Fractal Analysis of Low-Level Water Vapor Flux Associated With Baiu Heavy Rainfall

DOI

Bibliographic Information

Other Title
  • 梅雨期集中豪雨における大気下層水蒸気フラックスのフラクタル解析

Abstract

<p>Since the self-organization of clouds is not clarified, it is challenging to forecast the occurrence and precipitation in Baiu heavy rainfall events. Relatively high Water vapor flux at the lower troposphere associated with Baiu front plays an important role in the convection initiation. In this research, fractal dimension closely related to self-organization was applied to analyze the temporal change of water vapor flux distribution on heavy rainfall event in July 2020, Japan. We found that spatial water vapor flux distribution can be regarded as fractal in about 100 km from each grid by using JMA-MSM analysis values. Before heavy rainfall occurred, the fractal dimension of water vapor flux on 850 hPa and 900 hPa increased while that on 925 hPa decreased. At the same time, the fractal dimension inside the cloud area also increased. These results indicate fractal dimension is closely connected with convection.</p>

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Details 詳細情報について

  • CRID
    1390572034441070848
  • NII Article ID
    130008137973
  • DOI
    10.11520/jshwr.34.0_200
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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