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包含正定水汽高精度算法的MM5模式的暴雨实例试验 被引量:1

THE CASE EXPERIMENTS ON A HIGH ACCURATE AND POSITIVE MOISTURE ADVECTION SCHEME WITH NUMERICAL MODEL MM5
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摘要 本文首先对非静力中尺度模式MM5的水汽输送方案作了半理想试验,结果显示,MM5原有的水汽平流输送算法在水汽梯度较大的地方产生水汽负值,影响模式的模拟结果和模式的稳定性。对此,本文把一个正定的水汽输送算法Prather算法引入MM5,并用实例作了数值试验,检验了模式的模拟能力,结果表明,对MM5的改进是敏感的有效的,Prather格式增强了模式对暴雨落区,暴雨中心的模拟能力。 This paper firstly presents a semi-ideal experiment on the moisture advection scheme used in non-hydrostatic meso-scale model MM5 and gains the results that the moisture advection scheme of MM5 causes the negative moisture in area with large moisture gradient,with bad influence on model's results and stability. Accordingly,a positive moisture advection scheme,Prather scheme,is found sensitive and effective. Prather scheme improves the ability of the simulation of heavy rainfall.
出处 《气象科学》 CSCD 北大核心 2000年第2期136-142,共7页 Journal of the Meteorological Sciences
基金 国家自然科学基金!49675266 北京大学暴雨监测和预测国家重点实验室的资助
关键词 水汽输送 非静力 平流方案 暴雨 实例试验 Moisture transport Non-hydrostatic model Advection scheme
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参考文献2

  • 1葛孝贞,南京大学学报,1997年,4卷,290页
  • 2程麟生,中尺度大气数值模式和模拟,1994年,96页

同被引文献56

  • 1关颖 李长青.着装厚度指数研究及预报[A]..环境气象业务服务研讨会论文集[C].北京,气象出版社,2002.125—128.
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  • 5Leidner S,Mark S,David R. Seaman N L. Improving short-term numerical weather prediction in the California coastal zone by dynamic initialization of the marine boundary layer[J]. Monthly Weather Review, 2001,129 (2) : 275-294.
  • 6Richter H,Bosart L F. The Suppression of Deep Moist Convection near the Southern Great Plains Dryline[J]. Monthly Weather Review, 2002,130(7) : 1665-1691.
  • 7Kun F S ,Chisheng W,Pan H I, et al. Numerical prediction experiment on Typhoon Maggie (9903) [J]. Acta Oceanologica Sinica/Haiyang Xuebao, 2001,20(2) : 171-181.
  • 8Chen Y,Yau M K. Spiral Bands in a Simulated Hurricane,Part I. Vortex Rossby Wave Verification[J]. Journal of the Atmospheric Sciences, 2001, 58(15) : 2128-2145.
  • 9Steenburgh W J,Onton D J. Multiscale analysis of the 7 December 1998 Great Salt Lake-Effect snowstorm[J]. Monthly Weather Review,2001,129(6) :1296-1317.
  • 10Zaengl G, Egger J, Wirth V. Diurnal winds in the Himalayan Kali Gandaki Valley, Part Ⅱ: Modeling [J]. Monthly Weather Review, 2001,129(5) : 1062-1080.

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