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Cha, Dong-Hyun
High-impact Weather Prediction Lab (HWPL)
Research Interests
  • Typhoon Modeling, Regional Climate Modeling, High-impact Weather


The Role of the Pacific-Japan Pattern in Extreme Heatwaves Over Korea and Japan

DC Field Value Language Noh, El ko Kim, Joowan ko Jun, Sang‐Yoon ko Cha, Dong-Hyun ko Park, Myung‐Sook ko Kim, Joo‐Hong ko Kim, Hyeong‐Gyu ko 2021-10-07T07:56:52Z - 2021-10-03 ko 2021-09 ko
dc.identifier.citation GEOPHYSICAL RESEARCH LETTERS, v.48, no.18, pp.e2021GL093 ko
dc.identifier.issn 0094-8276 ko
dc.identifier.uri -
dc.description.abstract In the Northwestern Pacific, the meridionally propagating Rossby waves, known as the Pacific-Japan (PJ) pattern, is the dominant teleconnection pattern and is considered as a source of heatwaves in East Asia. In this study, the circulation and thermodynamic characteristics of these patterns were investigated based on daily timescale to evaluate their relationship with the likelihood of heatwaves in Korea and Japan. The investigations reveal that stations in Korea and Japan record approximately 90% increase in extremely hot days (Tmax > 35°C) during the positive PJ pattern events. According to thermodynamic budget, horizontal heat advection is a key factor for the observed near-surface warming during the positive PJ. The circulation pattern during the positive PJ largely explains the enhanced warm advection and physical heating due to the increased insolation and adiabatic heating are secondary factors for near-surface warming. This phenomenon is robustly observed regardless of the definition. ko
dc.language 영어 ko
dc.publisher American Geophysical Union ko
dc.title The Role of the Pacific-Japan Pattern in Extreme Heatwaves Over Korea and Japan ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85115708007 ko
dc.identifier.wosid 000703685100020 ko
dc.type.rims ART ko
dc.identifier.doi 10.1029/2021gl093990 ko
dc.identifier.url ko
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