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Strategic Study of CAE >> 2012, Volume 14, Issue 9

Microphysical parameters retrieval by cloud radar and comparing with aircraft observation in stratiform cloud

1. State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China;

2.Jilin Weather Modification Office, Jilin 130062, China

Funding project:中国气象科学研究院基本科研业务经费“大气水凝物微物理参数及风场垂直结构多波长遥感探测和反演方法研究”、国家自然科学基金项目(40775021,41075098);863项目“机载气象雷达云雨探测应用系统”(2007AA061901) Received: 2012-06-26 Available online: 2012-09-25 09:17:42.000

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Abstract

The relationships among reflectivity, velocity and spectrum width of stratiform cloud are simulated, and the availability of cloud radar data are analyzed. The reflectivity, velocity and spectrum width observed by cloud radar in vertical observation model are used to retrieve the liquid water content and the size distribution in stratiform cloud under the assumption of neglecting the air vertical speed and turbulence. The results show that the relationships among reflectivity, velocity and spectrum width observed by 8 mm cloud radar are similar to simulated values. The mean drop size, toll drop number and liquid water contend have obvious variations from cloud top to reflectivity center. The increase of reflectivity is due to the increase of drop size. The microphysical parameters retrieved by cloud radar have similar range with that by aircraft.

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References

[ 1 ] Deng M,Gerald G M.Cirus mic rophysical properties and air mo-tion statistics using cloud radar Doppler moments,pat I:algo-ithm description[J].JA M and Climat,2006,45:1690-1709. link1

[ 2 ] Frisch A S.Fairall C w.SniderJ B.Measurement of stratus cloud and drizzle parameters in ASTEX with a K tand Doppler radar and a microwave radiometer[J].J Atmos Sci 1995,52:2788-2799 link1

[ 3 ] Gossar E E.Measurement of cloud droplet spee tra by Doppler na-dar[J].J Atmos Oceanic Technol,1994,11:712-726.

[ 4 ] Gossard E E,SniderJ B,Clothiaux E E,et al.The Potential of8 mm radars for re motely sensing cloud drop size distributions[J].J Atmos 0ceanic Technol,1997,14:76-87. link1

[ 5 ] Zhong Lingzhi,Liu Liping,Sheng Feng,et al.A 35 GHz pola-imet ric Doppler radar and its applicat ion in observing clouds asso-ciated with typhoon[J].Advanced Atmospheric Sciences,2011,28:945-956. link1

[ 6 ] Zhong Linghi,Liu Liping,Deng Min,et al.Ret rieving mic ro-physical properties and air motion of cirnus based on the Doppler mo me nt s method by using cloud radar[J].Advances in Atmo-spheric Sciences,2011,doi:10.1007/00376-011 0112. link1

[ 7 ] 彭亮,利用ARM云雷达及其他相关仪器观测分析研究云的性质[D].北京:中国科学院,2010.

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