温帯低気圧化の指標としての熱帯低気圧の発生過程に関する研究

DOI Web Site Web Site 参考文献19件
  • DATT Ishan
    Department of Applied Physics and Applied Mathematics, Columbia University, New York, USA
  • CAMARGO Suzana J.
    Lamont-Doherty Earth Observatory, Columbia University, New York, USA
  • SOBEL Adam H.
    Department of Applied Physics and Applied Mathematics and Department of Earth and Environmental Sciences, Columbia University, New York, USA
  • McTAGGART-COWAN Ron
    Numerical Weather Prediction Research Section, Environment Canada, Canada
  • WANG Zhuo
    Department of Atmospheric Sciences, University of Illinois, Illinois, USA

書誌事項

タイトル別名
  • An Investigation of Tropical Cyclone Development Pathways as an Indicator of Extratropical Transition

この論文をさがす

抄録

<p>A significant fraction of tropical cyclones develop in baroclinic environments, following tropical cyclogenesis “pathways” that are characterized by dynamical processes often associated with mid-latitudes. This study investigates whether such storms are more likely to undergo subsequent extratropical transition than those that develop in more typical, non-baroclinic environments. We consider tropical cyclones globally in the period of 1979–2011 using best-track datasets and define the genesis pathway of each storm using McTaggart-Cowan's classification: non-baroclinic, low-level baroclinic, trough-induced, and weak and strong tropical transition. In each basin, we analyze the total number and the fraction of storms that underwent extratropical transition as well as their seasonality and storm tracks according to their genesis pathways. The relationship between the pathways and extratropical transition is statistically significant in the North Atlantic and Western North Pacific, where the strong tropical transition and the trough-induced pathways have a significantly greater extratropical fraction compared with all other pathways, respectively. Latitude, longitude, and environmental factors, such as sea surface temperature and vertical shear, were further analyzed to explore whether storms in these pathways occur in environments conducive to extratropical transition, or whether a “memory” of the genesis pathway persists throughout the storm life cycle. After controlling for genesis latitude, the relationship between the strong tropical transition and trough-induced pathways and the extratropical transition occurrence remains statistically significant, implying a lasting effect from the pathway on the probability of an eventual extratropical transition.</p>

収録刊行物

  • 気象集誌. 第2輯

    気象集誌. 第2輯 100 (4), 707-724, 2022

    公益社団法人 日本気象学会

参考文献 (19)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ