| 西北太平洋热带气旋频数异常与五类主要大尺度环流型的关系 |
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| 引用本文： | 周伟灿,张小雨,赵海坤,沈新勇.西北太平洋热带气旋频数异常与五类主要大尺度环流型的关系[J].大气科学学报,2022,45(1):30-39. |
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| 作者姓名： | 周伟灿 张小雨 赵海坤 沈新勇 |
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| 作者单位： | 南京信息工程大学 气象灾害教育部重点实验室/气候与环境变化国际合作联合实验室/气象灾害预报预警与评估协同创新中心, 江苏 南京 210044;南京信息工程大学 气象灾害教育部重点实验室/气候与环境变化国际合作联合实验室/气象灾害预报预警与评估协同创新中心, 江苏 南京 210044;武警陕西省总队, 陕西 西安 710000;南京信息工程大学 气象灾害教育部重点实验室/气候与环境变化国际合作联合实验室/气象灾害预报预警与评估协同创新中心, 江苏 南京 210044;中国科学院 大气物理研究所云降水物理与强风暴重点实验室, 北京 100029 |
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| 基金项目： | 国家自然科学基金资助项目（41675072；41790471；41530427）；国家重点研发计划项目（2016YFC0203301）；国家重点基础研究发展计划（2015CB453201） |
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| 摘 要： | 利用Yoshida and Ishikawa(2013)提出的一套客观分类方法对1979-2013年夏季(5-10月)共796个热带气旋(Tropical Cyclone,TC)生成前的大尺度环流背景场进行了分型,主要包括了季风切变线型(monsoon Shear Line,SL)、季风涡旋区(monsoon Gyre...
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| 关 键 词： | 热带气旋生成频数异常 西北太平洋 大尺度环流型 |
| 收稿时间： | 2020/3/23 0:00:00 |
| 修稿时间： | 2020/6/21 0:00:00 |
Relationship between the anomalous frequency of tropical cyclone genesis over the western North Pacific and five major large-scale circulation patterns |
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| ZHOU Weican,ZHANG Xiaoyu,ZHAO Haikun,SHEN Xinyong.Relationship between the anomalous frequency of tropical cyclone genesis over the western North Pacific and five major large-scale circulation patterns[J].大气科学学报,2022,45(1):30-39. |
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| Authors: | ZHOU Weican ZHANG Xiaoyu ZHAO Haikun SHEN Xinyong |
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| Institution: | Key Laboratory of Meteorological Disaster, Ministry of Education/Joint International Research Laboratory of Climate and Environment Change/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044, China;Key Laboratory of Meteorological Disaster, Ministry of Education/Joint International Research Laboratory of Climate and Environment Change/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044, China;People''s Armed Police Crops of Shaanxi Province, Xi''an 71000, China; Key Laboratory of Meteorological Disaster, Ministry of Education/Joint International Research Laboratory of Climate and Environment Change/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044, China;Key Laboratory of Cloud-Precipitation Physics and Severe Storms, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | In this study,the environment of 796 tropical cyclones genesis (TCG) from 1979 to 2013 is assessed,via the categorization system developed by Yoshida and Ishikawa (2013),into five flow large-scale circulation patterns:monsoon shear line (SL),monsoon confluence region (CR),monsoon gyre (GY),easterly wave (EW) and preexisting tropical cyclone (PTC).The SL,CR and GY are related to the circulation pattern of monsoon trough among them.It is shown that most of the tropical cyclones are associated with circulation pattern of monsoon trough (such as SL-41%,CR-20% and GY-6%),and the TCG location and strength characteristics of TCs with each pattern is discussed.Based on the classification results,is found that the anomalies of the circulation pattern related to the monsoon trough and PTC are the main causes of the abnormal TCG frequency,and the possible physical origin thereof is given preliminarily. |
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| Keywords: | anomalous frequency of tropical cyclone genesis the western North Pacific large-scale circulation pattern |
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