J4 ›› 2005, Vol. 23 ›› Issue (3): 22-25.

• 论文 • 上一篇    下一篇



  1. 1. 北京大学物理学院大气科学系,北京100871:2.民航新疆空中交通管理局气象中心,乌鲁木齐830016
  • 收稿日期:2005-01-30 修回日期:2005-08-10 出版日期:2005-09-30 发布日期:2005-09-30
  • 作者简介:黄海波(ie}。一),男,在读硕士,现在新疆民航空管局气象中心从事机场天气预报工作. E-mail :zwwwymyx@yahoo, com, cn

Application of Potential Vorticity Analysis in Forecasting the Heavy Rain in Xinjiang

HUANG Hai-Bei1,2   

  1. 1.Department of Atmospheric Scicnec,School of Physics,Peking University,  Ycijing 100871 ,China
      2. Meteorological Center of Xinjiang Air "hraffic Administration,Urumqi 830016 , China
  • Received:2005-01-30 Revised:2005-08-10 Online:2005-09-30 Published:2005-09-30



关键词: 新疆, 暴雨, 位涡


Based on the potential vorticity theory,  the relations between the PV(potential vorticity) and  the precipitation or heavy rain occurred in Xinjiang region arc preliminarily studied in this paper through a heavy rain case caused by Central一Asia vortex from July 18 to 20,200通.  "hhc results show that the dry PV in the upper troposphere can well reflect both the cold and warm air flow motions and present the developing features of the weather system, and the PV can trace the cold air flow more clearly than the temperature or height field,which provides a new idea for the study of the cold air flow motion,especially its role in triggering a heavy rain.  (hhe moist PV in the lower troposphere has good relations with the intensity of the precipitation.
It is favourahlc for CHU51nga rain will rain when the moist isentropics arc very stiff which of the can lead to the development of slantwise vor
ticity, and aheavy rail will probably happen in the stiff and dense section of the moist isentropics when MPV<0.

Key words: heavy
probably happen in the stiff and dense section
moist isentropics when MPVGO.
heavy rail, potential vorticity