Theoretical study of mixing in liquid clouds – Part 1: Classical concepts

Theoretical study of mixing in liquid clouds – Part 1: Classical concepts

The present study considers final stages of in-cloud mixing in the framework of classical concept of homogeneous and extreme inhomogeneous mixing. Simple analytical relationships between basic microphysical parameters were obtained for homogeneous and extreme inhomogeneous mixing based on the adiaba...

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Bibliographic Details
Published in:Atmospheric chemistry and physics Vol. 16; no. 14; pp. 9235 - 9254
Main Authors: Korolev, Alexei, Khain, Alex, Pinsky, Mark, French, Jeffrey
Format: Journal Article
Language:English
Published: Katlenburg-Lindau Copernicus GmbH 28-07-2016
European Geosciences Union
Copernicus Publications
Subjects:
Adiabatic
Adiabatic flow
Climate change
Clouds
Clouds (Meteorology)
Convective clouds
ENVIRONMENTAL SCIENCES
Frameworks
GEOSCIENCES
Humidity
Identification
In situ measurement
Parameters
Precipitation
Simulation
Size distribution
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Summary:The present study considers final stages of in-cloud mixing in the framework of classical concept of homogeneous and extreme inhomogeneous mixing. Simple analytical relationships between basic microphysical parameters were obtained for homogeneous and extreme inhomogeneous mixing based on the adiabatic consideration. It was demonstrated that during homogeneous mixing the functional relationships between the moments of the droplets size distribution hold only during the primary stage of mixing. Subsequent random mixing between already mixed parcels and undiluted cloud parcels breaks these relationships. However, during extreme inhomogeneous mixing the functional relationships between the microphysical parameters hold both for primary and subsequent mixing. The obtained relationships can be used to identify the type of mixing from in situ observations. The effectiveness of the developed method was demonstrated using in situ data collected in convective clouds. It was found that for the specific set of in situ measurements the interaction between cloudy and entrained environments was dominated by extreme inhomogeneous mixing.
Bibliography:Israel Science Foundation (ISF)
National Science Foundation (NSF)
SC0006788; AGS-1230292; AGS-1230203; 1393/14; 2010446
United States-Israel Binational Science Foundation (BSF)
USDOE Office of Science (SC), Biological and Environmental Research (BER)
ISSN:1680-7324
1680-7316
1680-7324
DOI:10.5194/acp-16-9235-2016