LARGE SCALE ENVIRONMENTAL CONDITIONS FOR THUNDERSTORM DEVELOPMENT

Yang guoxiang; Shu Cixun

doi:10.1007/BF02678749

Impact Factor: 5.8

Volume 2 Issue 4

Oct. 1985

Article Contents

Article > ADVANCES IN ATMOSPHERIC SCIENCES > 1985 > 2(4): 508-521

LARGE SCALE ENVIRONMENTAL CONDITIONS FOR THUNDERSTORM DEVELOPMENT

1.
InstituteofMeteorology,ThePLAAirForce,Nanjing,InstituteofMeteorology,ThePLAAirForce,Nanjing

doi: 10.1007/BF02678749

Abstract
References
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Abstract:
The large-scale environmental conditions for thunderstorm development have been studied with 40 selected synoptic processes during 1972-1983. It is shown that the thunderstorms in eastern China can be divided into two types: pre-trough and post-trough. The convective instability before the pre-trough thunderstorms is established primarily by the dry and moist differential advection and that before the post-trough thunderstorms by the cold and warm differential advection. The subsynoptic scale circulation has direct effects on the establishment and release of instability. The pre-trough thunderstorms occur in the overlapping region of the ascending motion in the upper baroclinic waves and the ascending branch of the low-level jet strong wind core circulation and the post-trough thunderstorms occur in the lower convergent region below the ascending branch of the jet-front circulation. The effect of the lower dry and warm lids, the coupling of the low-and upper-level jets and the dry advection in the middle-level jet are the favorable factors for the severe storm formation.
References

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Manuscript History

Manuscript received: 10 October 1985

Manuscript revised: 10 October 1985

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

LARGE SCALE ENVIRONMENTAL CONDITIONS FOR THUNDERSTORM DEVELOPMENT

1. InstituteofMeteorology,ThePLAAirForce,Nanjing,InstituteofMeteorology,ThePLAAirForce,Nanjing

Manuscript received: 1985-10-10
Manuscript revised: 1985-10-10

Abstract: The large-scale environmental conditions for thunderstorm development have been studied with 40 selected synoptic processes during 1972-1983. It is shown that the thunderstorms in eastern China can be divided into two types: pre-trough and post-trough. The convective instability before the pre-trough thunderstorms is established primarily by the dry and moist differential advection and that before the post-trough thunderstorms by the cold and warm differential advection. The subsynoptic scale circulation has direct effects on the establishment and release of instability. The pre-trough thunderstorms occur in the overlapping region of the ascending motion in the upper baroclinic waves and the ascending branch of the low-level jet strong wind core circulation and the post-trough thunderstorms occur in the lower convergent region below the ascending branch of the jet-front circulation. The effect of the lower dry and warm lids, the coupling of the low-and upper-level jets and the dry advection in the middle-level jet are the favorable factors for the severe storm formation.