主办单位：中国气象局沈阳大气环境研究所
国际刊号：ISSN 1673-503X
国内刊号：CN 21-1531/P
气象与环境学报

气象与环境学报 ›› 2011, Vol. 27 ›› Issue (6): 43-48.doi:

• 论文 • 上一篇    下一篇

东亚地区北方气旋和南方气旋活动频数的时空特征

王艳玲1 王黎娟2   

  1. 1.江苏海事职业技术学院，江苏 南京 211170；2.南京信息工程大学大气科学学院，江苏 南京 210044
  • 出版日期:2011-12-30 发布日期:2011-12-30

Spatial-temporal characteristics of activity frequencies of northern cyclone and southern cyclone in East Asia

WANG Yan-ling1 WANG Li-juan2   

  1. 1.Jiangsu Maritime Institute, Nanjing 211170, China; 2. School of Atmospheric Science, Nanjing University of Information Science and Technology, Nanjing 210044, China
  • Online:2011-12-30 Published:2011-12-30

PDF (PC)

669

被引次数

6

摘要： 利用1953—2007年NCEP/NCAR再分析逐日海平面气压场资料，统计分析了东亚地区北方气旋和南方气旋的时间和地域分布特征。结果表明：南北气旋活动频数存在明显的年际和年代际变化，伴随着一次全球性的年代际气候跃变，20世纪80年代初期北方气旋活动频数出现了显著的突变。从月际分布来看，5月份北方气旋频数最多，8月份南方气旋频数最多；春季北方气旋活动频繁，存在着明显的两个高值中心，分别位于蒙古国中部和我国东北北部地区；夏季南方气旋活动频繁，主要集中在我国东部沿海及日本南部海面，南北气旋活动频数的季节变化和大气环流的变化密切相关，相关统计结果可为加强对东亚温带气旋活动规律的认识和了解，并进行预测和预报提供参考。

关键词: 北方气旋, 南方气旋, 活动频数, 东亚地区

Abstract: Based on the NCEP/NCAR daily reanalysis sea level pressure field data from 1953 to 2007, the spatial-temporal characteristics of activity frequencies of northern cyclones and southern cyclones in East Asia were analyzed. The results show that there are obvious inter-annual and inter-decadal variability for activity frequencies of northern cyclones and southern cyclones. With the inter-decadal climatic jump in the global scale, activity frequencies of northern cyclones have an obviously abrupt change in 1980s. The most activity frequencies of northern cyclones and southern cyclones appear in May and in August, respectively. Northern cyclones are frequent in spring and have two obviously large values centers. The centers are located in the middle of Mongolia and the north of Northeast China, respectively. Southern cyclones are frequent in summer and they are mainly located in the sea regions of the east of China and the south of Japan. The seasonal variations of activity frequencies of southern cyclones and northern cyclones are related to atmospheric circulation. The relationally analytical results of this study could provide the references for knowing well the activity rules of extratropical cyclone in East Asia and forecasting cyclone activity.

Key words: Northern cyclone, Southern cyclone, Activity frequency, East Asia region