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Volume 28 Issue 3

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Article Navigation > Haiyang Xuebao > 2006 > 28(3): 41-46

WANG Wen-lan, WANG Yuan, WU Rong-sheng. The force balance for tropic motions in summer northern oceans[J]. Haiyang Xuebao, 2006, 28(3): 41-46.

Citation:

WANG Wen-lan, WANG Yuan, WU Rong-sheng. The force balance for tropic motions in summer northern oceans[J]. Haiyang Xuebao, 2006, 28(3): 41-46.

WANG Wen-lan, WANG Yuan, WU Rong-sheng. The force balance for tropic motions in summer northern oceans[J]. Haiyang Xuebao, 2006, 28(3): 41-46.

Citation:

WANG Wen-lan, WANG Yuan, WU Rong-sheng. The force balance for tropic motions in summer northern oceans[J]. Haiyang Xuebao, 2006, 28(3): 41-46.

The force balance for tropic motions in summer northern oceans

1.
Key Laboratory of Mesoscale Severe Weather of Ministry of Education, Nanjing University, Nanjing 210093, China;Jiangsu Meteorological Observatory, Nanjing 210008, China
2.
Key Laboratory of Mesoscale Severe Weather of Ministry of Education, Nanjing University, Nanjing 210093, China

Received Date: 2005-06-27
Rev Recd Date: 2006-03-25

Abstract

By using the NCEP/N CAR reanalysis of daily with the horizontal resolution of 1.0°×1.0°(lat/lon grid),the general characteristics of the tropic motions in the north Pacific during 1998~2003 averaged for June-August,including the horizontal/vertical wind field,divergence and vorticity have been analysed.The main parts of the horizontal dynamical equations have been calculated and compared,according to which the force balance was investigated and the corresponding simplified equations were carried out.It is shown that the zonal wind(u)is geostrophic just out side the equator and the meridional wind(v)attains geostrophic beyond 30 N.For tropical cyclones are commonly generated in the tropical Pacific,the results may be attributed to the mechanism of the tropical cyclone genesis and development.
- tropics,
- dynamical equations,
- zonal semi-geostrophic motion

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