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Title: Aerosol effects on the anvil characteristics of mesoscale convective systems

Abstract

Abstract Simulations of two mesoscale convective systems (MCSs) that occurred during the Midlatitude Continental Convective Clouds Experiment were performed to examine the impact of aerosol number concentration on the vertical distributions of liquid and ice condensate and the macrophysical, microphysical, and radiative properties of the cirrus‐anvil cloud shield. Analyses indicate that for an increase in aerosol concentration from a clean continental to a highly polluted state, there was an increase in the rime collection rate of cloud water, which led to less lofted cloud water. Aerosol‐induced trends in the cloud mixing ratio profiles were, however, nonmonotonic in the mixed phase region, such that a moderate increase in aerosol concentration produced the greatest reduction in cloud water. Generally, less lofted cloud water led to less anvil ice mixing ratio but more numerous, small ice crystals within the anvil. In spite of reduced anvil ice mixing ratio, the anvil clouds exhibited greater areal coverage, increased albedo, reduced cloud top cooling, and reduced net radiative flux, which led to an aerosol‐induced warming (reduced cooling) effect in these squall lines.

Authors:
 [1];  [1];  [1]; ORCiD logo [1];  [1]
  1. Department of Atmospheric Science Colorado State University Fort Collins Colorado USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1402278
Grant/Contract Number:  
DE‐SC0010569
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
Journal of Geophysical Research: Atmospheres
Additional Journal Information:
Journal Name: Journal of Geophysical Research: Atmospheres Journal Volume: 121 Journal Issue: 18; Journal ID: ISSN 2169-897X
Publisher:
American Geophysical Union (AGU)
Country of Publication:
United States
Language:
English

Citation Formats

Saleeby, S. M., van den Heever, S. C., Marinescu, P. J., Kreidenweis, S. M., and DeMott, P. J. Aerosol effects on the anvil characteristics of mesoscale convective systems. United States: N. p., 2016. Web. doi:10.1002/2016JD025082.
Saleeby, S. M., van den Heever, S. C., Marinescu, P. J., Kreidenweis, S. M., & DeMott, P. J. Aerosol effects on the anvil characteristics of mesoscale convective systems. United States. https://doi.org/10.1002/2016JD025082
Saleeby, S. M., van den Heever, S. C., Marinescu, P. J., Kreidenweis, S. M., and DeMott, P. J. Mon . "Aerosol effects on the anvil characteristics of mesoscale convective systems". United States. https://doi.org/10.1002/2016JD025082.
@article{osti_1402278,
title = {Aerosol effects on the anvil characteristics of mesoscale convective systems},
author = {Saleeby, S. M. and van den Heever, S. C. and Marinescu, P. J. and Kreidenweis, S. M. and DeMott, P. J.},
abstractNote = {Abstract Simulations of two mesoscale convective systems (MCSs) that occurred during the Midlatitude Continental Convective Clouds Experiment were performed to examine the impact of aerosol number concentration on the vertical distributions of liquid and ice condensate and the macrophysical, microphysical, and radiative properties of the cirrus‐anvil cloud shield. Analyses indicate that for an increase in aerosol concentration from a clean continental to a highly polluted state, there was an increase in the rime collection rate of cloud water, which led to less lofted cloud water. Aerosol‐induced trends in the cloud mixing ratio profiles were, however, nonmonotonic in the mixed phase region, such that a moderate increase in aerosol concentration produced the greatest reduction in cloud water. Generally, less lofted cloud water led to less anvil ice mixing ratio but more numerous, small ice crystals within the anvil. In spite of reduced anvil ice mixing ratio, the anvil clouds exhibited greater areal coverage, increased albedo, reduced cloud top cooling, and reduced net radiative flux, which led to an aerosol‐induced warming (reduced cooling) effect in these squall lines.},
doi = {10.1002/2016JD025082},
journal = {Journal of Geophysical Research: Atmospheres},
number = 18,
volume = 121,
place = {United States},
year = {Mon Sep 26 00:00:00 EDT 2016},
month = {Mon Sep 26 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
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https://doi.org/10.1002/2016JD025082

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Cited by: 22 works
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