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Title: Ice particle production in mid-level stratiform mixed-phase clouds observed with collocated A-Train measurements

In this study, collocated A-Train CloudSat radar and CALIPSO lidar measurements between 2006 and 2010 are analyzed to study primary ice particle production characteristics in mid-level stratiform mixed-phase clouds on a global scale. For similar clouds in terms of cloud top temperature and liquid water path, Northern Hemisphere latitude bands have layer-maximum radar reflectivity (ZL) that is ~1 to 8 dBZ larger than their counterparts in the Southern Hemisphere. The systematically larger ZL under similar cloud conditions suggests larger ice number concentrations in mid-level stratiform mixed-phase clouds over the Northern Hemisphere, which is possibly related to higher background aerosol loadings. Furthermore, we show that springtime northern mid- and high latitudes have ZL that is larger by up to 6 dBZ (a factor of 4 higher ice number concentration) than other seasons, which might be related to more dust events that provide effective ice nucleating particles. Our study suggests that aerosol-dependent ice number concentration parameterizations are required in climate models to improve mixed-phase cloud simulations, especially over the Northern Hemisphere.
Authors:
ORCiD logo [1] ; ORCiD logo [2] ;  [3] ; ORCiD logo [1] ;  [2] ;  [4]
  1. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  2. Univ. of Wyoming, Laramie, WY (United States). Dept. of Atmospheric Science
  3. Brookhaven National Laboratory (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States). School of Marine and Atmospheric Sciences
  4. Chinese Academy of Sciences, Hefei (China). Key Lab. of Atmospheric Optics
Publication Date:
Report Number(s):
BNL-203456-2018-JAAM
Journal ID: ISSN 1680-7324
Grant/Contract Number:
SC0012704; NNX13AQ41G
Type:
Accepted Manuscript
Journal Name:
Atmospheric Chemistry and Physics (Online)
Additional Journal Information:
Journal Name: Atmospheric Chemistry and Physics (Online); Journal Volume: 18; Journal Issue: 6; Journal ID: ISSN 1680-7324
Publisher:
European Geosciences Union
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Aeronautic and Space Administration (NASA)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 47 OTHER INSTRUMENTATION
OSTI Identifier:
1431453

Zhang, Damao, Wang, Zhien, Kollias, Pavlos, Vogelmann, Andrew M., Yang, Kang, and Luo, Tao. Ice particle production in mid-level stratiform mixed-phase clouds observed with collocated A-Train measurements. United States: N. p., Web. doi:10.5194/acp-18-4317-2018.
Zhang, Damao, Wang, Zhien, Kollias, Pavlos, Vogelmann, Andrew M., Yang, Kang, & Luo, Tao. Ice particle production in mid-level stratiform mixed-phase clouds observed with collocated A-Train measurements. United States. doi:10.5194/acp-18-4317-2018.
Zhang, Damao, Wang, Zhien, Kollias, Pavlos, Vogelmann, Andrew M., Yang, Kang, and Luo, Tao. 2018. "Ice particle production in mid-level stratiform mixed-phase clouds observed with collocated A-Train measurements". United States. doi:10.5194/acp-18-4317-2018. https://www.osti.gov/servlets/purl/1431453.
@article{osti_1431453,
title = {Ice particle production in mid-level stratiform mixed-phase clouds observed with collocated A-Train measurements},
author = {Zhang, Damao and Wang, Zhien and Kollias, Pavlos and Vogelmann, Andrew M. and Yang, Kang and Luo, Tao},
abstractNote = {In this study, collocated A-Train CloudSat radar and CALIPSO lidar measurements between 2006 and 2010 are analyzed to study primary ice particle production characteristics in mid-level stratiform mixed-phase clouds on a global scale. For similar clouds in terms of cloud top temperature and liquid water path, Northern Hemisphere latitude bands have layer-maximum radar reflectivity (ZL) that is ~1 to 8 dBZ larger than their counterparts in the Southern Hemisphere. The systematically larger ZL under similar cloud conditions suggests larger ice number concentrations in mid-level stratiform mixed-phase clouds over the Northern Hemisphere, which is possibly related to higher background aerosol loadings. Furthermore, we show that springtime northern mid- and high latitudes have ZL that is larger by up to 6 dBZ (a factor of 4 higher ice number concentration) than other seasons, which might be related to more dust events that provide effective ice nucleating particles. Our study suggests that aerosol-dependent ice number concentration parameterizations are required in climate models to improve mixed-phase cloud simulations, especially over the Northern Hemisphere.},
doi = {10.5194/acp-18-4317-2018},
journal = {Atmospheric Chemistry and Physics (Online)},
number = 6,
volume = 18,
place = {United States},
year = {2018},
month = {3}
}