地球科学进展 ›› 2017, Vol. 32 ›› Issue (6): 643 -650. doi: 10.11867/j.issn.1001-8166.2017.06.0643

研究论文 上一篇    下一篇

1951—2014年西北太平洋双台风活动气候特征研究
尹碧文 1, 2, 3, 任福民 1, 2, *, 李国平 1   
  1. 1.成都信息工程大学大气科学学院,四川 成都 610225;
    2.中国气象科学研究院灾害天气 国家重点实验室,北京,100081;
    3.秦皇岛市气象局,河北 秦皇岛 066000
  • 收稿日期:2017-01-03 修回日期:2017-04-20 出版日期:2017-06-10
  • 通讯作者: 任福民(1968-),男,贵州黎平人,研究员,主要从事台风和极端事件研究.E-mail:fmren@163.com
  • 基金资助:
    国家自然科学基金项目“双台风相互作用对中国极端降水的影响”(编号:41675042)和“我国东南沿海热带气旋极端降水的识别及其成因研究”(编号:41375056)资助

Climatic Characteristics of Binary Tropical Cyclones in the Northwest Pacific Ocean

Yin Biwen 1, 2, 3, Ren Fumin 1, 2, *, Li Guoping 1   

  1. 1.School of Atmospheric Sciences, Chengdu University of Information Technology,Chengdu 610225,China;
    2.State Key Laboratory of Severe Weather/Chinese Academy of Meteorological Sciences,Beijing 100081,China;
    3.Qinhuangdao Meteorological Office, Qinhuangdao Hebei 066000, China
  • Received:2017-01-03 Revised:2017-04-20 Online:2017-06-10 Published:2017-06-10
  • Contact: Ren Fumin(1968-),male,Liping County, Guizhou Province, Professor. Research areas include typhoons and extreme events.E-mail:fmren@163.com
  • About author:Yin Biwen(1992-),female,Qitaihe City,Heilongjiang Province,Master student. Research areas include interactions of binary cyclones.E-mail:biwenyin@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China “Impacts of binary tropical cyclones on extreme precipitations over mainland of China”(No.41675042)and “Identifying tropical cyclone extreme rainfall and study on its causes over Southeast China”(No.41375056)
利用台风最佳路径资料以及NCEP全球再分析资料,采用客观判定标准对1951—2014年西北太平洋2类双台风活动进行识别及气候特征分析,并对典型类双台风活动极值特征给出合适的解释。当2个台风之间距离 d≤1 800 km时被定义为双台风活动;双台风活动又划分为典型类双台风和非典型类双台风。双台风活动的主要气候特征如下:1951—2014年西北太平洋一共出现699对双台风活动,其中典型类双台风和非典型类双台风分别为446对和253对,分别占到63.8%和36.2%;典型类双台风对比例随过程最短距离减小而增大,非典型类双台风对比例随过程最短距离减小而减小。典型类双台风过程相互靠近速度最大时刻,双台风对主要表现为东—西向分布,正好受副高南侧东风气流控制,有利于东台风快速靠近西台风;典型类双台风过程逆时针互旋角速度最大时刻,双台风对主要呈东北—西南或东北东—西南西向分布,并位于副高西侧和西南方主要受东南风为主控制,有利于双台风的逆时针互旋。
Based on typhoon best track data of China Meteorological Administration and NCEP global reanalysis data, this study analyzed the characteristics of binary tropical cyclones (TC) in the Northwest Pacific Ocean during 1951 to 2014 by using the objective determine standard. When the distance between the two TCs d≤ 1 800 km, they are defined as binary tropical cyclones or binary typhoons. And binary typhoons are divided into two different types which are typical binary typhoons and atypical binary typhoons. The climatic characteristics of binary tropical cyclones are as follows: There were 699 pairs of binary typhoons in Northwest Pacific Ocean during 1951 to 2014. In these cases, there were 446 pairs of typical binary typhoons and 253 pairs of atypical cases, occupying 63.8% and 36.2%, respectively. The proportion of typical cases increased with the shortest distance decreasing, while the proportion of atypical cases decreased with the shortest distance decreasing. When the speed of typical binary typhoons moving towards each other reached the peak, binary typhoons mainly showed the east to west direction. At this time, typhoons were controlled by easterly stream of the southern edge of the subtropical high. In this situation, the east typhoon moved toward the west typhoon quickly. When the anticlockwise angular velocity of typical binary typhoons reached the peak, binary cases distributed northeast to southwest or east-northeast to west-southwest, appearing in west and southwest edge of the subtropical high and mainly being controlled by southeasterly stream, thus benefiting the anticlockwise rotation between the typical binary typhoons.

中图分类号: 

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