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タイトル: | Intensification of a distant hurricane by warm‐core eddies in the Gulf Stream in boreal fall |
著者: | Fujiwara, Keita Kawamura, Ryuichi |
著者名の別形: | 藤原, 圭太 |
キーワード: | the Gulf Stream tropical cyclone warm-core eddies |
発行日: | Mar-2023 |
出版者: | Wiley |
誌名: | Atmospheric Science Letters |
巻: | 24 |
号: | 3 |
論文番号: | e1141 |
抄録: | This study investigated how warm-core eddies (WCEs) in the Gulf Stream (GS) modulated the intensity of a distant tropical cyclone (TC) approaching the current in October. We performed cloud-resolving regional simulations including a control run with the observed WCEs and a sensitivity run excluding the WCEs. These simulations found that the WCEs played a favorable role in the development of the distant TC. The WCEs affected the synoptic-scale thermodynamic environments over the North Atlantic through the enhanced heat and moisture supply from the GS, increasing the moisture imports toward the distant TC. The WCEs-enhanced moisture influx created very moist environments in the inner core. This inner-core moistening was favorable for deep eyewall convection and an associated TC secondary circulation, leading to TC development. This result indicates the importance of WCEs in facilitating the remote process leading to TC development that previous studies have proposed. |
著作権等: | © 2022 The Authors. Atmospheric Science Letters published by John Wiley & Sons Ltd on behalf of the Royal Meteorological Society. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
URI: | http://hdl.handle.net/2433/283109 |
DOI(出版社版): | 10.1002/asl.1141 |
出現コレクション: | 学術雑誌掲載論文等 |
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