Análise de padrão do vento e sua relação com possibilidade de promover ressurgência - upwelling na costa de Pemba, Cabo Delgado, norte de Moçambique

Abstract

This dissertation analyzes the wind model data of the years 1980-1985, 1991-1998 and 2001- 2005 (intensity and direction) of the meteorological station of Pemba after converted for winds components, Southern (V) and Zonal (U) uses the possible position to promote coastal upwelling by the Ekman transport theory and relates to the variability of the time series of temperature and chlorophyll-a to the sea surface, average data of eight days, extracted from the images generated by the MODIS (Moderate Resolution Imaging Spectroradiometer) aboard NASA's Aqua satellite, July 2002 to December 2007, processed and examined using the Matlab2009 Wind model showed that in the months August to November are dominates North quadrant winds (Southern component, appropriate to examine the possibility for occurring coast upwelling), winter season transition period for summer (August and September) and intensify in the months from October to November (summer), and lower intensities of Zonal component. The Southern component's ability to transport water by Ekman Transport Parameter was in the approximate range around 340 at 620 kg / (m³/s). There is a relationship between time series of wind, Sea Surface Temperature and Chlorophyll-a, so in periods where the Sea Surface Temperature was high, the concentration levels of Chlorophyll-a was low and the wind component V was weak and hence lower mass transit, contrasting when has low Sea Surface Temperature, higher levels of chlorophyll-a concentration and wind of North quadrant is strong. Therefore, without taking into account the characterization of the line and topography of the coast background format, the wind pattern is favorable for occurring Pemba coast upwelling.