Application of Spectral Polarimetry to a Hailstorm at Low Elevation Angle

Wang, Yadong; Yu, Tian-You; Ryzhkov, Alexander V.; Kumjian, Matthew R.

doi:10.1175/JTECH-D-18-0115.1

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

i

Application of Spectral Polarimetry to a Hailstorm at Low Elevation Angle

2019
By Wang, Yadong ; Yu, Tian-You ; Ryzhkov, Alexander V. ; ...
Source: J. Atmos. Oceanic Technol. (2019) 36 (4): 567–583.

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Details:

Journal Title:

Journal of Atmospheric and Oceanic Technology
Personal Author:

Wang, Yadong ; Yu, Tian-You ; Ryzhkov, Alexander V. ; Kumjian, Matthew R.

Wang, Yadong ; Yu, Tian-You ; Ryzhkov, Alexander V. ; Kumjian, Matthew R. Less -
NOAA Program & Office:

NOAA Cooperative Institutes ; CIMMS (Cooperative Institute for Mesoscale Meteorological Studies)

NOAA Cooperative Institutes ; CIMMS (Cooperative Institute for Mesoscale Meteorological Studies) Less -
Description:

Spectral polarimetry has the potential to be used to study microphysical properties in relation to the dynamics within a radar resolution volume by combining Doppler and polarimetric measurements. The past studies of spectral polarimetry have focused on using radar measurements from higher elevation angles, where both the size sorting from the hydrometeors’ terminal velocities and polarimetric characteristics are maintained. In this work, spectral polarimetry is applied to data from the 0° elevation angle, where polarimetric properties are maximized. Radar data collected by the C-band University of Oklahoma Polarimetric Radar for Innovations in Meteorology and Engineering (OU-PRIME) during a hailstorm event on 24 April 2011 are used in the analysis. The slope of the spectral differential reflectivity exhibits interesting variations across the hail core, which suggests the presence of size sorting of hydrometeors caused by vertical shear in a turbulent environment. A nearby S-band polarimetric Weather Surveillance Radar-1988 Doppler (KOUN) is also used to provide insights into this hailstorm. Moreover, a flexible numerical simulation is developed for this study, in which different types of hydrometeors such as rain and melting hail can be considered individually or as a combination under different sheared and turbulent conditions. The impacts of particle size distribution, shear, turbulence, attenuation, and mixture of rain and melting hail on polarimetric spectral signatures are investigated with the simulated Doppler spectra and spectral differential reflectivity.
Keywords:

[+]

Hail Remote Sensing
Source:

J. Atmos. Oceanic Technol. (2019) 36 (4): 567–583.
DOI:

https://doi.org/10.1175/JTECH-D-18-0115.1
Document Type:

Journal Article
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Submitted
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[+]

urn:sha256:db4b97f91128f6c5d4d75342a39e542ab7da34f6e4e8bf99a1450f13447f6af3
Download URL:

https://repository.library.noaa.gov/view/noaa/25701/noaa_25701_DS1.pdf
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[PDF-2.72 MB]