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西北涡    
相关语句
  northwest vortex
    Diagnostic Analysis of Moist Potential Vorticity for Northwest Vortex Heavy Rain
    西北涡暴雨的湿位涡诊断分析
短句来源
    And it is South China Sea or the Bay of Bengal in northwest vortex zonal circulation and east-Mongolia cold vortex meridional circulation.
    纬向型西北涡和经向型东蒙冷涡的水汽源地主要是南海和孟加拉湾。
短句来源
    Three types of low vortex (Mongolia vortex,Northwest vortex and Southwest vortex)producing heavy rain at Huairou County in Beijing are analysed.
    对产生怀柔县暴雨的三类低涡(蒙古低涡、西北涡和西南涡)进行了统计分析。
短句来源
    The vapour source is the Yellow Sea or the East China Sea in northwest vortex meridional circulation.
    经向型西北涡的水汽源地主要是黄海和东海;
短句来源
    And it is the South China Sea or the Bay of Bengal in northwest vortex zonal circulation and east-Mongolia cold vortex meridional circulation.
    纬向型西北涡和经向型东蒙冷涡的水汽源地主要是南海和孟加拉湾。
短句来源
  nw vortex
    NUMERICAL EXPERIMENTS ON AN NW VORTEX IN ITS FORMATION AND MOVEMENT
    一次西北涡生成移动过程的数值试验
短句来源
  nw vortex
    NUMERICAL EXPERIMENTS ON AN NW VORTEX IN ITS FORMATION AND MOVEMENT
    一次西北涡生成移动过程的数值试验
短句来源
  northwest vortex
    Diagnostic Analysis of Moist Potential Vorticity for Northwest Vortex Heavy Rain
    西北涡暴雨的湿位涡诊断分析
短句来源
    And it is South China Sea or the Bay of Bengal in northwest vortex zonal circulation and east-Mongolia cold vortex meridional circulation.
    纬向型西北涡和经向型东蒙冷涡的水汽源地主要是南海和孟加拉湾。
短句来源
    Three types of low vortex (Mongolia vortex,Northwest vortex and Southwest vortex)producing heavy rain at Huairou County in Beijing are analysed.
    对产生怀柔县暴雨的三类低涡(蒙古低涡、西北涡和西南涡)进行了统计分析。
短句来源
    The vapour source is the Yellow Sea or the East China Sea in northwest vortex meridional circulation.
    经向型西北涡的水汽源地主要是黄海和东海;
短句来源
    And it is the South China Sea or the Bay of Bengal in northwest vortex zonal circulation and east-Mongolia cold vortex meridional circulation.
    纬向型西北涡和经向型东蒙冷涡的水汽源地主要是南海和孟加拉湾。
短句来源
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In this paper,a case study of the process of a severe rain storm in North China by two meso—α vortices has been made. It is found that the heavy rain has been caused by the interaction be-tween a meso—α vortex coming from northwestern China and a meso—α vortex from southwest-ern China located in the same longtitude. It is also found that the inertia gravitational wave insta-bility and condition symmatric instability may have a contribution to the suddenly heavy rainfallin the north of North China plain.

本文分析了华北地区初夏一次罕见暴雨过程。指出,这次暴雨过程是西北涡和西南涡在同一经度上连接并相互作用造成的;重力惯性波不稳定和条件性对称不稳定对这次过程在华北平原北部降水骤增可能有一定的作用。

By use of the transplanted mesoscale model(MM4)from PSU/NCAR,a strong rainfall eventduring 26—27 June 1986 in Beijin-Tianjin-Hebei area is simulated.The results show that the re-duction in wind speed near the convective region in upper levels and passage through the rainfallcenter of the intensifying LLJ played crucial role in the event.The mergence of meso-low withconvergence region ahead of the LLJ,feedback of latent heat release,and fluxes of heat and mois-ture from the underlying surface were also responsible...

By use of the transplanted mesoscale model(MM4)from PSU/NCAR,a strong rainfall eventduring 26—27 June 1986 in Beijin-Tianjin-Hebei area is simulated.The results show that the re-duction in wind speed near the convective region in upper levels and passage through the rainfallcenter of the intensifying LLJ played crucial role in the event.The mergence of meso-low withconvergence region ahead of the LLJ,feedback of latent heat release,and fluxes of heat and mois-ture from the underlying surface were also responsible for the event whereas the northwest lowdid not contribute much to precipitation.

用移植到 DPS-7机上的美国 PSU/NCAR 中尺度模式 MM4对1986年6月26—27日京津冀地区大暴雨过程进行了数值试验。结果表明:高空对流区附近风速减小和低空急流核加强并通过暴雨区对暴雨起决定性的影响;潜热的反馈作用、下垫面提供的热量和水汽通量对降水有重要影响。大陆以东洋面的水汽供应以及西北涡在这次暴雨过程中的作用不显著。另外,采用显式降水方案后,预报的降水落区、中心位置和量值均有所改进。

Three types of low vortex (Mongolia vortex,Northwest vortex and Southwest vortex)producing heavy rain at Huairou County in Beijing are analysed.The results show that there are same unstability and vapour condition in three low vortexs,but vertical motion condition are different.It is helpful to forecasting heavy rain.

对产生怀柔县暴雨的三类低涡(蒙古低涡、西北涡和西南涡)进行了统计分析。对各类低涡暴雨的个例对比分析发现,三类低涡暴雨有相同的不稳定度和水汽条件,但垂直运动条件则不同,这些为暴雨预报提供了依据。

 
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