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大气科学  2013 

钟形地形动力抬升和重力波传播与地形云和降水形成关系研究

DOI: 10.3878/j.issn.1006-9895.2012.12114

Keywords: 湿条件不稳定层流,地形云和降水,地形重力波传播,北京

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Abstract:

地形云和降水过程在区域水循环、水资源、生态环境及气候变化中具有十分重要的作用。本文利用中尺度数值模式WRF数值模拟试验,以及通过引入表示大气层流速度、层结稳定度和地形特征的关系参数——湿Froude数(Fw),研究了北京2009年5月1日湿条件不稳定大气层结下,地形云和降水形成过程与地形动力抬升和地形重力波传播之间的关系及形成机理。研究表明,在地形最大高度2km、半宽10km的条件下,层流速度从2.5m/s逐步增加到25m/s时,对应的湿Fw数从0.19增加到1.81。当Fw≤1时,地形的阻挡起主要作用,由地形抬升形成的地形云主要产生在迎风坡一侧。地形重力波主要产生在迎风坡,并向上游传播,先形成层状云,最后演变为准稳定浅对流波状云。最大降水主要发生在紧靠山顶的迎风坡一侧,但当Fw很小时,地形云不产生降水。当Fw>1时,地形抬升形成的云主要发生在山顶附近,而地形重力波主要形成在背风坡,并向下游方向传播,形成准稳定波状云。最大降水主要产生在紧靠山顶的背风坡一侧。另外,在弱湿条件不稳定大气层流下,地形降水主要由地形动力抬升造成的暖云微物理过程产生,地形重力波形成的波状云几乎不产生降水。

References

[1]  Baines P G. 1995. Topographic Effects in Stratified Flows [M]. Cambridge: Cambridge University Press, 482 pp.
[2]  Bergeron T. 1968. Studies of the oreigenic effects on the areal fine structure of rainfall distribution [R]. Meteorological Institute, Uppsala Univ., Report No. 6. 6pp.
[3]  Browning K A, Hill F F, Pardoe C W. 1974. Structure and mechanism of precipitation and the effect of orography in a wintertime warm sector [J]. Quart. J. Roy. Meteor. Soc., 100: 309-330.
[4]  Chu C M, Lin Y L. 2000. Effects of orography on the generation and propagation of mesoscale convective systems in a two-dimensional conditionally unstable flow [J]. J. Atoms. Sci., 57: 3817-3837.
[5]  Cooper W A, Marwitz J D. 1980. Winter storms over the San Juan Mountains. Part III: Seeding potential [J]. J. Appl. Meteor., 19: 942-949.
[6]  Cooper W A, Saunders C P R. 1980. Winter storms over the San Juan Mountains. Part II: Microphysical processes [J]. J. Appl. Meteor., 19: 927-941.
[7]  Cotton W R, Anthes R A. 1989. Storm and Cloud Dynamic [M]. Burlington, San Diego, London: Academic Press, 855-919.
[8]  Colle B A. 2004. Sensitivity of orographic precipitation to changing ambient conditions and terrain geometries: An idealized modeling perspective [J]. J. Atmos. Sci., 61: 588-606.
[9]  Chen S H, Lin Y L. 2005a. Orographic effects on a conditionally unstable flow over an idealized three-dimensional mesoscale mountain [J]. Meteor. Atmos. Phys., 88: 1-21.
[10]  Chen S H, Lin Y L. 2005b. Effects of moist Froude number and CAPE on a conditionally unstable flow over a mesoscale mountain ridge [J]. J. Atmos. Sci., 62: 331-350.
[11]  陈添宇, 郑国光, 陈跃等. 2010. 祁连山夏季西南气流背景下地形云形成和演化的观测研究 [J]. 高原气象, 29 (1): 152-163. Chen Tianyu, Zheng Guoguang, Chen Yue, et al. 2010. Observational experiment on generation and development of summer orographic cloud during the southwest air current pattern in Qilian Mountain [J]. Plateau Meteorology (in Chinese), 29 (1): 152-163.
[12]  陈乾, 陈添宇, 肖红斌. 2010. 祁连山区夏季降水过程天气分析 [J]. 气象科技, 38 (1): 26-31. Chen Qian, Chen Tianyu, Xiao Hongbin. 2010. Synoptic analysis of summer precipitation over Qilian Mountains [J]. Meteorological Science and Technology (in Chinese), 38 (1): 26-31.
[13]  Davies H C, Turner R E. 1977. Updating prediction models by dynamical relaxation: An examination of the technique [J]. Quart. J. Roy. Meteor. Soc., 103: 225-245.
[14]  Douglas C K M, Glasspoole M J. 1947. Meteorological conditions in heavy orographic rainfall in the British Isles [J]. Quart. J. Roy. Meteor. Soc., 73: 11-38.
[15]  Durran D R, Klemp J B. 1986. A compressible model for the simulation of moist mountain waves [J]. Mon. Wea. Rev., 111: 2341-2361.
[16]  Fraser A B, Easter R C, Hobbs P V. 1973. A theoretical study of the flow of air and fallout of solid precipitation over mountainous terrain. Part I: Airflow model [J]. J. Atmos. Sci., 30: 801-812.
[17]  傅抱璞. 1992.地形和海拔高度对降水的影响 [J].地理学报,47(4): 302-314. Fu Baopu. 1992. The effects of topography and elevation on precipitation [J]. Acta Geographica Sinica (in Chinese),47(4): 302-314.
[18]  Hong S S, Huang I C. 1996. Effects of topography and atmospheric stability on upstream heavy rainfall during Mei-Yu season [C]// Proc. Fifth National Conf. on Atmospheric Science. Taipei, Taiwan: National Science Council, 580-585.
[19]  Jiang Q F. 2003. Moist dynamics and orographic precipitation [J]. Tellus, 55: 301-316.
[20]  Jou B J. 1997. Atlas of Radar Images of Mesoscale Convective Systems in the Taiwan Mei-Yu Season [C]// Department of Atmospheric Science. Taiwan: National Taiwan University, 144 pp.
[21]  Leopold L B. 1949. The interaction of trade wind and sea breeze, Hawaii [J]. J. Meteor., 6: 312-320.
[22]  刘卫国, 刘奇骏. 2007. 祁连山夏季地形云结构和云微物理过程的模拟研究 (II): 云微物理过程和地形影响 [J]. 高原气象, 26 (1): 16-29. Liu Weiguo, Liu Qijun. 2007. The numerical simulation of orographic cloud structure and cloud microphysical processes in Qilian Mountains in summer. Part (II): Cloud microphysical processes and orographic influence [J]. Plateau Meteorology (in Chinese), 26 (1): 16-29.
[23]  Marwitz J D. 1980. Winter storms over the San Juan Mountains. Part I: Dynamical processes [J]. J. Appl. Meteor., 19: 913-926.
[24]  Mellor G L, Yamada T. 1982. Development of a turbulence closure model for geophysical fluid problems [J]. Reviews of Geophysics and Space Physics, 20: 851-875.
[25]  Meyers M P, Cotton W R. 1992. Evaluation of the potential for wintertime quantitative precipitation forecasting over mountainous terrain with an explicit cloud model. Part I: Two dimension sensitivity experiments [J]. J. Appl. Meteor., 31: 26-50.
[26]  Muhlbauer A, Lohmann U. 2008. Sensitivity studies of the role of aerosols in warm-phase orographic precipitation in different dynamical flow regimes [J]. J. Atmos. Sci., 65: 2522-2542.
[27]  Pierrehumbert R T, Wyman B. 1985. Upstream effects of mesoscale mountains [J]. J. Atmos. Sci., 42: 977-1003.
[28]  Peterson T C, Grant L O, Cotton W R, et al. 1991. The effect of decoupled low-level flow on winter orographic clouds and precipitation in the Yampa River Valley [J]. J. Appl. Meteor., 30: 368-386.
[29]  Rasmussen R M, Smolarkiewicz P K. 1993. On the dynamics of Hawaiian cloud bands: III. Local aspects. [J]. J. Atmos. Sci., 50: 1560-1572.
[30]  Robichaud A J, Austin G L. 1988. On the modelling of warm orographic rain by the seeder-feeder mechanism [J]. Quart. J. Roy. Meteor. Soc., 114: 967-988.
[31]  Rotunno R, Ferretti R. 2003. Orographic effects on rainfall in MAP cases IOP 2b and IOP 8 [J]. J. Roy. Meteor. Soc., 129: 373-390.
[32]  邵元亭. 2009. 祁连山地形云的观测和模拟个例研究 [D]. 中国气象科学研究院硕士学位论文, 72pp. Shao Yuanting. 2009. Observational and simulation study on structure of cloud in Qilian Mountains [D]. M. S. thesis (in Chinese), Chinese Academy of Meteorological Sciences, 72pp.
[33]  Smith R B. 1982. A differential model of thermal advection [J]. Mon. Wea. Rev., 110: 306-309.
[34]  Smolarkiewicz P K, Rasmussen R M, Clark T L. 1988. On the dynamics of Hawaiian cloud bands: Island forcing [J]. J. Atmos. Sci., 45: 1872-1905.
[35]  Smolarkiewicz P K, Rotunno R. 1989. Low Froude number flow past three-dimensional obstacles. Part I: Baroclinically generated lee vortices [J]. J. Atmos. Sci., 46: 1154-1164.
[36]  Smolarkiewicz P K, Rotunno R. 1990. Low Froude number flow past three dimensional obstacles. Part II: Upwind flow reversal zone [J]. J. Atmos. Sci., 47: 1498-1511.
[37]  Skamarock W C, Klemp J B, Dudhia J. et al. 2005. A description of the advanced research WRF Version 2. [G]. NCAR Tech. Boulder, Colorado, USA, 101pp.
[38]  孙继松. 2005. 气流的垂直分布对地形雨落区的影响 [J]. 高原气象, 24(1): 62-69. Sun Jisong. 2005. The effects of vertical distribution of the lower level flow on precipitation location [J]. Plateau Meteorology (in Chinese), 24(1): 62-69.
[39]  孙晶,楼小凤,胡志晋. 2009.祁连山冬季降雪个例模拟分析(I): 降雪过程和地形影响 [J].高原气象,28(3): 485-495. Sun Jing,Lou Xiaofeng,Hu Zhijin. 2009. Numerical simulation of snowfall in winter Qilian Mountains. Part (I): Snowfall process and orographic influence [J]. Plateau Meteorology (in Chinese),28(3): 485-495.
[40]  Song Y H, Kyo S S L, Yong H L, et al. 2010. Evaluation of the WRF double-moment 6-class microphysics scheme for precipitating convection [J]. Adv. Meteor., 2010: 1-10, doi:10.1155/2010/707253.
[41]  Tucker D F, Crook N A. 2005. Flow over heated terrain. Part II: Generation of convective precipitation [J]. Mon. Wea. Rev., 133: 2565-2582.
[42]  王迎春. 1993. 北京地形对强对流天气影响的数值模拟 [J]. 北京气象, (3): 10-13. Wang Yingchun. 1993. Influences of topography on the strong convective weather and precipitation process in Beijing [J]. Beijing Meteorology (in Chinese), (3): 10-13.
[43]  徐国强, 胡欣, 苏华. 1999. 太行山地形对“96-8”暴雨影响的数值试验研究 [J]. 气象, 25 (7): 3-7. Xu Guoqiang, Hu Xin, Su Hua. 1999. Simulation study of Taihang Mountain terrain effects on heavy rain in August 1996 [J]. Meteorological Monthly (in Chinese), 25 (7): 3-7.
[44]  许焕斌. 1992. 中-β模式研究: 地形云的数值模拟 [J]. 计算物理, 9 (4): 731-734. Xu Huanbin. 1992. A study of meso-β scale model: Numerical simulation of topographic cloud [J]. Chinese Journal of Computational Physics (in Chinese), 9 (4): 731-734.
[45]  杨国祥, 何齐强, 陆汉城. 1991. 中尺度气象学 [M]. 北京: 气象出版社, 198-221. Yang Guoxiang, He Qiqiang, Lu Hancheng. 1991. Mesomet- eorology [M]. Beijing: China Meteorological Press, 198-221.
[46]  尹雪莲, 郭建华, 董安祥, 等. 2008. 沿祁连山两次典型强降水天气个例对比分析 [J]. 高原气象, 27 (1): 184-192. Yin Xuelian, Guo Jianhua, Dong Anxiang, et al. 2008. Contrast analysis of two typical heavy precipitation weather cases along Qilian Mountain [J]. Plateau Meteorology (in Chinese), 27 (1): 184-192.
[47]  臧增亮, 张铭, 沈洪卫, 等. 2004. 江淮地区中尺度地形对一次梅雨锋暴雨的敏感性试验 [J]. 气象科学, 24 (1): 26-34. Zang Zengliang, Zhang Min, Shen Hongwei, et al. 2004. Experiments on the sensitivity of meso-scale terrains in Janghuai area to a heavy mold rain [J]. Scientia Meteorologica Sinica (in Chinese), 24 (1): 26-34.
[48]  朱民, 余志豪, 陆汉城. 1999. 中尺度地形背风波的作用及其应用 [J]. 气象学报, 18 (4): 649-667. Zhu Min, Yu Zhihao, Lu Hancheng. 1999. The effect of meso-scale lee wave and its application [J]. Acta Meteorologica Sinica (in Chinese), 18 (4): 649-667.
[49]  周天军, 钱永甫. 1996. 地形效应影响数值预报结果的试验研究 [J]. 大气科学, 20 (4): 452-462. Zhou Tianjun, Qian Yongfu. 1996. An experimental study on the effects of topography on numerical prediction [J]. Chinese Journal of Atmospheric Sciences (Scientia Atmospherica Sinica) (in Chinese), 20 (4): 452-462.
[50]  朱素行, 徐海明, 徐蜜蜜. 2010. 亚洲夏季风区中尺度地形降水结构及分布特征 [J]. 大气科学, 34 (1): 71-82. Zhu Suxing, Xu Haiming, Xu Mimi. 2010. Structure and distribution of rainfall over mesoscale mountains in the Asian summer monsoon region [J]. Chinese Journal of Atmospheric Sciences (in Chinese), 34 (1): 71-82. 郑国光, 陈跃, 陈添宇, 等. 2011. 祁连山夏季地形云综合探测试验 [J]. 地球科学进展, 26 (10): 1057-1070. Zheng Guoguang, Chen Yue, Chen Tianyu, et al. 2011. The observational study of summer orographic clouds structures of Qilian Mountains [J]. Advances in Earth Science (in Chinese), 26 (10): 1057-1070.
[51]  Bader M J, Roach W T. 1977. Orographic rainfall in warm sectors of depressions [J]. Quart. J. Roy. Meteor. Soc., 103: 269-280.

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