The relative impact of cloud condensation nuclei and ice nucleating particle concentrations on phase partitioning in Arctic mixed-phase stratocumulus clouds
This study investigates the interactions between cloud dynamics and aerosols in idealized large-eddy simulations (LES) of Arctic mixed-phase stratocumulus clouds (AMPS) observed at Oliktok Point, Alaska, in April 2015. This case was chosen because it allows the cloud to form in response to radiative...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2018
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-18-17047-2018 https://noa.gwlb.de/receive/cop_mods_00041338 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00040958/acp-18-17047-2018.pdf https://acp.copernicus.org/articles/18/17047/2018/acp-18-17047-2018.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00041338 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00041338 2023-05-15T14:59:24+02:00 The relative impact of cloud condensation nuclei and ice nucleating particle concentrations on phase partitioning in Arctic mixed-phase stratocumulus clouds Solomon, Amy de Boer, Gijs Creamean, Jessie M. McComiskey, Allison Shupe, Matthew D. Maahn, Maximilian Cox, Christopher 2018-12 electronic https://doi.org/10.5194/acp-18-17047-2018 https://noa.gwlb.de/receive/cop_mods_00041338 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00040958/acp-18-17047-2018.pdf https://acp.copernicus.org/articles/18/17047/2018/acp-18-17047-2018.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-18-17047-2018 https://noa.gwlb.de/receive/cop_mods_00041338 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00040958/acp-18-17047-2018.pdf https://acp.copernicus.org/articles/18/17047/2018/acp-18-17047-2018.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2018 ftnonlinearchiv https://doi.org/10.5194/acp-18-17047-2018 2022-02-08T22:41:40Z This study investigates the interactions between cloud dynamics and aerosols in idealized large-eddy simulations (LES) of Arctic mixed-phase stratocumulus clouds (AMPS) observed at Oliktok Point, Alaska, in April 2015. This case was chosen because it allows the cloud to form in response to radiative cooling starting from a cloud-free state, rather than requiring the cloud ice and liquid to adjust to an initial cloudy state. Sensitivity studies are used to identify whether there are buffering feedbacks that limit the impact of aerosol perturbations. The results of this study indicate that perturbations in ice nucleating particles (INPs) dominate over cloud condensation nuclei (CCN) perturbations; i.e., an equivalent fractional decrease in CCN and INPs results in an increase in the cloud-top longwave cooling rate, even though the droplet effective radius increases and the cloud emissivity decreases. The dominant effect of ice in the simulated mixed-phase cloud is a thinning rather than a glaciation, causing the mixed-phase clouds to radiate as a grey body and the radiative properties of the cloud to be more sensitive to aerosol perturbations. It is demonstrated that allowing prognostic CCN and INPs causes a layering of the aerosols, with increased concentrations of CCN above cloud top and increased concentrations of INPs at the base of the cloud-driven mixed layer. This layering contributes to the maintenance of the cloud liquid, which drives the dynamics of the cloud system. Article in Journal/Newspaper Arctic Alaska Niedersächsisches Online-Archiv NOA Arctic Atmospheric Chemistry and Physics 18 23 17047 17059 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Solomon, Amy de Boer, Gijs Creamean, Jessie M. McComiskey, Allison Shupe, Matthew D. Maahn, Maximilian Cox, Christopher The relative impact of cloud condensation nuclei and ice nucleating particle concentrations on phase partitioning in Arctic mixed-phase stratocumulus clouds |
topic_facet |
article Verlagsveröffentlichung |
description |
This study investigates the interactions between cloud dynamics and aerosols in idealized large-eddy simulations (LES) of Arctic mixed-phase stratocumulus clouds (AMPS) observed at Oliktok Point, Alaska, in April 2015. This case was chosen because it allows the cloud to form in response to radiative cooling starting from a cloud-free state, rather than requiring the cloud ice and liquid to adjust to an initial cloudy state. Sensitivity studies are used to identify whether there are buffering feedbacks that limit the impact of aerosol perturbations. The results of this study indicate that perturbations in ice nucleating particles (INPs) dominate over cloud condensation nuclei (CCN) perturbations; i.e., an equivalent fractional decrease in CCN and INPs results in an increase in the cloud-top longwave cooling rate, even though the droplet effective radius increases and the cloud emissivity decreases. The dominant effect of ice in the simulated mixed-phase cloud is a thinning rather than a glaciation, causing the mixed-phase clouds to radiate as a grey body and the radiative properties of the cloud to be more sensitive to aerosol perturbations. It is demonstrated that allowing prognostic CCN and INPs causes a layering of the aerosols, with increased concentrations of CCN above cloud top and increased concentrations of INPs at the base of the cloud-driven mixed layer. This layering contributes to the maintenance of the cloud liquid, which drives the dynamics of the cloud system. |
format |
Article in Journal/Newspaper |
author |
Solomon, Amy de Boer, Gijs Creamean, Jessie M. McComiskey, Allison Shupe, Matthew D. Maahn, Maximilian Cox, Christopher |
author_facet |
Solomon, Amy de Boer, Gijs Creamean, Jessie M. McComiskey, Allison Shupe, Matthew D. Maahn, Maximilian Cox, Christopher |
author_sort |
Solomon, Amy |
title |
The relative impact of cloud condensation nuclei and ice nucleating particle concentrations on phase partitioning in Arctic mixed-phase stratocumulus clouds |
title_short |
The relative impact of cloud condensation nuclei and ice nucleating particle concentrations on phase partitioning in Arctic mixed-phase stratocumulus clouds |
title_full |
The relative impact of cloud condensation nuclei and ice nucleating particle concentrations on phase partitioning in Arctic mixed-phase stratocumulus clouds |
title_fullStr |
The relative impact of cloud condensation nuclei and ice nucleating particle concentrations on phase partitioning in Arctic mixed-phase stratocumulus clouds |
title_full_unstemmed |
The relative impact of cloud condensation nuclei and ice nucleating particle concentrations on phase partitioning in Arctic mixed-phase stratocumulus clouds |
title_sort |
relative impact of cloud condensation nuclei and ice nucleating particle concentrations on phase partitioning in arctic mixed-phase stratocumulus clouds |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-18-17047-2018 https://noa.gwlb.de/receive/cop_mods_00041338 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00040958/acp-18-17047-2018.pdf https://acp.copernicus.org/articles/18/17047/2018/acp-18-17047-2018.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Alaska |
genre_facet |
Arctic Alaska |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-18-17047-2018 https://noa.gwlb.de/receive/cop_mods_00041338 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00040958/acp-18-17047-2018.pdf https://acp.copernicus.org/articles/18/17047/2018/acp-18-17047-2018.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/acp-18-17047-2018 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
18 |
container_issue |
23 |
container_start_page |
17047 |
op_container_end_page |
17059 |
_version_ |
1766331511446962176 |