Sea surface height trend and variability at seasonal and interannual time scales in the Southeastern South American continental shelf between 27°S and 40°S

摘要: Abstract Recent improvements in satellite altimetry data correction terms are encouraging studies of the remote sensed sea level anomalies (SLA) progressively closer to coast and over shallow continental shelves. In this paper we describe discuss SLA trend variability at seasonal interannual time scales southeastern South American shelf influenced by Rio de la Plata estuary Patos Lagoon fresh waters. The spatio-temporal coverage gridded allows identify several patterns associated physical processes. On scales, combination solar radiation wind forcing cycles accounts for up 98% variability. Seasonal is responsible a difference 16 cm between southern (Argentinean) Uruguayan Brazilian coasts. positive/negative coherent with El Nino/La Nina events. Finally, significant positive 5 mm yr −1 found all study area except region around (Brazil) part Plata. Besides local relevance results, indicates that accurate enough unveil close shelves mentioned scales.