DIAGNOSIS AND TREND OF PRECIPITATION IN THE RAIN BASIN RIVER URUÇUÍ PRETO - PIAUÍ , BRAZIL

Milla Nóbrega de Menezes Costa, Raimundo Mainar de Medeiros, Manoel Francisco Gomes Filho

Abstract


The goal of this study was to analyze the timeline distribution of a time series and the trend of rainfall to 25 counties and 24 farms that make up the catchment area of ​​the river Uruçuí Preto- Piauí (BHRUP), which is an important center for agriculture and water resources sectors. They were performed in this study linear regression and measures of central tendency and dispersion of the monthly and annual rainfall. Based on the results it was found that the median was the measure of central tendency with the largest representation. The rainy season was marked during the months from October to April with an average value of 936.8 mm in the period, corresponding to 96% of annual precipitation. The months with the lowest rainfall ranged from May to September, corresponding to 4% of the annual total, showing up over time one characteristic timeline variability of the cerrado region and cerradão. The possibility in the future of extreme events occur with heavy rainfall in short periods of time is expected for this area, and with the knowledge of climate trends they can plan the most out of handling the water resources.

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DOI: https://doi.org/10.29150/jhrs.v6i3.22747

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