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气象:2020,46(6):765-775
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CPS法对影响江苏台风的适用性研究
喜度,韩桂荣,殷笑茹,李杨,刘寅,唐云志
(江苏省气象探测中心,南京 210009;江苏省气象台,南京 210008;江苏省气象信息中心,南京 210008;江苏省气象科学研究所,南京 210009)
Study on Application of CPS Method to Typhoons Affecting Jiangsu Province
XI Du,HAN Guirong,YIN Xiaoru,LI Yang,LIU Yin,TANG Yunzhi
(Jiangsu Meteorological Observation Center, Nanjing 210009; Jiangsu Meteorological Observatory, Nanjing 210008; Jiangsu Meteorological Information Center, Nanjing 210008; Jiangsu Research Institute of Meteorological Science, Nanjing 210009)
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投稿时间:2019-01-08    修订日期:2020-04-14
中文摘要: 利用NCEP FNL 1°×1°再分析资料、江苏省地面自动站资料以及长三角地区新一代天气雷达资料,使用气旋相空间法(CPS)对2000—2015年影响江苏台风的相空间参数进行统计分析。经过和台风年鉴比对,CPS法能较为客观准确地描述各类路径影响江苏台风的变性过程,而结果表明:影响江苏的台风发生变性的多为登陆北上、变性前强度较强的台风。进一步分析台风“海葵”和“麦德姆”两个CPS轨迹不同的台风相空间参数,发现其参数轨迹能较好地反映台风变性过程中的热力结构和环流特征演变,与台风降水的落区和强度有一定关联,CPS参数变化明显的“海葵”,台风降水范围和强度变化较大,参数变化较小的“麦德姆”,降水基本位于台风本体周边。
Abstract:Based on NCEP FNL (1°×1°) reanalysis data, observation data from automatic weather stations in Jiangsu Province and new generation weather radar data in Yangtze River Delta area, the cyclone phase space (CPS) method was used to analyze the phase space parameters of typhoons that occurred in Jiangsu from 2000 to 2015. The results show that the CPS method could objectively and accurately describe the transition process of typhoons in Jiangsu affected by various paths according to Typhoon Almanac (CMA-STI). Typhoons affecting the transition of typhoons in Jiangsu are mostly landing northward and show strong intensities before the transition. We further analyze phase space parameters of “Haikui” and “Matmo” with different CPS trajectories. The results show that the phase space parameter can better reflect the evolution of the thermal structure and circulation characteristics during the transition process of typhoon, and it is related to the location and intensity of typhoon precipitation. “Haikui” with obvious changes of CPS parameter has significant variations in the location and intensity of typhoon precipitation. “Matmo” with small CPS parameter changing basically has rains around the typhoon itself.
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基金项目:江苏省“333工程”科研项目(BRA2017521)、江苏省气象局科研基金面上项目(KM202005)、江苏省自然科学基金(BK20161074)和江苏省气象局开放研究基金(BJG201511)共同资助
引用文本:
喜度,韩桂荣,殷笑茹,李杨,刘寅,唐云志,2020.CPS法对影响江苏台风的适用性研究[J].气象,46(6):765-775.
XI Du,HAN Guirong,YIN Xiaoru,LI Yang,LIU Yin,TANG Yunzhi,2020.Study on Application of CPS Method to Typhoons Affecting Jiangsu Province[J].Meteor Mon,46(6):765-775.