Precipitation susceptibility in marine stratocumulus and shallow cumulus from airborne measurements
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Authors
Jung, Eunsil
Albrecht, Bruce A.
Sorooshian, Armin
Zuidema, Paquita
Jonsson., Haflidi H.
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Date of Issue
2016-09-14
Date
Publisher
Copernicus Publications on behalf of the European Geosciences Union.
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Abstract
Precipitation tends to decrease as aerosol concentration
increases in warm marine boundary layer clouds at
fixed liquid water path (LWP). The quantitative nature of
this relationship is captured using the precipitation susceptibility
(Sₒ) metric. Previously published works disagree on
the qualitative behavior of Sₒ in marine low clouds: Sₒ decreases
monotonically with increasing LWP or cloud depth
(H) in stratocumulus clouds (Sₒ), while it increases and then
decreases in shallow cumulus clouds (Cu). This study uses
airborne measurements from four field campaigns on Cu and
Sc with similar instrument packages and flight maneuvers to
examine if and why Sₒ behavior varies as a function of cloud
type. The findings show that Sₒ increases with H and then
decreases in both Sc and Cu. Possible reasons for why these
results differ from those in previous studies of Sc are discussed.
Type
Article
Description
The article of record as published may be located at http://dx.doi.org/10.5194/acp-16-11395-2016
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Sponsors
Funder
ONR grants N000140810465, N00014-10-1-0811, N00014-16-1-2567, and NSF grant AGS-1008848.
Format
Citation
Jung, E., Albrecht, B. A., Sorooshian, A., Zuidema, P., and Jonsson, H. H.: Precipitation susceptibility in marine stratocumulus and shallow cumulus from airborne measurements, Atmos. Chem. Phys., 16, 11395-11413, doi:10.5194/acp-16-11395-2016, 2016.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.