He Ping, Zhu Xiaoyan, Ruan Zheng, et al. Preliminary study on precipitation process detection using wind profiler radar. J Appl Meteor Sci, 2009, 20(4): 465-470.
Citation: He Ping, Zhu Xiaoyan, Ruan Zheng, et al. Preliminary study on precipitation process detection using wind profiler radar. J Appl Meteor Sci, 2009, 20(4): 465-470.

Preliminary Study on Precipitation Process Detection Using Wind Profiler Radar

  • Received Date: 2008-07-31
  • Rev Recd Date: 2009-04-30
  • Publish Date: 2009-08-31
  • In order to investigate precipitation process using wind profiler radar (WPR), an observation case is analyzed. WPR is very sensitive to precipitation process and can be used to detect many indicative phenomena before the rain. In this case, horizontal wind shear is recognized 10 hours before the precipitation, and the maximum observation-height increases by at least 2 km than usual. As the rainfall draws near, the height of downward speed gradually decreases.Data analysis shows that domestic WPR is applicable to work in precipitation weather. It provides various instructive data for studying precipitation such as horizontal wind, vertical wind and signal to noise ratio data. Further, WPR can provide data of wind speed, falling speed of rain-drops and their vertical distribution simultaneously, so it' s fairly useful for investigating precipitation process in depth.
  • Fig. 1  The vertical speed and SNR data of precipitation process from CFL-08 WPR during 25-26 August 2006 of Yanqing

    Fig. 2  The power spectral density with logarithmic form in vertical beam at 21:32 25 August 2006

    Fig. 3  Profiler of average vertical speed, SNR and spectral width of vertical speed from 21:32 to 22:19 on 25 August 2006

    Fig. 4  The change rate of averaged vertical speed in vertical direction from 21:32 to 22:19 on 25 August 2006

    Fig. 5  The vertical shear of horizontal wind

    Fig. 6  The observing height of horizontal wind in different time during 24-26 August 2006

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    • Received : 2008-07-31
    • Accepted : 2009-04-30
    • Published : 2009-08-31

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