Caracterização termohalina da região oceânica adjacente ao Norte-Nordeste brasileiro

Abstract

Profiles collected in the years 2017, 2007 and 1999 were used to describe water masses found in the oceanic region adjacent to north-northeast Brazil, between 5 ° N and 15ºS and 38ºW and 48ºW. The oceanic region adjacent to the north-northeast Brazilian platform has a complex system of currents that transports heat and mass from one hemisphere to another. To understand the thermohaline circulation in the region, which is part of the general patterns of ocean flow, it is necessary to investigate the water masses present in a region and its movement. Data from the EN4 Met Office were used, consisting of profiles made by various profiling equipment and among them, the ARGO floats. The main profiles used were temperature and salinity. The oceanic region of interest was divided into two rectangles, to compare them and to analyze beyond their differences the possible influences that one has on the other. This division of two regions was effective, with simple results that there is a difference between the chosen zones. By observing the changes between one region and another, it was possible to raise new questions about the extent of water bodies and their annual values. The region between latitudes 5 ° N and 5 ° S and longitudes 30 ° W and 45 ° W has a water column with an ATS configuration (27.6 ° C and 21.8 ° C), AMS ~ 36.33 UPS), ACAS (19 ° C and 6.53 ° C), AIA (~ 34.54 UPS) and APAN (34.78 and 34.96 UPS). Mean values found for the 1999,2007 and 2017 averages. The region between latitudes 5ºS and 15ºS and longitudes 28ºW and 38ºW has a water column with an ATS configuration (27.2 and 20º.2, MAS (~ 36.88 UPS), ACAS (19 ° C and 6 ° C), AIA (~ 34.45 UPS), and APAN (34.78 and 34.96 UPS) average values for the 1999,2007 and 2017 averages.