Method of WPR Getting Air Vertical Velocity in Precipitation Cloud

  • MA Jianli ,
  • RUAN Zheng ,
  • HUANG Yu
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  • Beijing Weather Modification Office, Beijing 100089, China;2. State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China

Received date: 2013-08-29

  Online published: 2015-06-28

Abstract

Base on the fact that the returning signal power spectrum of UHF wind profile radar(WPR) in rainy day may contain the air and raindrops vertical velocity information,which is called BS(Bimodal Spectrum), the research work is done to recognize BS of Beijing Yanqing 445 MHz WPR (CFL-08) vertical beam detecting data from 2009 to 2011, after dealing wih the BS data, the echo intensity of raindrops ZR and the raindrops mean vertical velocity VR can be obtained, and the least square fitting relationship between WT and ZR is described as WT=3.75H-0.085ZR0.006H+0.066, this formula gives an effective method to estimate the air mean vertical velocity for the vertically pointing Doppler radar under rainfall condition.

Cite this article

MA Jianli , RUAN Zheng , HUANG Yu . Method of WPR Getting Air Vertical Velocity in Precipitation Cloud[J]. Plateau Meteorology, 2015 , 34(3) : 825 -831 . DOI: 10.7522/j.issn.1000-0534.2013.00161

References

[1]李大山. 人工影响天气现状与展望[M]. 北京: 气象出版社, 2002.
[2]Gage K S, Balsley B B. Doppler Radar Probing of the Clear Atmosphere[J]. Bull Amer Meteor Soc, 1978, 59(9): 1074-1093.
[3]张培昌, 杜秉玉, 戴铁丕. 雷达气象学[M]. 北京: 气象出版社, 2001.
[4]Wakasugi K, Fukao S, Kato S, et al. Air and precipitation particle motions within a cold front measured by MU VHF radar[J]. Radio Science, 1985, 20: 1233-1240.
[5]Larsen M F, Rottger J. Observations of thunderstorm reflectivities ans doppler velocities measured at VHF and UHF[J]. J Atmos Ocean Technol, 1987, 4: 151-159.
[6]Ecklund W L, Carter D A, Balsley B B. A UHF wind profiler for the boundary layer. Breif description and initial reshuts[J]. J Atmos Ocean Technol, 1988, 5: 432-441.
[7]Wuertz D G, Weber B L, Strauch R G, et al. Effects of precipitation on UHF wind profiler measurements[J]. J Atmos Ocean Technol, 1988, 5: 450-456.
[8]Gossard E E. Measuring drop-size distributions in clouds with a clear-air sensing Doppler radar[J]. J Atmos Ocean Technol, 1988, 5: 640-649.
[9]Gossard E E, Atlas D. Radar research on the atmospheric boundary layer[M]//Atlas D, ed. Radar in Meteorology. American Meteorological Society, 1990, 10: 477-527.
[10]FuKao S, Wakasugi K, Sato S, et al. Direct measurement of air and precipitation particle motion by very high frequency Doppler radar[J]. Nature, 1985, 16: 712-714.
[11]Ralph F M. Using radar measured radial vertical velocities to distinguish precipitation scattering from clear air scattering[J]. J Atmos Ocean Technol, 1995, 12: 257-267.
[12]Foote G B, Du T P S. Terminal velocity of raindrops aloft[J]. J Appl Meteor, 1969, 8: 249-253.
[13]阮征, 何平, 葛润生. 风廓线雷达对大气折射率结构常数的探测研究[J]. 大气科学, 2008, 32(1): 133-140.
[14]Wakasugi K, Mizutani A, Matsuo M, et al. A direct method for deriving drop size distribution and vertical air velocities from VHF Doppler radar spectra[J]. J Atmos Ocean Technol, 1986, 3: 623-629.
[15]Marshall J S, Palmer W M. The distribution of raindrops with size[J]. J Meteor, 1948, 5: 165-166.
[16]王莎, 阮征, 葛润生. 风廓线雷达探测大气返回信号谱的仿真模拟[J]. 应用气象学报, 2012, 23(1): 20-29.
[17]王蕙莹, 王振会, 杨通晓, 等. 双基地雷达系统探测椭球雨滴群时主站仰角对探测性能的影响[J]. 高原气象, 2013, 32(4): 1165-1173, doi: 10.7522/j.issn.1000-0534.2012.00110.
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