Relationship between Aerosols, Hail Microphysics, and ZDR Columns

Ilotoviz, E.; Khain, A.; Ryzhkov, Alexander V.; Snyder, Jeffrey C.

doi:10.1175/JAS-D-17-0127.1

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Relationship between Aerosols, Hail Microphysics, and ZDR Columns

2019
By Ilotoviz, E. ; Khain, A. ; Ryzhkov, Alexander V. ; ...
Source: Journal of the Atmospheric Sciences, 75(6), 1755-1781

[PDF-4.78 MB]

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Journal Title:

Journal of the Atmospheric Sciences
Personal Author:

Ilotoviz, E. ; Khain, A. ; Ryzhkov, Alexander V. ; Snyder, Jeffrey C.

Ilotoviz, E. ; Khain, A. ; Ryzhkov, Alexander V. ; Snyder, Jeffrey C. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; NSSL (National Severe Storms Laboratory) ; CIMSS (Cooperative Institute for Meteorological Satellite Studies)

OAR (Oceanic and Atmospheric Research) ; NSSL (National Severe Storms Laboratory) ; CIMSS (Cooperative Institute for Meteorological Satellite Studies) Less -
Description:

Mechanisms of formation of differential reflectivity columns are investigated in simulations of a midlatitude summertime hailstorm with hailstones up to several centimeters in diameter. Simulations are performed using a new version of the Hebrew University Cloud Model (HUCM) with spectral bin microphysics. A polarimetric radar forward operator is used to calculate radar reflectivity and differential reflectivity ZDR. It is shown that ZDR columns are associated with raindrops and with hail particles growing in a wet growth regime within convective updrafts. The height and volume of ZDR columns increases with an increase in aerosol concentration. Small hail forming under clean conditions grows in updrafts largely in a dry growth regime corresponding to low ZDR. Characteristics of ZDR columns are highly correlated with vertical velocity, hail size, and aerosol concentration.
Keywords:

[+]

Aerosol-cloud Interaction Cloud Resolving Models Clouds Convective Clouds Hail Radars/Radar Observations
Source:

Journal of the Atmospheric Sciences, 75(6), 1755-1781
DOI:

https://doi.org/10.1175/JAS-D-17-0127.1
Document Type:

Journal Article
Funding:

Grant no. NA11OAR4320072
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Submitted
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urn:sha256:9d1096574ffb1e2e5535db8fa543e3f08756a9370955f9f989b9aff1f4a98c5f
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https://staging-noaa.cdc.gov/view/noaa/32231/noaa_32231_DS1.pdf
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Relationship between Aerosols, Hail Microphysics, and ZDR Columns

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