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云滴谱的不确定性对中尺度降水的影响 预览 被引量:3

IMPACT OF CLOUD DROPLETS SPECTRAL UNCERTAINTY ON THE MESOSCALE PRECIPITATION
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摘要 云滴的谱分布通过改变云滴的有效半径影响辐射传输过程,改变大气的热力、动力状况,进而影响云的发展,因此云滴谱将影响云和辐射的相互作用,从而改变地面降水.利用包含详细云微物理方案的MM5V3中尺度模式对1998年6月8日华南暴雨和2002年7月22日长江暴雨进行了数值模拟,研究了中尺度模式中云滴谱的不确定性对地面降水的影响.模拟结果表明,云滴谱在中尺度地面降水中起着重要的作用,其不确定性对地面降水的范围影响很小,却能明显地改变降水强度,能显著地改变地面降水中心的降水量和中心位置,还可能改变降水的起止时间;云滴谱的不确定性能够引起最大超过10%的平均降水强度的改变,而且其差异在白天比夜间更明显. The effective radius of cloud droplets, changing due to the cloud droplets spectral uncertainty (CDSU), can affect the radiation transfer processes. This effect may modify the atmospheric thermal and dynamical structure, cloud development, and surface precipitation. The impact of CDSU in the cloud-radiation processes on mesoscale precipitation was studied in this paper using two storm cases, a South China storm on June 8th, 1998 and a Yangtze River storm on July 22nd, 2002, and employing the MM5V3 with which a newly developed, dual-parameterized explicit moisture scheme is coupled. The results show that CDS plays a very important role in the mesoscale precipitation. Its uncertainty has a slight effect on the overall rainfall pattern, but a significant effect on rainfall intensity. The position and intensity, even the beginning and ending time of the precipitation centers, can also be modified significantly. The maximum change of mean rainfall intensity is over 10% due to CDSU and difference among experiments is more obvious in the daytime than at night.
作者 周广强 赵春生 秦瑜 ZHOU Guang-qiang, ZHAO Chun-sheng, QIN Yu (1. Department of Atmospheric Science, School of Physics, Peking University, Beijing 100871, China; 2. Shanghai Typhoon Institute, CMA, Shanghai 200030, China )
出处 《热带气象学报》 CSCD 北大核心 2005年第6期 605-614,共10页 Journal of Tropical Meteorology
基金 中国科学院资助项目,科技部科研项目
关键词 云辐射 中尺度降水 有效半径 数值模拟 cloud radiation mesoscale precipitation effective radius numerical simulation
作者简介 周广强(1976-),男,四川人,博士,从事云物理和辐射领域的研究。E-mail:zhougq@mail.typhoon.gow.cn
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  • 1FU Q,KRUEGER S K,LIOU K N.Interactions of radiation and convection in simulated tropical cloud clusters[J].J AtmosSci,1995,52(9):1310-1328. 被引量:1
  • 2TAO W-K,LANG S,SIMPSON J,et al.Mechanisms of Cloud-radiation interaction in the tropics and midlatitudes[J].J Atmos Sci,1996,53(18):2624-2651. 被引量:1
  • 3丁守国..积云过程中云与辐射相互作用的数值研究 [D].北京大学,2001:
  • 4CESS R D,ZHANG M H,INGRAM W J,et al.Cloud feedback in atmospheric general circulation models:An update[J].J Geophys Res,1996,101:12791-12794. 被引量:1
  • 5HAN Q,ROSSOW W B,LACIS A A.Near-global survey of effective droplet radii in liquid water clouds using ISCCP data[J].J climate,1994,7(4):465-497. 被引量:1
  • 6LIU Y,DAUM P H.Anthropogenic aerosols indirect warming effect from dispersion forcing[J].Nature,2002,49:580-581. 被引量:1
  • 7HOUGHTON J T,DING Y,GRIGGS D J,et al.Climate change 2001:The Scientific Basis[A].Contribution of workinggroup I to the third assessment report of the Intergovernmental Panel on Climate Change (IPCC)[C].UK:CambridgeUniversity Press,2001.92. 被引量:1
  • 8胡志晋 何观芳.积雨云微物理过程的数值模拟(一)微物理模式[J].气象学报,1987,2(1). 被引量:35
  • 9LOU Xiaofeng,HU Zhijin,SHI Yueqin,et al.Numerical simulation of a heavy rainfall case in South China[J].Adv AtmosSci,2003,20:128-138. 被引量:1
  • 10李淑日,胡志晋,王广河.CAMS三维对流云催化模式的改进及个例模拟[J].应用气象学报,2003,14(b03):78-91. 被引量:46

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