Preliminary study of the spatial distribution of summer subtropical atmospheric vortices over northwest Pacific

DAI Kan; LUO Zhe-xian; LI Chun-hu; YU Hui; TENG Dai-gao

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DAI Kan, LUO Zhe-xian, LI Chun-hu, YU Hui, TENG Dai-gao. Preliminary study of the spatial distribution of summer subtropical atmospheric vortices over northwest Pacific[J]. Haiyang Xuebao, 2008, 30(2): 20-25.

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DAI Kan, LUO Zhe-xian, LI Chun-hu, YU Hui, TENG Dai-gao. Preliminary study of the spatial distribution of summer subtropical atmospheric vortices over northwest Pacific[J]. Haiyang Xuebao, 2008, 30(2): 20-25.

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Preliminary study of the spatial distribution of summer subtropical atmospheric vortices over northwest Pacific

1.
National Meteorological Center, Beijing 100081, China
2.
School of Remote Sensing, Nanjing University of Information Science & Technology, Nanjing 210044, China
3.
Shandong Provincial Meteorological Bureau, Jinan, 250000, China
4.
Shanghai Typhoon Institute, Shanghai 200030, China
5.
Zhejiang Provincial Meteorological Bureau, Hangzhou 310017, China

Received Date: 2007-02-05
Rev Recd Date: 2007-08-05

Abstract

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.
- subtropics vortex,
- spatial-temporal distribution,
- three-dimensional structure

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References(12)

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