Influencia da tsm associada ao regime pluvial em bacias hidrográficas com superfície de floresta e urbana na Amazônia oriental.

Abstract

The research in question covers the areas of Caxiuanã- PA, a humid tropical forest land extending 330 000 ha and the area of Belém-PA, an urban locality with an area of approximately 1059.458 square kilometers. This study analyzed the National Institute of Meteorology data series (INMET), the CMORPH and LBA (Grand Experiment Scale Biosphere-Atmosphere Experiment in Amazonia) in partnership with Embrapa. By the need to mitigate some physical, social, economic and environmental impacts of weather events or extreme events, it is necessary or even essential to study some of these weather variables and some physiographic characteristics of catchments relating to the areas in question in order to relate, predict or observe the behavior of the same over the years. Thus, the job in question has intended to address a study of the anomalies of sea surface temperature (SST) in the equatorial Pacific related to precipitation (PRP) in areas of forest and urban area, based on database and literature . This study was results higher climatological average for Bethlehem in relation to Caxiuanã (PA), with a higher annual accumulated for the city, both spatial data and for occasional rain gauges. In relation to physiographic features, Caxiuanã (PA) has a greater altitude and range altimetry in relation to the basins of Bethlehem (PA). In this work we used the Analysis Components (PCA), in said data series, which resulted in higher correlations for the months of March and April and lower correlations for November. The monthly and annual data, which explain greater variance, are the data CMORPH Caxiuanã (PA), with 62.53% and 85.45%, respectively. For annual data, the area of Caxiuanã (PA) also explains the higher percentage of data variance, with the value of 90.99% of them. As for the monthly and annual rainfall variability versus the sea surface temperature, data that explain greater variance are occasional rain gauges Caxiuanã (PA), with 73.56% and 92.28%.