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MESOSCALE ANALYSIS ON THE FORMATION AND DEVELOPMENT OF SOUTHWEST VORTEX DURING 8~10 JULY 1989

Zou Bo, Chen Zhongming

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Abstract

By using conventional and non conventional observation data, a preliminary study on the formation and development of southwest vortex during 8～10 July 1989 is made. The results show that the circulation evolution of the southwest vortex in PBL displays discontinuity feature in comparision with the case in free atmosphere, but the convection and precipitation in the region of southwest vortex show same feature too and the important factors that affect formation and development of this southwest vortex are the dynamical force of unbalance fields on PBL top and positive vorticity advection on 500 hPa.

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What this paper is about

By using conventional and non conventional observation data, a preliminary study on the formation and development of southwest vortex during 8～10 July 1989 is made. The results show that the circulation evolution of the southwest vortex in PBL displays discontinuity feature in comparision with the case in free atmosphere, but the convection and precipitation in the region of southwest vortex show same feature too and the important factors that affect formation and development of this southwest vortex are the dynamical force of unbalance fields on PBL top and positive vorticity advection on 500 hPa.

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Available abstract

By using conventional and non conventional observation data, a preliminary study on the formation and development of southwest vortex during 8～10 July 1989 is made. The results show that the circulation evolution of the southwest vortex in PBL displays discontinuity feature in comparision with the case in free atmosphere, but the convection and precipitation in the region of southwest vortex show same feature too and the important factors that affect formation and development of this southwest vortex are the dynamical force of unbalance fields on PBL top and positive vorticity advection on 500 hPa.

Key concepts: Vortex, Mesoscale meteorology, Vorticity, Advection, Geology, Discontinuity (linguistics), Convection, Climatology

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MESOSCALE ANALYSIS ON THE FORMATION AND DEVELOPMENT OF SOUTHWEST VORTEX DURING 8~10 JULY 1989 — Research Paper | ScholarLens