WRF模式对澳洲一次热带深对流系统的模拟研究
-
摘要: 利用WRF(Weather Research Forecast)模式和1 °×1 °NCEP全球分析资料对2005年11月16日澳大利亚北部Tiwi岛上的一次热带深对流个例进行了数值模拟,对模式网格分辨率和微物理参数化方案的影响进行了敏感性试验,并与实测资料进行了对比。试验结果显示:模式较好地再现了这次热带对流云的日变化特征,即早期降水由沿岸的海风锋初始对流形成,之后出现单体合并现象并最终形成成熟的深对流系统。但是,模式在模拟深对流系统出现的时间及位置方面仍然需要改进。敏感性试验显示,就本次个例而言,二重嵌套方案在降水分布以及降水强度方面的模拟结果比非嵌套方案更接近实际探测。另外,微物理过程参数化方案对降水量的模拟也有一定影响,采用Purdue Lin方案的模拟结果更接近于实测情况。
-
[1] 热带深对流相关问题[2007-04-05]. http://eos.atmos.washington.edu. [2] DESSLER A E. The effect of deep, tropical convection on the tropical tropopause layer [J]. J Geophys Res, 2002,107 (D3): 4033, doi: 10.1029/2001JD000511. [3] CARBONE R E, WILSON J W, KEENAN T D, et al. Tropical Island Convection in the absence of significant topography Part I: Liife cycle of diurnally forced convection [J]. Mon Wea Rev, 2000, 128(10): 3 459-3 480.[4] KEENAN, FERRIER T B, SIMPSON J. Development and structure of a maritime continent thunderstorm[J]. Meteorology and Atmospheric Physics, 1994, 53: 185-222.[5] GOLDING, B. W. A numerical investigation of tropical island and thunderstorm [J]. Mon Wea Rev, 1993, 121(5): 1 417-1 433.[6] SAITO K, KEENAN T, HOLLAND G, et al. Numerical simulation of the diurnal evolution of tropical island convection over the maritime continent [J]. Mon Wea Rev, 2001, 129(3): 378-400.[7] 章国材. 美国WRF模式的进展和应用前景[J]. 气象,2004(12): 27-31.[8] JOSEPH B K. Weather research and forecasting model: A technical overview[C]. 84th AMS annual meeting, Seattle, USA. Jan. 10-15, 2004.[9] 孙健,赵平. 用WRF与MM5模拟1998年三次暴雨过程的对比分析[J]. 气象学报, 2003, 6 (61): 692-701.[10] 侯建忠, 宁志谦, 陈高峰,等. WRF模式2005年汛期在陕西应用与分析[J]. 陕西气象,2006(1): 22-36.[11] WANG S, HUANG S, LI Y. Sensitive numerical simulation and analysis of rain storm using nested WRF model [J]. Journal of Hydrody-namics (Ser B), 2006, 18(5): 578-586.[12] LEUNG L, KUO B, TRIBBIA J, et al. Analysis and evaluation of WRF tropical channel simulations [C]. 2006 AGU Joint Assembly, Baltimore, Maryland (USA), 23-26 May 2006.[13] HOLLAND G, LEUNG L, KUO Y, et al. A high-resolution WRF tropical channel simulation driven by a global reanalysis[C]. American Geophysical Union Fall Meeting, San Francisco (USA), 11-15 Dec 2006.[14] WAPLER K, LANE T, MAY P, et al. WRF model simulations of tropical cloud systems observed during TWP-ICE[C]. EGU General Assembly 2008, SRef-ID: 1607-7962/gra/EGU2008-A-00079.[15] WILLIAM C S, JOSEPH B K, JIMY D et al. A description of the advanced research WRF version 2. NCAR/TN–468+STRNCAR TECHNI-CAL NOTE [Z], June 2005 Last revision: January 2007.[16] LIN Y L, FARLEY R D, ORVILLE H D. Bulk parameterization of the snow field in a cloud model [J]. J Climate Appl Meteor, 1983, 22: 1 065–1092.[17] RUTLEDGE S A, HOBBS P V. The mesoscale and microscale structure and organization of clouds and precipitation in midlatitude cyclones. XII: A diagnostic modeling study of precipitation development in narrow cloud-frontal rainbands [J]. J Atmos Sci, 1984, 41(20): 2 949–2 972.[18] TAO W -K J, SIMPSON J, Mc CUMBER M. An ice-water saturation adjustment [J]. Mon Wea Rev, 1989, 117(1): 231–235.[19] DROEGEMEIER K K, WILHELMSON R B. Three-Dimensional numerical modeling of convection produced by interacting thunderstorm outflows. Part I: Control Simulation and Low-level Moisture [J]. J Atmos Sci, 1985, 42(22): 2 381-2 403.[20] SIMPSON J, KEENAN T D, FERRIER B, et al. Cumulus mergers in the maritime continent Region [J]. Meteor Atmos Phys, 1991, 51: 73-99.
点击查看大图
计量
- 文章访问数: 1553
- HTML全文浏览量: 0
- PDF下载量: 2358
- 被引次数: 0