Structural Analysis of Vortex Tubes in a Cumulonimbus Cloud at Its Developing Stage toward an Improvement of the Risk Prediction Method of Guerilla-Heavy Rainfall
中北, 英一 ,
佐藤, 悠人 ,
西脇, 隆太山口, 弘誠
京都大学防災研究所年報. B = Disaster Prevention Research Institute Annuals. B
231 , 2015-06 , 京都大学防災研究所
Today, frequency of Guerilla-heavy rainfall are increased in Japan. Nakakita et al. (2014) developed the risk prediction system with the vertical vorticity information in a convective cell at its first stage (hereafter, baby-cell). For more accurate system, we tried to understand how a cell develops to heavy rainfall by analyzing the structure of vortex tubes inside baby-cells. Vortex tubes are observed inside all sample cells with X-MP Doppler radar in Kansai area. For more detailed analysis, we are challenging to analyze vortex tubes with phased array radar in Osaka University.