夏季副热带西北太平洋地区大气涡旋空间分布特征的初步研究
Preliminary study of the spatial distribution of summer subtropical atmospheric vortices over northwest Pacific
-
摘要: 应用1985—2002年夏季欧洲中期天气预报中心(ECMWF)的40a再分析资料,初步分析了副热带西北太平洋区域温带气旋、热带气旋和高空冷涡三种涡旋的三维结构及其时空分布特征。结果指出:(1)不同种类的涡旋具有不同的三维结构特征;(2)温带气旋和热带气旋主要分布在400hPa以下,涡旋分布的高值区位于近海海区,向内陆方向或向远海方向分布减少。副热带高空冷涡分布在太平洋上空的400~100hPa,呈东西向带状分布;(3)三种涡旋的个体强度有不同的年际变化特征。Abstract: Using 1985-2002 ECM WF 40-years re-analyses,a preliminary study was performed on the 3-D structure and spatial-temporal distributions of the extratropical cyclones,tropical cyclones and tropical uppertro pospheric cold vortices over the subtropical northwest Pacific in summer.Results show that:(1) the different kinds of vortices are marked by a variety of three-dimensional structures,(2)the extrat ropical and tropical cyclones are mainly under 400 hPa with their high activity in the adjacent seas and weakened in the open-sea and inland directions.The upper tropospheric cold vortices appear from 400 to 100 hPa on a zonal basis,and(3)the interannual variations in the individual intensity vary among the three kinds of vortices.
-
BARRY R G,CARLETON A M.Synoptic and dynamic climatology[C].New York:Routledge,2001:611. 秦曾灏,李永平,黄立文.中国近海和西太平洋温带气旋的气候学研究[J].海洋学报,2002,24(增刊);105-111. KEY J R,CHAN C K.Multidecadal global and regional trends in 1000 mb and 500 mb cyclone frequencies[J].Geophysical researchletters,1999,26:2053-2058. HIRSCH M E,DEGAETANO A T,COLUCCI S J.An east coast winter storm climatology[J].J Climate,2001,14t 882-899. KEVIN T.Uncertainty in hurricanes and global warming[J].Science,2005,308:1753-1754. WEBSTER P J,HOLLAND G J,CURRY J A,et al.Changes in tropical cyclone number,duration,and intensity in a warming environment[J].Science,2005,309:1844-1846. SIMMONS A J,GIBSON J.The ERA-40 project plan[R].ERA-40 Project Report Series No.1,2000,63. 许健民,王友恒.夏季西北太平洋热带对流层上部冷涡的分析[J].气象学报,1979,37:22-31. 陈联寿,丁一汇.西太平洋台风概论FM].北京:气象出版社,1985:488. SADARJOEN I A,POST F H.Detection,quantification,and tracking of vortices using streamline geometry[J].Computers &Graphics,2000,24:333-341. 马雷鸣,秦曾灏,端义宏,等.大气斜压性与人海江淮气旋发展的个例研究[J].海洋学报,2002,24:95-104. 傅刚,周发琇.极地低压研究的最新进展[J].青岛海洋大学学报(自然科学版),1999,29(1):21～28. -
计量
- 文章访问数: 930
- HTML全文浏览量: 13
- PDF下载量: 1195
- 被引次数: 0
下载:
