Vol.15, NO.5, 2004
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Jiang Xuegong, Shen Jianguo, Liu Jingtao, et al. Observational and numerical study of topography influence on Mongolia cyclogenesis. J Appl Meteor Sci, 2004, 15(5): 601-611.
Citation: Jiang Xuegong, Shen Jianguo, Liu Jingtao, et al. Observational and numerical study of topography influence on Mongolia cyclogenesis. J Appl Meteor Sci, 2004, 15(5): 601-611.
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OBSERVATIONAL AND NUMERICAL STUDY OF TOPOGRAPHY INFLUENCE ON MONGOLIA CYCLOGENESIS

  • 1.

    Inner Mongolia Meteorological Observatory, Huhhot 010051

  • 2.

    Inner Mongolia Meteorological Bureau, Huhhot 010051

  • 3.

    Department of Atmospheric Sciences, Pek ing University, Beijing, 100871

  • 4.

    Beijing Urban Meteorological Institute, Beijing 100089

  • Received Date: 2003-03-12
  • Rev Recd Date: 2003-08-18
  • Publish Date: 2004-10-31
    Abstract
  • Observational study and numerical simulation are conducted on the topography influences on the Mongolia cyclogenesis. The results show that the Mongolia cyclogenesis can be divided into two processes, namely triggering process and development process, according to the appearance of surface cyclonic cold front. In the development process, the baroclinicity is the main forcing mechanism causing the development of Mongolia cyclone. The topography influences focus on: 1) The Altai-Sayan complex mountains retarded the cold air in the lower troposphere so that the Mongolia cyclone developed slowly before the cold air completely toughed the lee side and after that it developed explosively. 2) The baroclinicity was enhanced by the complex mountains (steepened the isentropic surface), which made the enhancement of vorticity concentrated downward at the low troposphere and so reinforced the development of surface cyclone. 3) The complex mountains affected the position, range and strength of the lowel level jet. In the upper troposphere the isentropic potential vorticity (IPV) advection contributed to the cyclogenesis and its effect was limited.
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  • [1]
    Chen S J, Egger J, Han W. Altai-Sayan lee cyclogenesis: A case study. Beitr Phys Atmos, 1992, 65: 13-22. http://cat.inist.fr/?aModele=afficheN&cpsidt=5622729
    [2]
    Han W, Chen S J, Egger J. Altai-Sayan lee cyclogenesis: Numerical simulations. Meteorl Atmos Phys, 1995, 55: 125-134. doi:  10.1007/BF01029822
    [3]
    Buzzi A, Tibaldi S. Cyclogenesis in the lee of the Alp: A case study. Quart J Roy Meter Soc, 1978, 104: 271-287. doi:  10.1002/(ISSN)1477-870X
    [4]
    Zupanski, Mcginley J A. Numerical analysis of the influence of jets, fronts, and mountain on Alpine lee cyclogenesis. Mon Wea Rev, 1989, 117: 154-176. doi:  10.1175/1520-0493(1989)117<0154:NAOTIO>2.0.CO;2
    [5]
    Mattocks C, Bleck R. Jet streak dynamics and geostrophic adjustment processes during the initial stages of lee cyclogenesis. Mon Wea Rev, 1986, 114: 2033-2056. doi:  10.1175/1520-0493(1986)114<2033:JSDAGA>2.0.CO;2
    [6]
    Bleck R, Mattocks C. A preliminary analysis of the role of potential vorticity in Alpine lee cyclogenesis. Contrib Phys, 1984, 11: 38-69. http://cat.inist.fr/images/Refdoc-fond.jpg
    [7]
    Grell G A, Dudhia J, Stauffer D R. A description of the fifth-generation Penn State/NCAR mesoscale model (MM5). NCAR/TN-398+STR. 1995.
    [8]
    吴国雄, 蔡雅萍, 唐晓晴.湿位涡和倾斜涡度发展.气象学报, 1995, 53: 387-405. http://www.cnki.com.cn/Article/CJFDTOTAL-QXXB504.001.htm
    [9]
    吴国雄, 刘还珠.全型涡度倾向方程和倾斜涡度发展.气象学报, 1999, 57: 1-15. http://www.cnki.com.cn/Article/CJFDTOTAL-QXXB901.000.htm
    [10]
    吴国雄.全型涡度方程和经典涡度方程的比较.气象学报, 2001, 59: 384-392. http://www.cnki.com.cn/Article/CJFDTOTAL-QXXB200104000.htm
    [11]
    Thorpe A J. Diagnosis of balanced vortex structure using potential vorticity. Jour Atmos Sci, 1985, 42: 397-406. doi:  10.1175/1520-0469(1985)042<0397:DOBVSU>2.0.CO;2
    [12]
    沈建国.爆发性蒙古气旋若干统计特征.内蒙古气象, 1993, (4): 5-12.
    [13]
    Karyampudi MV, Kaplan M L, Koch S E, et al. The influence of the Rocky Mountains on the 13-14 April 1986 severe weather outbreak. Part Ι: Mesoscale lee cyclogenesis and its relationship to severe weather and dust storms. Mon Wea Rev, 1995, 123: 1394-1422. doi:  10.1175/1520-0493(1995)123<1394:TIOTRM>2.0.CO;2
    [14]
    Mcginley J A, Goerss J S. Effect of terrain height and blocking initialization on numerical simulation of Alpine lee cyclogenesis. Mon Wea Rev, 1986, 114: 1578-1590. doi:  10.1175/1520-0493(1986)114<1578:EOTHAB>2.0.CO;2
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    • Received : 2003-03-12
    • Accepted : 2003-08-18
    • Published : 2004-10-31
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