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从近三十年西北太平洋台风和北大西洋飓风发生频数的资料中选取了四组最显著的年份,进行了大尺度环流的分析,发现两大洋热带气旋发生数的距平同时为正与同时为负的年份具有完全反相的长波型,并且高低纬的长波分布也趋于反向,在两大洋热带气旋发生数距平反号的两种情况下,热带和副热带长波型也是近于反相的,但高低纬长波分布近于同相。研究还揭示热带环流和海温场对于所选的对比年份也表现出不同的特征。
From the data of frequent occurrences of typhoon in Northwest Pacific and hurricanes in the North Atlantic over the past thirty years, four groups of the most significant years were selected and large-scale circulation analyzes were conducted. It was found that the anomalies of TCs in both oceans were both positive and at the same time Negative years have completely inverted longwave patterns, and longwave distributions at high and low latitudes also tend to be opposite. In both cases, the tropical and subtropical longwave patterns are also near-reverse in both cases , But the latitude and longitude wave distribution near the same phase. The study also revealed that the tropical circulation and the SST field also showed different characteristics for the selected comparative years.