期刊
GEOPHYSICAL RESEARCH LETTERS
卷 50, 期 5, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2022GL102095
关键词
tropical cyclone activity; interdecadal change; synoptic-scale waves; western North Pacific
In this study, we investigated the interdecadal change in tropical cyclone (TC) activity over the western North Pacific (WNP) in the early 2010s. The interdecadal change in TC activity showed a meridional tripole pattern at the western boundary of the WNP. While TC activity decreased over the northern South China Sea (SCS) and Taiwan, it increased over the southern SCS and to the north of Shanghai after the early 2010s.
In this study, we investigated the interdecadal change in tropical cyclone (TC) activity over the western North Pacific (WNP) in the early 2010s. At the western boundary of the WNP, the interdecadal change in TC activity exhibited a meridional tripole pattern. In contrast to the reduced activity over the northern South China Sea (SCS) and Taiwan, TC activity increased over the southern SCS and to the north of Shanghai after the early 2010s. Herein, we focused on the northern WNP. Over the last decade, frequent TC occurrences have affected East China, Korea and Japan. In this work, we examined the influence of synoptic-scale waves (SSWs) on the interdecadal change in TC activity. During the 2011-2021 period, SSWs tended to propagate northward, resulting in more TC tracks affecting the northern WNP and surrounding countries. In contrast, the westward-propagating SSWs before the early 2010s were more likely to favor westward-moving TCs.
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