Large-Eddy Simulations of Marine Boundary Layer Clouds Associated with Cold-Air Outbreaks during the ACTIVATE Campaign. Part II: Aerosol–Meteorology–Cloud Interaction
Aerosol effects on micro/macrophysical properties of marine stratocumulus clouds over the western North Atlantic Ocean (WNAO) are investigated using in situ measurements and large-eddy simulations (LES) for two cold-air outbreak (CAO) cases (28 February and 1 March 2020) during the Aerosol Cloud Met...
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Online Access: | http://www.osti.gov/servlets/purl/1973245 https://www.osti.gov/biblio/1973245 https://doi.org/10.1175/jas-d-21-0324.1 |
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ftosti:oai:osti.gov:1973245 2023-07-30T04:05:30+02:00 Large-Eddy Simulations of Marine Boundary Layer Clouds Associated with Cold-Air Outbreaks during the ACTIVATE Campaign. Part II: Aerosol–Meteorology–Cloud Interaction Li, Xiang-Yu Wang, Hailong Chen, Jingyi Endo, Satoshi Kirschler, Simon Voigt, Christiane Crosbie, Ewan Ziemba, Luke D. Painemal, David Cairns, Brian Hair, Johnathan W. Corral, Andrea F. Robinson, Claire Dadashazar, Hossein Sorooshian, Armin Chen, Gao Ferrare, Richard Anthony Kleb, Mary M. Liu, Hongyu Moore, Richard Scarino, Amy Jo Shook, Michael A. Shingler, Taylor J. Thornhill, Kenneth Lee Tornow, Florian Xiao, Heng Zeng, Xubin 2023-05-17 application/pdf http://www.osti.gov/servlets/purl/1973245 https://www.osti.gov/biblio/1973245 https://doi.org/10.1175/jas-d-21-0324.1 unknown http://www.osti.gov/servlets/purl/1973245 https://www.osti.gov/biblio/1973245 https://doi.org/10.1175/jas-d-21-0324.1 doi:10.1175/jas-d-21-0324.1 54 ENVIRONMENTAL SCIENCES 2023 ftosti https://doi.org/10.1175/jas-d-21-0324.1 2023-07-11T10:27:02Z Aerosol effects on micro/macrophysical properties of marine stratocumulus clouds over the western North Atlantic Ocean (WNAO) are investigated using in situ measurements and large-eddy simulations (LES) for two cold-air outbreak (CAO) cases (28 February and 1 March 2020) during the Aerosol Cloud Meteorology Interactions over the Western Atlantic Experiment (ACTIVATE). The LES is able to reproduce the vertical profiles of liquid water content (LWC), effective radius r eff and cloud droplet number concentration N c from fast cloud droplet probe (FCDP) in situ measurements for both cases. Furthermore, we show that aerosols affect cloud properties (N c , r eff , and LWC) via the prescribed bulk hygroscopicity of aerosols ($\bar{κ}$) and aerosol size distribution characteristics. N c , r eff , and liquid water path (LWP) are positively correlated to $\bar{κ}$ and aerosol number concentration (N a ) while cloud fractional cover (CFC) is insensitive to $\bar{κ}$ and aerosol size distributions for the two cases. The realistic changes to aerosol size distribution (number concentration, width, and the geometrical diameter) with the same meteorology state allow us to investigate aerosol effects on cloud properties without meteorological feedback. We also use the LES results to evaluate cloud properties from two reanalysis products, ERA5 and MERRA-2. Compared to LES, the ERA5 is able to capture the time evolution of LWP and total cloud coverage within the study domain during both CAO cases while MERRA-2 underestimates them. Other/Unknown Material North Atlantic SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Merra ENVELOPE(12.615,12.615,65.816,65.816) Journal of the Atmospheric Sciences 80 4 1025 1045 |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
spellingShingle |
54 ENVIRONMENTAL SCIENCES Li, Xiang-Yu Wang, Hailong Chen, Jingyi Endo, Satoshi Kirschler, Simon Voigt, Christiane Crosbie, Ewan Ziemba, Luke D. Painemal, David Cairns, Brian Hair, Johnathan W. Corral, Andrea F. Robinson, Claire Dadashazar, Hossein Sorooshian, Armin Chen, Gao Ferrare, Richard Anthony Kleb, Mary M. Liu, Hongyu Moore, Richard Scarino, Amy Jo Shook, Michael A. Shingler, Taylor J. Thornhill, Kenneth Lee Tornow, Florian Xiao, Heng Zeng, Xubin Large-Eddy Simulations of Marine Boundary Layer Clouds Associated with Cold-Air Outbreaks during the ACTIVATE Campaign. Part II: Aerosol–Meteorology–Cloud Interaction |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
Aerosol effects on micro/macrophysical properties of marine stratocumulus clouds over the western North Atlantic Ocean (WNAO) are investigated using in situ measurements and large-eddy simulations (LES) for two cold-air outbreak (CAO) cases (28 February and 1 March 2020) during the Aerosol Cloud Meteorology Interactions over the Western Atlantic Experiment (ACTIVATE). The LES is able to reproduce the vertical profiles of liquid water content (LWC), effective radius r eff and cloud droplet number concentration N c from fast cloud droplet probe (FCDP) in situ measurements for both cases. Furthermore, we show that aerosols affect cloud properties (N c , r eff , and LWC) via the prescribed bulk hygroscopicity of aerosols ($\bar{κ}$) and aerosol size distribution characteristics. N c , r eff , and liquid water path (LWP) are positively correlated to $\bar{κ}$ and aerosol number concentration (N a ) while cloud fractional cover (CFC) is insensitive to $\bar{κ}$ and aerosol size distributions for the two cases. The realistic changes to aerosol size distribution (number concentration, width, and the geometrical diameter) with the same meteorology state allow us to investigate aerosol effects on cloud properties without meteorological feedback. We also use the LES results to evaluate cloud properties from two reanalysis products, ERA5 and MERRA-2. Compared to LES, the ERA5 is able to capture the time evolution of LWP and total cloud coverage within the study domain during both CAO cases while MERRA-2 underestimates them. |
author |
Li, Xiang-Yu Wang, Hailong Chen, Jingyi Endo, Satoshi Kirschler, Simon Voigt, Christiane Crosbie, Ewan Ziemba, Luke D. Painemal, David Cairns, Brian Hair, Johnathan W. Corral, Andrea F. Robinson, Claire Dadashazar, Hossein Sorooshian, Armin Chen, Gao Ferrare, Richard Anthony Kleb, Mary M. Liu, Hongyu Moore, Richard Scarino, Amy Jo Shook, Michael A. Shingler, Taylor J. Thornhill, Kenneth Lee Tornow, Florian Xiao, Heng Zeng, Xubin |
author_facet |
Li, Xiang-Yu Wang, Hailong Chen, Jingyi Endo, Satoshi Kirschler, Simon Voigt, Christiane Crosbie, Ewan Ziemba, Luke D. Painemal, David Cairns, Brian Hair, Johnathan W. Corral, Andrea F. Robinson, Claire Dadashazar, Hossein Sorooshian, Armin Chen, Gao Ferrare, Richard Anthony Kleb, Mary M. Liu, Hongyu Moore, Richard Scarino, Amy Jo Shook, Michael A. Shingler, Taylor J. Thornhill, Kenneth Lee Tornow, Florian Xiao, Heng Zeng, Xubin |
author_sort |
Li, Xiang-Yu |
title |
Large-Eddy Simulations of Marine Boundary Layer Clouds Associated with Cold-Air Outbreaks during the ACTIVATE Campaign. Part II: Aerosol–Meteorology–Cloud Interaction |
title_short |
Large-Eddy Simulations of Marine Boundary Layer Clouds Associated with Cold-Air Outbreaks during the ACTIVATE Campaign. Part II: Aerosol–Meteorology–Cloud Interaction |
title_full |
Large-Eddy Simulations of Marine Boundary Layer Clouds Associated with Cold-Air Outbreaks during the ACTIVATE Campaign. Part II: Aerosol–Meteorology–Cloud Interaction |
title_fullStr |
Large-Eddy Simulations of Marine Boundary Layer Clouds Associated with Cold-Air Outbreaks during the ACTIVATE Campaign. Part II: Aerosol–Meteorology–Cloud Interaction |
title_full_unstemmed |
Large-Eddy Simulations of Marine Boundary Layer Clouds Associated with Cold-Air Outbreaks during the ACTIVATE Campaign. Part II: Aerosol–Meteorology–Cloud Interaction |
title_sort |
large-eddy simulations of marine boundary layer clouds associated with cold-air outbreaks during the activate campaign. part ii: aerosol–meteorology–cloud interaction |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1973245 https://www.osti.gov/biblio/1973245 https://doi.org/10.1175/jas-d-21-0324.1 |
long_lat |
ENVELOPE(12.615,12.615,65.816,65.816) |
geographic |
Merra |
geographic_facet |
Merra |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://www.osti.gov/servlets/purl/1973245 https://www.osti.gov/biblio/1973245 https://doi.org/10.1175/jas-d-21-0324.1 doi:10.1175/jas-d-21-0324.1 |
op_doi |
https://doi.org/10.1175/jas-d-21-0324.1 |
container_title |
Journal of the Atmospheric Sciences |
container_volume |
80 |
container_issue |
4 |
container_start_page |
1025 |
op_container_end_page |
1045 |
_version_ |
1772817451263721472 |