岛屿地形对极地低压和热带气旋发展的线性理论模型和观测资料分析

李子良; 傅刚; 郭敬天; 端义宏; 张美根

doi:10.3879/j.issn.1000-0887.2009.10.007

岛屿地形对极地低压和热带气旋发展的线性理论模型和观测资料分析

doi: 10.3879/j.issn.1000-0887.2009.10.007

李子良^1,2,3,
傅刚^1,2,4,
郭敬天^1,6,
端义宏^2,5,
张美根⁴

中国海洋大学海洋气象系,山东青岛 266100; 2.上海台风研究所,上海 200030;

基金项目: 国家自然科学基金资助项目(40775069;40675060);上海台风研究所开放基金资助项目(2006STB03);卫星海洋国家重点实验室开放基金资助项目(SOED0904);中国科技部基金资助项目(2009CB421504;2006AA09Z151);中国气象局基金资助项目(GYHY200706031);国家海洋局基金资助项目(908020310)

详细信息

作者简介:
李子良(1976- ),男,湖南人,博士(联系人.E-mail:liziliang@ouc.edu.cn).

中图分类号: P431
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- 被引次数: 0
出版历程
- 收稿日期: 2008-10-25
- 修回日期: 2009-09-06
- 刊出日期: 2009-10-15

Topographic Effects on Polar Low and Tropical Cyclone Development in a Simple Theoretical Model

Department of Marine Meteorology Ocean University of China, Qingdao, Shandong 266100, P. R. China;
Shanghai Typhoon Institute, Shanghai 200030, P. R. China;

摘要

摘要: 基于轴对称和热成风平衡系统，研究了柱坐标系中的线性涡旋动力学方程组的初值问题，分析了岛屿地形对极地低压和热带气旋类涡旋的影响，同时分析了感热和潜热，摩擦和地形在极地低压和热带气旋类涡旋的强度和结构演变中的作用．通过对地形影响下的流体运动的径向和法向速度，以及垂直速度和流体运动的不稳定增长率的分析指出，流动和地形的相互作用对极地低压和热带气旋类系统的强度和结构演变起着非常重要的作用．在岛屿山脉地形的迎风坡上，地形强迫的径向入流气流和垂直上升运动有利于极地低压和热带气旋类涡旋的加强和发展，有利于加强流体的不稳定增长率．但是，在山脉地形的背风侧，地形强迫的径向入流气流和垂直下沉运动，有利于极地低压和热带气旋类涡旋的减弱和消亡，有利于减弱流体的不稳定增长率．同时，基于气象观测资料分析了2003年12月19日发生在日本海上的一次极地低压生消和演变过程，所得到的观测事实和理论分析具有较好的一致性，并在此基础上讨论了极地低压和台风涡旋，斜压背风涡旋和斜压锢囚涡旋的生消机制和演变特征的异同．
- 岛屿地形 /
- 解析研究 /
- 极地低压 /
- 热带气旋
Abstract: The polar low and tropical cyclone type vortices over topography are assumed to beaxial-symmetrical and thermal wind balanced systems, which are solved as aninitial value problem of linearized vortex equation set in cylindrical coord inates. The roles of sensible and latent heating, friction and topography on the structure and intensification of polar low and tropical cyclone type vortices were an alyzed. The radial velocity, vertical velocity, azmiuthal velocity and the unstable growth rate including the topography effects are obtained. It is shown that the in teraction between flow and topography plays a significantrole for the structure and intens ification of polar low and tropical cyclone system. Analys is of the topography term indicate that in the up-slope side of the mountain, the radial in flow and the verticalascent forced by the mountain will in tensify the polar low and tropical cyclone type vortex and increase the unstable growthrate. However, in the lee side of the mountain, the radial inflow and the vertical descent forced by the mountain will weaken the polar low and tropical cyclone type vortex and decrease the unstable growth rate of polar low and tropical cyclone system. In addition, the evolutionary process and spatial structure of the polar low observed over the Japan Sea on 19 December 2003 were investigated by using observational data to verify this theoretical result.
- topography /
- analytical solutions /
- polar low /
- tropical cyclone

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参考文献(26)

[1]	Harley D G. Frontal contour analysis of a “polar low”[J]. Meteor Mag, 1960, 89: 146-147.
[2]	Fu G, Niino H, Kimura R, et al. A polar low over the Japan Sea on 21 January 1997. Part I: Observational analysis[J]. Mon Wea Rev, 2004, 132(7):1537-1551. doi: 10.1175/1520-0493(2004)132<1537:APLOTJ>2.0.CO;2
[3]	Mansfield D A. Polar lows: the development of baroclinic disturbances in cold air outbreaks[J]. Q J Roy Meteorol Soc, 1974, 100(426): 541-554. doi: 10.1002/qj.49710042604
[4]	Rasmussen E. The polar low as an extratropical CISK-disturbance[J]. Q J R Meteorol Soc, 1979, 105(445): 531-549. doi: 10.1002/qj.49710544504
[5]	Shapiro M A, Fedor L S, Hampel T. Research aircraft measurements of a polar low over the Norwegian Sea[J]. Tellus A, 1987, 39(4): 272-306.
[6]	Ninomiya K. Polar/comma-cloud lows over the Japan Sea and the northwestern Pacific in winter[J]. J Meteor Soc Japan, 1989, 67(1):83-97.
[7]	Tsuboki K, Wakahama G. Mesoscale cyclongenesis in winter monsoon air streams, quasi-geostrophic baroclinic instability as a mechanism of the cyclogenesis off the west coast of Hokkaido Island[J]. J Meteor Soc Japan, 1992, 70(1):77-93.
[8]	Lee T Y, Park Y Y, Lin Y L. A numerical modeling study of mesoscale cyclogenesis to the east of Korean Peninsula[J]. Mon Wea Rev, 1998, 126(9): 2305-2329. doi: 10.1175/1520-0493(1998)126<2305:ANMSOM>2.0.CO;2
[9]	Fu G. Polar Lows: Intense Cyclones in Winter[M]. Beijing: China Meteorology Press, 2001.
[10]	Yanase W, Niino H, Saito K. High-resolution numerical simulation of a polar low[J]. Geophys Res Letters, 2002, 29(14):1658-1662. doi: 10.1029/2002GL014736
[11]	Rasmussen E A, Turner J. Polar Lows: Meso-scale Weather Systems in the Polar Region[M]. Cambridge: Cambridge University Press, 2003.
[12]	Wilhelmsen K. Climatological study of gale-producing polar lows near Norway[J]. Tellus A, 1985, 37: 451-459.
[13]	Eliassen A. Slow thermally or frictionally controlled meridional circulation in a circular vortex[J]. Astrophys Norv, 1951, 5(2):19-60.
[14]	Chaney J G，Eliassen A. On the growth of the hurricane depression[J]. J Atmos Sci, 1964, 21(1):68-75. doi: 10.1175/1520-0469(1964)021<0068:OTGOTH>2.0.CO;2
[15]	Ooyama K. A dynamic model for the study of tropical cyclone development[J]. Geofys Int, 1964, 4: 187-198.
[16]	Craig G C, Cray S L. CISK or WISHE as the mechanism for tropical cyclone intensification[J]. J Atmos Sci, 1996, 53(23): 3528-3540. doi: 10.1175/1520-0469(1996)053<3528:COWATM>2.0.CO;2
[17]	Gray S L，Craig G C. A simple theoretical model for the intensification of tropical cyclones and polar lows[J]. Q J R Meteorol Soc, 1998, 124(547): 919-947. doi: 10.1002/qj.49712454713
[18]	Emanuel K A. An air-sea interaction theory for tropical cyclones. Part I: Steady state maintenance[J]. J Atmos Sci, 1986, 43(6):585-604. doi: 10.1175/1520-0469(1986)043<0585:AASITF>2.0.CO;2
[19]	李子良. 三维分层流动过双山脉地形激发的大气船舶重力波动力学理论和数值试验[J]. 地球物理学报, 2007, 50(1): 34-42.
[20]	Li Z L. Solitary wave and periodic wave solutions for the thermally forced gravity waves in atmosphere[J]. J Phys A: Math Theor, 2008, 41(14):145-206.
[21]	Li Z L, Fu G, Chen J. Periodic structures of atmospheric internal gravity wave under the influence of air-sea interaction[J]. Chaos Solitons and Fractals, 2009, 40(2):530-537. doi: 10.1016/j.chaos.2007.08.002
[22]	Emanuel K A, Neelin J D, Bretherton C S. On large scale circulations in convecting atmospheres[J]. Q J R Meteorol Soc, 1994, 120(519):1111-1144. doi: 10.1002/qj.49712051902
[23]	Guo J T, Fu G, Li Z L, et al. Analyses and numerical modeling of a polar low over the Japan Sea on 19 December 2003[J]. Atmospheric Research, 2007, 85(3/4):395-412. doi: 10.1016/j.atmosres.2007.02.007
[24]	Reale O, Atlas R. Tropical cyclone-like vortices in the extratropics:observational evidence and synoptic analysis[J]. Weather and Forecasting, 2001, 63(2):7-34.
[25]	Martin R, Moore G.W.K. Transition of a synoptic system to a polar low via interaction with the orography of Greenland[J]. Tellus A, 2006, 58(2): 236-253. doi: 10.1111/j.1600-0870.2005.00169.x
[26]	Moore G W K, Reader M C, York J, et al. Polar lows in the Labrador Sea: a case study[J]. Tellus A, 1996, 48(1): 17-40.〖ZK)〗 doi: 10.1034/j.1600-0870.1996.00002.x