Simulating the effects of Ice-nucleating particles in Antarctica in COSMO-CLM2
The remoteness of the Antarctic continent has important implications for the microphysical properties of clouds: In particular, the rare abundance of ice-nucleating particles (INP) limits the primary nucleation of ice crystals. Yet, persistent mixed-phase clouds with ice crystal number concentration...
Main Authors: | , , , , , , , |
---|---|
Format: | Conference Object |
Language: | English |
Published: |
2023
|
Subjects: | |
Online Access: | https://biblio.ugent.be/publication/01GXN6KS69F987NHJH3A74294Y http://hdl.handle.net/1854/LU-01GXN6KS69F987NHJH3A74294Y https://doi.org/10.5194/egusphere-egu23-14418 https://biblio.ugent.be/publication/01GXN6KS69F987NHJH3A74294Y/file/01GXN6NDKDQTPM2WSWJG7FTRS8 |
id |
ftunivgent:oai:archive.ugent.be:01GXN6KS69F987NHJH3A74294Y |
---|---|
record_format |
openpolar |
spelling |
ftunivgent:oai:archive.ugent.be:01GXN6KS69F987NHJH3A74294Y 2023-12-03T10:11:14+01:00 Simulating the effects of Ice-nucleating particles in Antarctica in COSMO-CLM2 Sauerland, Florian Souverijns, Niels Possner, Anna Wex, Heike Van Overmeiren, Preben Mangold, Alexander Van Weverberg, Kwinten van Lipzig, Nicole 2023 application/pdf https://biblio.ugent.be/publication/01GXN6KS69F987NHJH3A74294Y http://hdl.handle.net/1854/LU-01GXN6KS69F987NHJH3A74294Y https://doi.org/10.5194/egusphere-egu23-14418 https://biblio.ugent.be/publication/01GXN6KS69F987NHJH3A74294Y/file/01GXN6NDKDQTPM2WSWJG7FTRS8 eng eng https://biblio.ugent.be/publication/01GXN6KS69F987NHJH3A74294Y http://hdl.handle.net/1854/LU-01GXN6KS69F987NHJH3A74294Y http://doi.org/10.5194/egusphere-egu23-14418 https://biblio.ugent.be/publication/01GXN6KS69F987NHJH3A74294Y/file/01GXN6NDKDQTPM2WSWJG7FTRS8 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) info:eu-repo/semantics/openAccess EGU General Assembly 2023, Abstracts Earth and Environmental Sciences conference info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion 2023 ftunivgent https://doi.org/10.5194/egusphere-egu23-14418 2023-11-08T23:07:07Z The remoteness of the Antarctic continent has important implications for the microphysical properties of clouds: In particular, the rare abundance of ice-nucleating particles (INP) limits the primary nucleation of ice crystals. Yet, persistent mixed-phase clouds with ice crystal number concentrations of 0.1-1l-1 are still observed in the Arctic and Antarctic. However, the ability of regional climate models to reproduce these mixed-phase clouds remains limited, much like the knowledge about their climatological effects. Thus, we added a module to the regional climate model COSMO-CLM² aimed at improving the parametrisation of the aerosol-cycle, which allows us to prescribe different concentrations of INPs. We examined the model response to different concentrations by running it in an area around the Belgian Princess Elisabeth Station in Dronning Maud Land for one month and with four different concentration settings: The first, corresponding to the low end of INP concentrations we observed at the station, the second, corresponding to the high end of INP concentrations we observed at the station, and the third and fourth, to the low and high end of continental observations. The performance was evaluated by comparing the simulation results with radar and ceilometer observations taken at the station. Finally, we analysed the differences between the four simulations to determine the overall sensitivity of the model to variability in INP concentrations, which allows us to draw conclusions about the importance of accurately simulating processes related to ice nucleation, and about the climatological implications that a change in aerosol concentrations would have. Conference Object Antarc* Antarctic Antarctica Arctic Dronning Maud Land Ghent University Academic Bibliography Arctic Antarctic The Antarctic Dronning Maud Land |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Earth and Environmental Sciences |
spellingShingle |
Earth and Environmental Sciences Sauerland, Florian Souverijns, Niels Possner, Anna Wex, Heike Van Overmeiren, Preben Mangold, Alexander Van Weverberg, Kwinten van Lipzig, Nicole Simulating the effects of Ice-nucleating particles in Antarctica in COSMO-CLM2 |
topic_facet |
Earth and Environmental Sciences |
description |
The remoteness of the Antarctic continent has important implications for the microphysical properties of clouds: In particular, the rare abundance of ice-nucleating particles (INP) limits the primary nucleation of ice crystals. Yet, persistent mixed-phase clouds with ice crystal number concentrations of 0.1-1l-1 are still observed in the Arctic and Antarctic. However, the ability of regional climate models to reproduce these mixed-phase clouds remains limited, much like the knowledge about their climatological effects. Thus, we added a module to the regional climate model COSMO-CLM² aimed at improving the parametrisation of the aerosol-cycle, which allows us to prescribe different concentrations of INPs. We examined the model response to different concentrations by running it in an area around the Belgian Princess Elisabeth Station in Dronning Maud Land for one month and with four different concentration settings: The first, corresponding to the low end of INP concentrations we observed at the station, the second, corresponding to the high end of INP concentrations we observed at the station, and the third and fourth, to the low and high end of continental observations. The performance was evaluated by comparing the simulation results with radar and ceilometer observations taken at the station. Finally, we analysed the differences between the four simulations to determine the overall sensitivity of the model to variability in INP concentrations, which allows us to draw conclusions about the importance of accurately simulating processes related to ice nucleation, and about the climatological implications that a change in aerosol concentrations would have. |
format |
Conference Object |
author |
Sauerland, Florian Souverijns, Niels Possner, Anna Wex, Heike Van Overmeiren, Preben Mangold, Alexander Van Weverberg, Kwinten van Lipzig, Nicole |
author_facet |
Sauerland, Florian Souverijns, Niels Possner, Anna Wex, Heike Van Overmeiren, Preben Mangold, Alexander Van Weverberg, Kwinten van Lipzig, Nicole |
author_sort |
Sauerland, Florian |
title |
Simulating the effects of Ice-nucleating particles in Antarctica in COSMO-CLM2 |
title_short |
Simulating the effects of Ice-nucleating particles in Antarctica in COSMO-CLM2 |
title_full |
Simulating the effects of Ice-nucleating particles in Antarctica in COSMO-CLM2 |
title_fullStr |
Simulating the effects of Ice-nucleating particles in Antarctica in COSMO-CLM2 |
title_full_unstemmed |
Simulating the effects of Ice-nucleating particles in Antarctica in COSMO-CLM2 |
title_sort |
simulating the effects of ice-nucleating particles in antarctica in cosmo-clm2 |
publishDate |
2023 |
url |
https://biblio.ugent.be/publication/01GXN6KS69F987NHJH3A74294Y http://hdl.handle.net/1854/LU-01GXN6KS69F987NHJH3A74294Y https://doi.org/10.5194/egusphere-egu23-14418 https://biblio.ugent.be/publication/01GXN6KS69F987NHJH3A74294Y/file/01GXN6NDKDQTPM2WSWJG7FTRS8 |
geographic |
Arctic Antarctic The Antarctic Dronning Maud Land |
geographic_facet |
Arctic Antarctic The Antarctic Dronning Maud Land |
genre |
Antarc* Antarctic Antarctica Arctic Dronning Maud Land |
genre_facet |
Antarc* Antarctic Antarctica Arctic Dronning Maud Land |
op_source |
EGU General Assembly 2023, Abstracts |
op_relation |
https://biblio.ugent.be/publication/01GXN6KS69F987NHJH3A74294Y http://hdl.handle.net/1854/LU-01GXN6KS69F987NHJH3A74294Y http://doi.org/10.5194/egusphere-egu23-14418 https://biblio.ugent.be/publication/01GXN6KS69F987NHJH3A74294Y/file/01GXN6NDKDQTPM2WSWJG7FTRS8 |
op_rights |
Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/egusphere-egu23-14418 |
_version_ |
1784276625824677888 |