Secular Climate and Atmospheric Circulation Fluctuations over the Atlantic Area

该项目将继续分析大西洋周围发生的长期气候和大气环流波动。该研究将分析大西洋海表温度（SST）和相关的大气环流变率，以及自20世纪40年代中期以来最近发生的气候波动。本文将评价南方涛动在大西洋海温异常发展演变中的作用。本文将研究北大西洋涛动（NAO）与大西洋SO之间的相互作用，以及它们与非冬季海温异常的关系。自20世纪40年代中期以来，冬季大西洋西风带的强度一直波动不定，直到20世纪50年代末、60年代末和70年代末都异常强劲。该研究将进一步记录这些环流和与之相关的陆地站和海洋空气温度场的气候波动，并将评估春、夏、秋发生的气候波动的证据。将审查海温与气候波动之间的关系，以探索海洋与突然波动和随后的持续环流和气候制度之间的联系。这项工作可以提高我们对季节气候的预测能力，并可能有利于北大西洋的海洋渔业。

This project will continue the analysis of secular climate and atmospheric circulation fluctuations occurring around the Atlantic Ocean. The study will analyze Atlantic sea surface temperature (SST) and associated atmospheric circulation variability as well as recent climatic fluctuations occurring since the mid-1940s. The role of the Southern Oscillation (SO) in the development and evolution of Atlantic SST anomalies will be evaluated. The interaction between the North Atlantic Oscillation (NAO) and SO in the Atlantic will be examined as will their association with SST anomalies in non-winter seasons. Since the mid-1940s, the wintertime Atlantic westerlies have fluctuated in strength, being unusually strong until the late 1950s, the 1960s and late 1970s. The study will further document these circulation and associated climatic fluctuation in the land station and marine air temperature fields, and it will evaluate the evidence for climatic fluctuations occurring in spring, summer and autumn. The association between SSTs and the climatic fluctuations will be examined, to explore ocean linkages to the abrupt fluctuations and subsequent persistent circulation and climate regimes. This work may improve our capability for seasonal climate prediction and may benefit marine fishery industry in the North Atlantic.