Modelling the impact of cloud condensation and ice nuclei on the near-surface climate of Dronning Maud Land (East Antarctic) using the regional climate model COSMO-CLM2
By serving as condensation and ice nuclei, aerosols play a vital role in the formation of clouds. This has significant implications for the radiation balance and precipitation amounts over the Antarctic Ice Sheet, where type and amount of aerosols differ significantly from other places because of it...
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ftunivgent:oai:archive.ugent.be:8748207 2023-06-11T04:04:26+02:00 Modelling the impact of cloud condensation and ice nuclei on the near-surface climate of Dronning Maud Land (East Antarctic) using the regional climate model COSMO-CLM2 Sauerland, Florian Van Lipzig, Nicole Souverijns, Niels Mangold, Alexander Van Overmeiren, Preben Wex, Heike 2022 application/pdf https://biblio.ugent.be/publication/8748207 http://hdl.handle.net/1854/LU-8748207 https://doi.org/10.5194/egusphere-egu22-12863 https://biblio.ugent.be/publication/8748207/file/8758985 eng eng European Geosciences Union https://biblio.ugent.be/publication/8748207 http://hdl.handle.net/1854/LU-8748207 http://dx.doi.org/10.5194/egusphere-egu22-12863 https://biblio.ugent.be/publication/8748207/file/8758985 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) info:eu-repo/semantics/openAccess EGU General Assembly 2022, Abstracts Earth and Environmental Sciences conference info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion 2022 ftunivgent https://doi.org/10.5194/egusphere-egu22-12863 2023-05-10T22:55:30Z By serving as condensation and ice nuclei, aerosols play a vital role in the formation of clouds. This has significant implications for the radiation balance and precipitation amounts over the Antarctic Ice Sheet, where type and amount of aerosols differ significantly from other places because of its remote location. However, that is also the reason observations are sparse, and consequently, few studies exist examining this effect. Recently, a module was added to the COSMO-CLM² regional climate model to account for the aerosol-cycle. The model was integrated for the region around the Princess Elisabeth Antarctic research station (PEA) in Dronning Maud Land for a period of 10 days in January 2016, of which the first 3 days were discarded. Varying cloud condensation and ice nuclei were prescribed to the model, based on observations from PEA. The model output was compared to observations of cloud structure and precipitation amounts taken at PEA, as well as the unmodified COSMO-CLM² model. The model integrations indicate that the number of ice nuclei has a significant impact on the microphysical composition of clouds, with higher numbers being associated with a lower amount of liquid water content of clouds and higher precipitation amounts. Additional runs are performed to confirm and extend these findings for an entire year. Recent measurements of ice nuclei particle concentrations obtained during two austral summers are also considered. Moreover, we analysed how atmospheric dynamics affect the cloud-aerosol interaction by analysing the model sensitivity for different weather regimes. Conference Object Antarc* Antarctic Dronning Maud Land Ice Sheet Ghent University Academic Bibliography Antarctic Austral Dronning Maud Land The Antarctic |
institution |
Open Polar |
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Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Earth and Environmental Sciences |
spellingShingle |
Earth and Environmental Sciences Sauerland, Florian Van Lipzig, Nicole Souverijns, Niels Mangold, Alexander Van Overmeiren, Preben Wex, Heike Modelling the impact of cloud condensation and ice nuclei on the near-surface climate of Dronning Maud Land (East Antarctic) using the regional climate model COSMO-CLM2 |
topic_facet |
Earth and Environmental Sciences |
description |
By serving as condensation and ice nuclei, aerosols play a vital role in the formation of clouds. This has significant implications for the radiation balance and precipitation amounts over the Antarctic Ice Sheet, where type and amount of aerosols differ significantly from other places because of its remote location. However, that is also the reason observations are sparse, and consequently, few studies exist examining this effect. Recently, a module was added to the COSMO-CLM² regional climate model to account for the aerosol-cycle. The model was integrated for the region around the Princess Elisabeth Antarctic research station (PEA) in Dronning Maud Land for a period of 10 days in January 2016, of which the first 3 days were discarded. Varying cloud condensation and ice nuclei were prescribed to the model, based on observations from PEA. The model output was compared to observations of cloud structure and precipitation amounts taken at PEA, as well as the unmodified COSMO-CLM² model. The model integrations indicate that the number of ice nuclei has a significant impact on the microphysical composition of clouds, with higher numbers being associated with a lower amount of liquid water content of clouds and higher precipitation amounts. Additional runs are performed to confirm and extend these findings for an entire year. Recent measurements of ice nuclei particle concentrations obtained during two austral summers are also considered. Moreover, we analysed how atmospheric dynamics affect the cloud-aerosol interaction by analysing the model sensitivity for different weather regimes. |
format |
Conference Object |
author |
Sauerland, Florian Van Lipzig, Nicole Souverijns, Niels Mangold, Alexander Van Overmeiren, Preben Wex, Heike |
author_facet |
Sauerland, Florian Van Lipzig, Nicole Souverijns, Niels Mangold, Alexander Van Overmeiren, Preben Wex, Heike |
author_sort |
Sauerland, Florian |
title |
Modelling the impact of cloud condensation and ice nuclei on the near-surface climate of Dronning Maud Land (East Antarctic) using the regional climate model COSMO-CLM2 |
title_short |
Modelling the impact of cloud condensation and ice nuclei on the near-surface climate of Dronning Maud Land (East Antarctic) using the regional climate model COSMO-CLM2 |
title_full |
Modelling the impact of cloud condensation and ice nuclei on the near-surface climate of Dronning Maud Land (East Antarctic) using the regional climate model COSMO-CLM2 |
title_fullStr |
Modelling the impact of cloud condensation and ice nuclei on the near-surface climate of Dronning Maud Land (East Antarctic) using the regional climate model COSMO-CLM2 |
title_full_unstemmed |
Modelling the impact of cloud condensation and ice nuclei on the near-surface climate of Dronning Maud Land (East Antarctic) using the regional climate model COSMO-CLM2 |
title_sort |
modelling the impact of cloud condensation and ice nuclei on the near-surface climate of dronning maud land (east antarctic) using the regional climate model cosmo-clm2 |
publisher |
European Geosciences Union |
publishDate |
2022 |
url |
https://biblio.ugent.be/publication/8748207 http://hdl.handle.net/1854/LU-8748207 https://doi.org/10.5194/egusphere-egu22-12863 https://biblio.ugent.be/publication/8748207/file/8758985 |
geographic |
Antarctic Austral Dronning Maud Land The Antarctic |
geographic_facet |
Antarctic Austral Dronning Maud Land The Antarctic |
genre |
Antarc* Antarctic Dronning Maud Land Ice Sheet |
genre_facet |
Antarc* Antarctic Dronning Maud Land Ice Sheet |
op_source |
EGU General Assembly 2022, Abstracts |
op_relation |
https://biblio.ugent.be/publication/8748207 http://hdl.handle.net/1854/LU-8748207 http://dx.doi.org/10.5194/egusphere-egu22-12863 https://biblio.ugent.be/publication/8748207/file/8758985 |
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-egu22-12863 |
_version_ |
1768387760037560320 |