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Raindrop axial and backscatter ratios using a collisional probability model
Author(s) -
Beard K. V.,
Johnson D. B.
Publication year - 1984
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl011i001p00065
Subject(s) - backscatter (email) , dissipation , physics , oscillation (cell signaling) , computational physics , mechanics , atomic physics , environmental science , atmospheric sciences , thermodynamics , chemistry , telecommunications , computer science , wireless , biochemistry
The steady‐state distribution of oscillation energies for raindrops was computed for a balance between input energies from collisions and dissipation by viscosity. Calculations of the oscillation responses indicates that an appreciable fraction of large raindrops (≳ 3 mm diameter) in heavy rain showers are oscillating with axis ratio changes greater than 10%. Computations of the distribution averages for the axis ratio, backscatter ratio, and Z DR indicate increasingly significant deviations from values for static raindrop shapes with increasing rain rates.