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Abnormal Activities of Tropical Cyclones in 2019 Over the Korean Peninsula
Author(s) -
Moon M.,
Ha K.J.
Publication year - 2021
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2020gl090784
Subject(s) - peninsula , sea surface temperature , climatology , tropical cyclone , environmental science , oceanography , general circulation model , geography , geology , climate change , archaeology
Approximately, 25.6 tropical cyclones (TCs) occur in the western North Pacific (WNP) each year, of which 3.4 TCs affect the Korean Peninsula (KP). In 2019, a record of seven TCs affected the KP. We investigated and elucidated the favorable conditions influencing the TCs approaching the KP using the Weather Research and Forecasting model version 4.0 (WRFv4). The cold Maritime Continent‐warm WNP sea surface temperature (SST) was found to be a major factor. The effect of the SST gradient was examined for one representative case using WRFv4 with varying SST anomalies. This study suggests that the SST gradient‐induced change in the circulation over the Maritime Continent is a main factor causing the TCs to approach the KP.