ANALYSIS OF THE TEMPORAL VARIABILITY OF PRECIPITATION IN RECIFE-PE

Abstract

The city of Recife-PE has geographic singularities that interfere in the temporal and spatial distribution of precipitation, which is associated with topographical factors, wind displacement, vegetation, urbanization, among others. Thus, this location has a strong potential for the occurrence of extreme precipitation events, whether by flooding, flooding or landslides affecting the population's quality of life. We sought to analyze the behavior of this variable through monthly precipitation data covering the period 1961 to 2019, obtained from the Meteorological Database for Education and Research (BDMEP) of the National Institute of Meteorology (INMET), satellite images GOES-12, from the database of the Center for Weather Forecasting and Climate Studies (CPTEC/INPE) and data from the Tropical Rainfall Measuring Mission (TRMM) satellite. To verify the occurrence or not of trends in the time series, the Mann-Kendall (MK) test was used. This test uses the null hypothesis H0, when there is no precipitation trend, and the alternative hypothesis H1, when there is a trend in the data series, for the month of March negatively at the level of 5% (p<0.05), rejecting the null hypothesis. From the TRMM satellite images, INMET data and GOES-12 satellite images, it was evidenced that the Intertropical Convergence Zone (ITCZ) meteorological system, with its favorable convective activity and its climatological position further south of the Equator contributed to the accumulated precipitation observed in Recife-PE.