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Volume 21 Issue 6

Nov.  2004

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2004 >  21(6): 976-988

A Diagnostic Study of Record Heavy Rain in Twin Cities Islāmābad-Rāwalpindi

  • 1.

    Meteorological Service of Pakistan, P. O. Box 1214, Islāmābad-Pakistan;Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing,100029;Graduate School, Chinese Academy of Sciences, Beijing,100039,Meteorological Service of Pakistan, P. O. Box 1214, Islāmābad-Pakistan,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing,100029,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing,100029


doi: 10.1007/BF02915599

  • Using surface and NCEP reanalysis data along with radar and satellite images, diagnosis has been July 2001. It has been revealed that the sudden evolution of this meso-scale severe weather system was the direct result of strong surface convection in moist and unstable lower layers of the atmosphere. The subsequent rapid development was the combined effect of the presence of the mid latitude westerly's trough in the north and moisture feeding through monsoon flow along the Himalayas and also the direct southwesterly current from the Arabian Sea. After the westward shifting of the Sub-Tropical High (STH) from the north of India, the strong divergence zone on its eastern edge contributed positively to the development of upward motion. Initially the convective systems moved towards the south and then southeastward following the steering current in the middle troposphere. Based on these analyses, the physical model of the sudden record heavy rainfall has been proposed and a comparison between the heavy rainfall in this case and one in China has been conducted.
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    [13] WANG Shuzhou, YU Entao, WANG Huijun, 2012: A Simulation Study of a Heavy Rainfall Process over the Yangtze River Valley Using the Two-Way Nesting Approach, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 731-743.  doi: 10.1007/s00376-012-1176-y
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    • Manuscript History

    Manuscript received: 10 November 2004
    Manuscript revised: 10 November 2004
    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

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    A Diagnostic Study of Record Heavy Rain in Twin Cities Islāmābad-Rāwalpindi

    • 1. Meteorological Service of Pakistan, P. O. Box 1214, Islāmābad-Pakistan;Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing,100029;Graduate School, Chinese Academy of Sciences, Beijing,100039,Meteorological Service of Pakistan, P. O. Box 1214, Islāmābad-Pakistan,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing,100029,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing,100029
    • Manuscript received: 2004-11-10
    • Manuscript revised: 2004-11-10

    Abstract: Using surface and NCEP reanalysis data along with radar and satellite images, diagnosis has been July 2001. It has been revealed that the sudden evolution of this meso-scale severe weather system was the direct result of strong surface convection in moist and unstable lower layers of the atmosphere. The subsequent rapid development was the combined effect of the presence of the mid latitude westerly's trough in the north and moisture feeding through monsoon flow along the Himalayas and also the direct southwesterly current from the Arabian Sea. After the westward shifting of the Sub-Tropical High (STH) from the north of India, the strong divergence zone on its eastern edge contributed positively to the development of upward motion. Initially the convective systems moved towards the south and then southeastward following the steering current in the middle troposphere. Based on these analyses, the physical model of the sudden record heavy rainfall has been proposed and a comparison between the heavy rainfall in this case and one in China has been conducted.

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