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

i

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

Details

Journal Title:

Journal of the Atmospheric Sciences
Personal Author:

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

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

Other
Compliance:

Submitted
Download URL:

https://repository.library.noaa.gov/view/noaa/32231/noaa_32231_DS1.pdf
File Type:

[PDF - 4.78 MB]
Collection(s):

Office of Oceanic and Atmospheric Research (OAR) ; NOAA Cooperative Institutes
Main Document Checksum:

urn:sha256:9d1096574ffb1e2e5535db8fa543e3f08756a9370955f9f989b9aff1f4a98c5f

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