SISTEMAS FRONTAIS SOBRE A AMÉRICA DO SUL PARTE II: MONITORAMENTO MENSAL EM DADOS DA REANÁLISE I DO NCEP/NCAR

Abstract

A tracking of the frontal systems over South America is performed by the Climate Studies Group at the University of São Paulo  (GrEC/USP) since January 2014. This analysis used an objective methodology for tracking the frontal systems that consists in analyze daily data from I NCEP / NCAR Reanalysis I and verify the occurrence of decrease in temperature at 925hPa, simultaneous to a shift in the meridional wind in 925hPa and sea level pressure increase one day to another. This monitoring is done through maps with the number and anomalies of frontal systems and also analyzing the occurrence of these systems in grid points on the coast, inland and center of the continent.