An Exploratory Study of the Relationship Between Annual Frequency of Invaded Typhoons in Taiwan and EI Nino/Southern Oscillation

Abstract

In this study, a nonlinear association between the characteristics of invaded typhoons (hereafter, referred to as ITYs) in Taiwna and sea surface temperature anomalies (SSTAs) over the equatorial eastern Pacific is identified. The relation is such that the years with a warmer-than-normal SSTA condition in the late season generally correspond to fewer annual ITYs (<4), while those with a cooler SSTA are basically associated with more ITYs (>= 4). When the SSTA becomes tood cold (<= -1.0 degreeC), however, the annual total number of ITYs is, in fact greatly reduced (~1-2) instead of being increased. 

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