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Student Number 83227005
Author Ching-Lun Su(ĬM)
Author's Email Address No Public.
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Department Graduate Institute of Space Science
Year 1995
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Chung-Li VHF Radar observation of atmospheric echo and hydrometeors' distribution characteristics during frontal precipitations
Date of Defense
Page Count 153
Keyword
  • atmospheric echo
  • Chung-Li VHF Radar
  • front
  • hydrometeors' distribution
  • precipitation
  • Abstract Using the VHF radar, precipitation is observed in the low
    atmosphere. It is understood that the structure of atmosphere
    varies in the precipitation environment. For example, during
    the front,the atmophere and precipitation echo power, the form
    of precipitation, the size distribution and terminal velocity
    of precipitation particle, the melting layer, the echo power
    and size of ice particle are studied suitably. However, in the
    past, the observation of precipitation and tropopause for
    studying entire atmosphere were separate. Here, the pulse width
    of observation is 4gs that will see both precipitation and
    tropopause. The height measured by the VHF radar is higher than
    rawinaode data. In the future, using pulse width of 4gs to
    make observation will provide a good opportation for studying
    the entire structure of low atmosphere. This dissertation will
    discuss the relation between the atmospheric echo power and
    atmospheric parameters, and the relation between the echo power
    and atmospheric structure. Furthermore, it will also make
    comparison among power, spectral width and vertical velocity of
    the atmosphere and precipitation echo by using the alternative
    observations of the pulse width of 2gs and 4gs. It is found
    that the distribution of precipitation particle is nonuniform
    in the space and that the affection of beam broading effect is
    small.
    Table of Content
    Reference
    Advisor
  • Yen-Hsyang Chu()
  • Files No Any Full Text File.
    Date of Submission

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