The Effect of Topography on Quasi-Geostrophic Frontogenesis

Zhao Ming

doi:10.1007/BF02657362

Impact Factor: 5.8

Volume 8 Issue 1

Jan. 1991

Article Contents

Article > ADVANCES IN ATMOSPHERIC SCIENCES > 1991 > 8(1): 23-40

The Effect of Topography on Quasi-Geostrophic Frontogenesis

Zhao Ming

1.
Department of Atmospheric Sciences, Nanjing University, Nanjing

Zhao Ming

doi: 10.1007/BF02657362

Abstract
References
Related papers
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Abstract:
This paper improves Bannon’s work on the quasi-geostrophic frontogenesis in a horizontal deformation field. By setting the lower boundary condition for the equation of potential temperature on the realistic topography instead of on z = 0, a general solution for the temperature field is derived after applying conformal mapping to the equation for the potential temperature, the vertical velocity and divergence field are also calculated. The general characteristics for the frontogenetic process still are frontolytic for warm front and frontogenetic for cold front in downstream of a mountain and the reverse is true upstream of a mountain, but more fine spatial structure of the temperature field and frontogenetic characteristics than Bannon’s are obtained near surface because of the treatment of lower boundary condition. II is concluded that the frontogenetic characteristics are related to the translating speed of the deformation field with respect to the topography.
References

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Manuscript History

Manuscript received: 10 January 1991

Manuscript revised: 10 January 1991

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

The Effect of Topography on Quasi-Geostrophic Frontogenesis

Zhao Ming

1. Department of Atmospheric Sciences, Nanjing University, Nanjing

Manuscript received: 1991-01-10
Manuscript revised: 1991-01-10

Abstract: This paper improves Bannon’s work on the quasi-geostrophic frontogenesis in a horizontal deformation field. By setting the lower boundary condition for the equation of potential temperature on the realistic topography instead of on z = 0, a general solution for the temperature field is derived after applying conformal mapping to the equation for the potential temperature, the vertical velocity and divergence field are also calculated. The general characteristics for the frontogenetic process still are frontolytic for warm front and frontogenetic for cold front in downstream of a mountain and the reverse is true upstream of a mountain, but more fine spatial structure of the temperature field and frontogenetic characteristics than Bannon’s are obtained near surface because of the treatment of lower boundary condition. II is concluded that the frontogenetic characteristics are related to the translating speed of the deformation field with respect to the topography.