Modelling mixed-phase clouds with the large-eddy model UCLALES–SALSA
The large-eddy model UCLALES–SALSA, with an exceptionally detailed aerosol description for both aerosol number and chemical composition, has been extended for ice and mixed-phase clouds. Comparison to a previous mixed-phase cloud model intercomparison study confirmed the accuracy of newly implemente...
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Online Access: | https://doi.org/10.5194/acp-20-11639-2020 https://acp.copernicus.org/articles/20/11639/2020/ |
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ftcopernicus:oai:publications.copernicus.org:acp82523 2023-05-15T15:01:24+02:00 Modelling mixed-phase clouds with the large-eddy model UCLALES–SALSA Ahola, Jaakko Korhonen, Hannele Tonttila, Juha Romakkaniemi, Sami Kokkola, Harri Raatikainen, Tomi 2020-10-14 application/pdf https://doi.org/10.5194/acp-20-11639-2020 https://acp.copernicus.org/articles/20/11639/2020/ eng eng doi:10.5194/acp-20-11639-2020 https://acp.copernicus.org/articles/20/11639/2020/ eISSN: 1680-7324 Text 2020 ftcopernicus https://doi.org/10.5194/acp-20-11639-2020 2020-10-19T16:22:13Z The large-eddy model UCLALES–SALSA, with an exceptionally detailed aerosol description for both aerosol number and chemical composition, has been extended for ice and mixed-phase clouds. Comparison to a previous mixed-phase cloud model intercomparison study confirmed the accuracy of newly implemented ice microphysics. A further simulation with a heterogeneous ice nucleation scheme, in which ice-nucleating particles (INPs) are also a prognostic variable, captured the typical layered structure of Arctic mid-altitude mixed-phase cloud: a liquid layer near cloud top and ice within and below the liquid layer. In addition, the simulation showed a realistic freezing rate of droplets within the vertical cloud structure. The represented detailed sectional ice microphysics with prognostic aerosols is crucially important in reproducing mixed-phase clouds. Text Arctic Copernicus Publications: E-Journals Arctic Atmospheric Chemistry and Physics 20 19 11639 11654 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
The large-eddy model UCLALES–SALSA, with an exceptionally detailed aerosol description for both aerosol number and chemical composition, has been extended for ice and mixed-phase clouds. Comparison to a previous mixed-phase cloud model intercomparison study confirmed the accuracy of newly implemented ice microphysics. A further simulation with a heterogeneous ice nucleation scheme, in which ice-nucleating particles (INPs) are also a prognostic variable, captured the typical layered structure of Arctic mid-altitude mixed-phase cloud: a liquid layer near cloud top and ice within and below the liquid layer. In addition, the simulation showed a realistic freezing rate of droplets within the vertical cloud structure. The represented detailed sectional ice microphysics with prognostic aerosols is crucially important in reproducing mixed-phase clouds. |
format |
Text |
author |
Ahola, Jaakko Korhonen, Hannele Tonttila, Juha Romakkaniemi, Sami Kokkola, Harri Raatikainen, Tomi |
spellingShingle |
Ahola, Jaakko Korhonen, Hannele Tonttila, Juha Romakkaniemi, Sami Kokkola, Harri Raatikainen, Tomi Modelling mixed-phase clouds with the large-eddy model UCLALES–SALSA |
author_facet |
Ahola, Jaakko Korhonen, Hannele Tonttila, Juha Romakkaniemi, Sami Kokkola, Harri Raatikainen, Tomi |
author_sort |
Ahola, Jaakko |
title |
Modelling mixed-phase clouds with the large-eddy model UCLALES–SALSA |
title_short |
Modelling mixed-phase clouds with the large-eddy model UCLALES–SALSA |
title_full |
Modelling mixed-phase clouds with the large-eddy model UCLALES–SALSA |
title_fullStr |
Modelling mixed-phase clouds with the large-eddy model UCLALES–SALSA |
title_full_unstemmed |
Modelling mixed-phase clouds with the large-eddy model UCLALES–SALSA |
title_sort |
modelling mixed-phase clouds with the large-eddy model uclales–salsa |
publishDate |
2020 |
url |
https://doi.org/10.5194/acp-20-11639-2020 https://acp.copernicus.org/articles/20/11639/2020/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-20-11639-2020 https://acp.copernicus.org/articles/20/11639/2020/ |
op_doi |
https://doi.org/10.5194/acp-20-11639-2020 |
container_title |
Atmospheric Chemistry and Physics |
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20 |
container_issue |
19 |
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11639 |
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11654 |
_version_ |
1766333436328411136 |