SIMULATION STUDY OF THE EFFECT ON COLD SURGE OF THE QINGHAI-XIZANG PLATEAU AS A HUGE OROGRAPHY*

+ Author Affiliations + Find other works by these authors
  • Funds:

    * National Natural Science Foundation of China under grant 4870263;partly by the State Meteorological Administration from Monsoon Research Funds.

PDF

  • Using a limited-area P-σ incorporated coordinate five-level primitive equation model fed with the ECMWF 5°×5°grid data,a simulation is made of a large-scale cold surge of late December 1982.Results show that the Qinghai-Xizang Plateau has no profound thermal but dynamic effect on the East-Asian winter monsoon that forces cold air to go southwards by its east side,exciting Kelvin waves behind the cold front to result in the maximum NE wind.Besides,gravitational waves independent of the Plateau occur ahead of the front advancing towards the south.They may be due to the excitation involved in the front itself.The cold surge is propagated under the Hadley cell,making it strengthened and moved southwards.
  • 加载中
  • 加载中
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

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

SIMULATION STUDY OF THE EFFECT ON COLD SURGE OF THE QINGHAI-XIZANG PLATEAU AS A HUGE OROGRAPHY*

  • 1. Nanjing Institute of Meteorology,Nanjing;
    Nanjing Institute of Meteorology,Nanjing
Funds: * National Natural Science Foundation of China under grant 4870263;partly by the State Meteorological Administration from Monsoon Research Funds.

Abstract: Using a limited-area P-σ incorporated coordinate five-level primitive equation model fed with the ECMWF 5°×5°grid data,a simulation is made of a large-scale cold surge of late December 1982.Results show that the Qinghai-Xizang Plateau has no profound thermal but dynamic effect on the East-Asian winter monsoon that forces cold air to go southwards by its east side,exciting Kelvin waves behind the cold front to result in the maximum NE wind.Besides,gravitational waves independent of the Plateau occur ahead of the front advancing towards the south.They may be due to the excitation involved in the front itself.The cold surge is propagated under the Hadley cell,making it strengthened and moved southwards.

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return