Comparaçao da velocidade do vento sobre o Oceano Atlântico Tropical estimada pelo Satélite MetOp-A /ASCAT e medida pelas bóias pirata

Abstract

For oceanographic and meteorological studies, understanding the wind behavior on the surface of the ocean is of great relevance. It is through the transfer of momentum, caused mainly by the wind, that the exchange of heat occurs between the ocean and the atmosphere, interfering significantly in time and climate. In this work, a comparison was made between the daily wind speed fields estimated from the MetOp-A Satellite (ASCAT sensor) and the PIRATA project buoys located in the Tropical Atlantic Ocean. These comparisons were made between January 2014 and May 2017. These comparisons were made in the period between January 2014 and May 2017, and the objective of the study was to determine the potential of ASCAT data to estimate the wind field on the surface of the Ocean. The statistical parameters obtained indicated that the wind speeds estimated by ASCAT have a high correlation with the in situ data of the PIRATA buoys, with an R2 ranging from 0.75 to 0.96. The comparisons indicate that the wind velocities with remote sensing have a strong agreement with the data of the buoys.