sea surface temperature trend in the Atlantic and Pacific Oceans and rainfall variability in Pernambuco

The dynamics between the ocean and atmosphere affects a large portion of the global climate. The field configuration near the atmospheric pressure surface normally is strongly related to the surface temperature, mainly in the oceans. Two relationship events of great magnitude that interfere with the rainfall of Northeast Brazil (NEB) is the El Niño and Atlantic Dipole. The El Niño-Southern Oscillation (ENSO) over the equatorial Pacific, and the meridional gradient of SST anomalies over the tropical Atlantic jointly modulate a large part of interannual climate variation over NEB. This study objective to evaluate possible trends in Pacific and Atlantic Oceans sea surface temperatures (SST) to identify possible influences on the precipitation of the state of Pernambuco. To identify these influences data anomalies in the Pacific Ocean and Atlantic were compared with the rainfall anomaly index and the annual averages for each municipality in the study. The results showed that both oceans show a positive trend being a warming evidence of climate change and rainfall rates in the state are heavily influenced with the occurrence of El Niño and the Atlantic Dipole.

El Nino; ODP; Intraseasonal variability; Climate