东亚副热带高空急流区中尺度扰动分布特征及可能机理

陈宪, 钟中, 卢伟, 唐筱之. 东亚副热带高空急流区中尺度扰动分布特征及可能机理[J]. 地球物理学报, 2014, 57(8): 2455-2464, doi: 10.6038/cjg20140807
引用本文: 陈宪, 钟中, 卢伟, 唐筱之. 东亚副热带高空急流区中尺度扰动分布特征及可能机理[J]. 地球物理学报, 2014, 57(8): 2455-2464, doi: 10.6038/cjg20140807
CHEN Xian, ZHONG Zhong, LU Wei, TANG Xiao-Zhi. Distribution characteristics and the possible mechanism of mesoscale disturbance in the subtropical upper-level jet stream over East Asia[J]. Chinese Journal of Geophysics (in Chinese), 2014, 57(8): 2455-2464, doi: 10.6038/cjg20140807
Citation: CHEN Xian, ZHONG Zhong, LU Wei, TANG Xiao-Zhi. Distribution characteristics and the possible mechanism of mesoscale disturbance in the subtropical upper-level jet stream over East Asia[J]. Chinese Journal of Geophysics (in Chinese), 2014, 57(8): 2455-2464, doi: 10.6038/cjg20140807

东亚副热带高空急流区中尺度扰动分布特征及可能机理

详细信息
    作者简介:

    陈宪,男,1989年生,主要从事中尺度气象学研究.E-mail:chenxian_lgdx@yeah.net

    通讯作者: 钟中,E-mail:zhong_zhong@yeah.net
  • 中图分类号: P432

Distribution characteristics and the possible mechanism of mesoscale disturbance in the subtropical upper-level jet stream over East Asia

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  • 东亚副热带高空急流强度变化和天气气候密切相关,本文利用WRF模式输出的高时空分辨率模拟资料研究了东亚副热带高空急流区的中尺度扰动特征,并结合动力学理论,揭示了急流区中尺度扰动产生的可能机制.研究表明,急流轴南侧更容易出现水平尺度为几十公里的高频扰动,这些扰动的时空分布具有波动特征.对高空急流区中出现中尺度扰动区域的拉格朗日Rossby数、Richardson数以及绝对涡度的计算发现,高空急流轴南侧中尺度扰动出现的物理机制与非地转平衡流的不稳定发展有关,并且高空急流强度的大尺度整体变化与急流区中尺度扰动变化的累积效应有关.因此,开展高空急流强度变化规律研究不能忽视其内部中尺度动力过程的作用.
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  • [1]

    Bian J C, Chen H B, Lü D R. 2004. Analysis of characteristics of gravity wave under stratophere by using the high-resolution data of radiosonde observation. Science in China Ser. D Earth Science (in Chinese), 34(8): 748-756.

    [2]

    Chang E K M, Fu Y F. 2002. Interdecadal variations in Northern hemisphere winter storm track intensity. J. Climate, 15: 642-658, doi: 10.1175/1520-0442(2002)015.

    [3]

    Chen C S, Trenberth K E. 1988. Forced planetary waves in the northern hemisphere winter: wave-coupled orographic and thermal forcing. J. Atmos. Sci., 45(4): 682-704, doi: 10.1175/1520-0469(1988)045<0682: FPWITN>2.0.CO;2.

    [4]

    Cheng H H, Zhong Z, Cen J, et al. 2012. A new method of obtaining perturbation vertical profiles in estimating the atmosphere gravity wave parameters. Acta Phys. Sin. (in Chinese), 61(18): 189201-1-189201-9.

    [5]

    Deng S G, Zhong Z, Cheng H H. 2012. Evolution characteristics of gravity-wave parameters in a simulated rainstorm process. Chinese J. Geophys. (in Chinese), 55(6): 1831-1843, doi: 10.6038/j.issn.0001-5733.2012.06.004.

    [6]

    Gao S T, Tao S Y, Ding Y H. 1992. Upper wave-East Asian jet interaction during the period of cold wave outbreak. Chinese Journal of Atmospheric Sciences (in Chinese), 16(6): 718-724, doi: 10.3878/j.issn.1006-9895.1992.06.09.

    [7]

    Garillo A, Ruti P M, Navarra A. 2000. Storm tracks and zonal mean flow variability: a comparison between observed and simulated data. Climate Dynamics, 16(2-3): 219-228, doi: 10.1007/s003820050015PB.

    [8]

    Held I M. 1983. Stationary and quasi-stationary eddies in the extratropical troposphere: theory.//Large-scale Dynamical Processes in the Atmosphere. New York: Academic Press, 127-167.

    [9]

    Hodges R R. 1967. Generation of turbulence in the upper atmosphere by internal gravity waves. J. Geophys. Res., 72(13): 3455-3458, doi: 10.1029/JZ072i013p03455.

    [10]

    Kim J H, Chun H Y. 2010. A Numerical Study of Clear-Air Turbulence (CAT) Encounters over South Korea on 2 April 2007. Journal of Applied Meteorology and Climatology, 49(12): 2381-2403.

    [11]

    Koch S E, Dorian P B. 1988. A mesoscale gravity wave event observed during CCOPE. Part III: Wave environment and probable source mechanisms. Mon. Wea. Rev., 116(12): 2570-2592, doi: 10.1175/1520-0493(1988)116<2570: AMGWEO>2.0.CO;2.

    [12]

    Koch S E, Jamison B D, Lu C, et al. 2005. Turbulence and gravity waves within an upper-Level front. J. Atmos. Sci., 62(11): 3885-3908, doi: 10.1175/JAS3574.1.

    [13]

    Li Z L, Huang F Y. 2008. Gravity wave and inertial instability-possible mechanism of atmospheric turbulence and airplane bumps. Plateau Meteorology (in Chinese), 27(4): 859-865, doi: 1000-0534(2008)04-0859-07.

    [14]

    Liao Q H, Gao S T, Wang H J, et al. 2004. Anomalies of the extratropical westerly jet in the north hemisphere and their impacts on the East Asian summer monsoon climate anomalies. Chinese J. Geophys. (in Chinese), 47(1): 10-18.

    [15]

    Miles J W. 1961. On the stability of heterogeneous shear flows. J. Fluid Mech., 10(4): 496-508.

    [16]

    Ren X J, Zhang Y C, Xiang Y. 2008. Connections between wintertime jet stream variability, oceanic surface heating, and transient eddy activity in the North Pacific. J. Geophys. Res., 113, D21119, doi: 10.1029/2007JD009464.

    [17]

    Rossby C G. 1937. On the mutual adjustment of pressure and velocity distributions in certain simple current systems I. J. Mar. Res., 1: 15-28.

    [18]

    Rossby C G. 1938. On the mutual adjustment of pressure and velocity distributions in certain simple current systems II. J. Mar. Res., 2: 239-263.

    [19]

    Shapiro M A. 1978. Further evidence of the mesoscale and turbulent structure of upper level jet stream-frontal zone systems. Mon. Wea. Rev., 106(8): 1100-1111, doi: 10.1175/1520-0493(1978)106.

    [20]

    Shou S W. 1993. Mesoscale Synoptic Dynamics (in Chinese). Beijing: Meteorological Press.

    [21]

    Skamarock W C, Klemp J B, Dudhia J, et al. 2008. A description of the advanced research WRF version 3. NCAR Tech. Note NCAR/TN-475+STR, 113-117.

    [22]

    Torrence C, Compo G P. 1998. A practical guide to wavelet analysis. Bull. Amer. Met. Soc., 79(1): 61-78, doi: 10.1175/1520-0477(1998)07.

    [23]

    Uccellini L W, Koch S E. 1987. The synoptic setting and possible energy sources for mesoscale wave disturbance. Mon. Wea. Rev., 115(3): 721-729, doi: 10.1175/1520-0493(1987)115.

    [24]

    Zhang F Q, Koch S E, Davis C A, et al. 2000. A survey of unbalanced flow diagnostics and their application. Adv. Atmos. Sci., 17(2): 165-183, doi: 10.1007/s00376-000-0001-1.

    [25]

    Zhang S D, Yi F. 2005. A statistical study of gravity waves from radiosonde observations at Wuhan (30°N, 114°E) China. Annales Geographysicae, 23: 665-673, doi: 10.5194/angeo-23-665-2005.

    [26]

    Zhong Z, Yuan H H, Li J, et al. 2010. Characteristics of the meso-scale perturbations and momentum transportation associated with an intensification process of upper-level jet. Sci. Meteor. Sin. (in Chinese), 30(5): 639-645.

    [27]

    Zuo J Q, Ren H L, Li W J, et al. 2009. Intraseasonal characteristics of the water vapor transport associated with the low-frequency rainfall regimes over Southern China in summer. Chinese J. Geophys. (in Chinese), 52(9): 2210-2221, doi: 10.3969/j.issn.0001-5733.2009.09.004.

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出版历程
收稿日期:  2013-10-22
修回日期:  2014-05-05
上线日期:  2014-08-20

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