the years of 1981 and 1983 and the larger 2009 and 2011 were years related to the effects El Nino and La Nina. Fluctuations of meteorological elements and its climatic changes Barbalha - CE contributes significantly to the knowledge of the climatic situation of the municipality aiding decision making in agricultural crops and other economic sectors in the municipality partners.
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