A theoretical study on the maintenance of the atmospheric blocking

DOI

Bibliographic Information

Other Title
  • 大気ブロッキングの持続に関する理論的研究

Abstract

A new maintenance mechanism of the atmospheric blocking is proposed, which is different from the other mechanisms in previous studies, and is verified on its effectiveness. This mechanism is based on the following two views. The first is the intensification of the persistence of the blocking by the interaction between the blocking and traveling highs and lows that have different spacial and time scales. The second is the attraction and absorption of traveling highs/lows by the blocking high/low, which is the interaction between binary eddies called 'Fujiwhara effect.' The Fujiwhara effect is the concept for explaining the northward moving of typhoons in Northern hemisphere and is essentially the same as 'beta-gyre.' We adopt these concepts into the maintenance mechanism of blocking and name the mechanism 'Selective Absorption Mechanism' (SAM). We verified its effectiveness in both case studies in the real atmosphere and numerical modellings.

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Keywords

Details 詳細情報について

  • CRID
    1390001205593722880
  • NII Article ID
    130004604555
  • DOI
    10.11345/japannctam.59.0.200.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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