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Dynamics and characteristics of dry and moist heatwaves over East Asia

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Title
Dynamics and characteristics of dry and moist heatwaves over East Asia
Author(s)
Kyung-Ja Ha; Ye-Won Seo; Ji-Hye Yeo; Axel Timmermann; Chung, Eui-Seok; Christian L. E. Franzke; Chan, Johnny C. L.; Yeh, Sang-Wook; Ting, Mingfang
Publication Date
2022-06
Journal
npj Climate and Atmospheric Science, v.5, no.1
Publisher
Nature Research
Abstract
© 2022, The Author(s).The increasing frequency of heatwaves over East Asia (EA) is impacting agriculture, water management, and people’s livelihood. However, the effect of humidity on high-temperature events has not yet been fully explored. Using observations and future climate change projections conducted with the latest generation of Earth System models, we examine the mechanisms of dry and moist heatwaves over EA. In the dry heatwave region, anticyclonic circulation has been amplified after the onset of heatwaves under the influence of the convergence of anomalous wave activity flux over northern EA, resulting in surface warming via adiabatic processes. In contrast, the moist heatwaves are triggered by the locally generated anticyclonic anomalies, with the surface warming amplified by cloud and water vapor feedback. Model simulations from phase six of the Coupled Model Intercomparison Project projected display intensification of dry heatwaves and increased moist heatwave days in response to projected increases in greenhouse gas concentrations.
URI
https://pr.ibs.re.kr/handle/8788114/12022
DOI
10.1038/s41612-022-00272-4
ISSN
2397-3722
Appears in Collections:
Center for Climate Physics(기후물리 연구단) > 1. Journal Papers (저널논문)
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