Characteristics and Mechanisms of Marine Heatwaves in the East Asian Marginal Seas: Regional and Seasonal Differences SCIE SCOPUS

Cited 11 time in WEB OF SCIENCE Cited 12 time in Scopus
Title
Characteristics and Mechanisms of Marine Heatwaves in the East Asian Marginal Seas: Regional and Seasonal Differences
Author(s)
Choi, Won Keun; Bang, Min Kyoung; Joh, Youngji; Ham, Yoo-Geun; Kang, Namyoung; Jang, Chan Joo
KIOST Author(s)
Choi, Won Keun(최원근)Bang, Minkyoung(방민경)Jang, Chan Joo(장찬주)
Alternative Author(s)
최원근; 방민경; 장찬주
Publication Year
2022-08
Abstract
Characteristics of marine heatwaves (MHWs) in the East Asian Marginal Seas (EAMS) were investigated using the daily Optimum Interpolation Sea Surface Temperature for 37 years (1982-2018), focusing on seasonal changes and regional differences. The summer MHWs occur 54% more frequently (2.7 events/decade) in a relatively wide area than in other seasons. The strong (up to 3.7 degrees C) and long-lasting (up to 38 days/event) winter MHWs are concentrated along the subpolar front (SPF) in the East/Japan Sea (EJS) where the MHWs are 20% longer (2.2 days/event) than in the Yellow and East China Seas (YECS). The summer MHWs are primarily driven by increased shortwave radiation associated with reduced cloud cover and latent cooling from the weakened wind over the western flank of developing subtropical highs. Driving mechanisms of the winter MHWs differ by region. The YECS MHWs occur mainly due to the atmospheric processes associated with weakening continental highs, while the EJS MHWs are largely driven by the northward shift of the SPF. Although large-scale atmospheric processes primarily drive the summer MHWs occurring in a wide area in the EAMS, our findings suggest that ocean processes can be major contributors to intensified MHW generation in limited areas, especially in winter.
ISSN
2072-4292
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/43176
DOI
10.3390/rs14153522
Bibliographic Citation
Remote Sensing, v.14, no.15, 2022
Publisher
Multidisciplinary Digital Publishing Institute (MDPI)
Keywords
marine heatwaves; sea surface temperature; ocean dynamics; atmospheric forcing; composite analysis; extreme climate
Type
Article
Language
English
Document Type
Article
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