Behavior of Surface Water in the Pacific and Atlantic During the Period 1982 2014

Abstract

The objective of this study is to analyze the behavior of sea surface temperatures (SST) in the areas of Niños in the Pacific Ocean and in the corresponding areas to Dipole (N-S) in the Atlantic Ocean during the period 1982-2014. The data used were the National Weather Service/Climate Prediction Center do National Oceanic and Atmospheric Administration (NWS/CPC/NOAA). It used the method of quantile to classify the standard deviations of the accumulated SST January to June as hot, normal and cold years. As was to be expected in all regions of the Pacific and Atlantic Oceans, the standard deviations were positive and above 1 for the hot years, close to zero for normal years, where only the Niño1+2 region showed a value of – 0.28 and less negative than −1 for cold years. It was also used the nonparametric Mann Kendall to assess the trends of the time series at levels 1 and 5% probability. And according to the test, only the areas of the North Atlantic and Dipole showed an increasing trend, the level of significance of 1%.

Keywords:
Niño; dipole; SST