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Relationship between Aerosols, Hail Microphysics, and ZDR Columns
- Source :
- Journal of the Atmospheric Sciences. 75:1755-1781
- Publication Year :
- 2018
- Publisher :
- American Meteorological Society, 2018.
-
Abstract
- 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.
- Subjects :
- Convection
Atmospheric Science
010504 meteorology & atmospheric sciences
Microphysics
Meteorology
0208 environmental biotechnology
02 engineering and technology
Differential reflectivity
01 natural sciences
Bin
020801 environmental engineering
law.invention
Aerosol
law
Middle latitudes
Environmental science
Vertical velocity
Radar
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 15200469 and 00224928
- Volume :
- 75
- Database :
- OpenAIRE
- Journal :
- Journal of the Atmospheric Sciences
- Accession number :
- edsair.doi...........2abf65e96778d1e2be799a9744e5aae1