Effects of Rough Hail Scattering on Polarimetric Variables

Details

• Journal Title:
  IEEE Transactions on Geoscience and Remote Sensing
• Personal Author:
  Mirkovic, Djordje ; Zrnic, Dusan S. ; Melnikov, Valery ; Zhang, Pengfei
• NOAA Program & Office:
  OAR (Oceanic and Atmospheric Research) ; NSSL (National Severe Storms Laboratory) ; CIMMS (Cooperative Institute for Mesoscale Meteorological Studies)
• Description:
  We use a commercially available full-wave electromagnetic (EM) tool to model scattering off rough hail. Through modeling various axis ratios and surface roughness, we systematically evaluate their effect on the polarimetric variables used for hail size discrimination. Our results produce the differential reflectivity and the copolar correlation coefficient typically not achieved using forward operators. We compare our results with available information in the literature. The inclusion of the additional shape parameter brings new insights into problems associated with the polarimetric variable for hailstone size gauging. Finally, using dual-polarization weather radars' (WSR-88Ds') observations of a hail storm on two opposite sides, we hypothesize that the source of negative differential reflectivity is wet oblate hail in the resonant size range.
• Keywords:
  Atmospheric Modeling Computational Modeling Hail Observations Hail Signature Polarimetric Variables Polarimetric Weather Radar Rough Surfaces Scattering Scattering From Hail Shape Storms Surface Roughness

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• Source:
  IEEE Transactions on Geoscience and Remote Sensing
• DOI:
  https://doi.org/10.1109/TGRS.2021.3091907
• Document Type:
  Journal Article
• Rights Information:
  Accepted Manuscript
• Compliance:
  Submitted
• Main Document Checksum:
  urn:sha256:55c08472d9bf49e440cbb9aebd866fba65a0c90a3b68b670fe3c572798af70bd
• Download URL:
  https://repository.library.noaa.gov/view/noaa/32006/noaa_32006_DS1.pdf
• File Type:
  [PDF - 2.83 MB ]