Potential Link Between Ice Nucleation and Climate Model Spread in Arctic Amplification ...
Arctic amplification (AA) is simulated by all global climate models, however the spread in the degree of projected warming is large and the underlying mechanisms driving it are poorly understood. The impact of the temperature dependence of immersion freezing on cloud feedbacks and AA is studied usin...
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ftdatacite:10.13016/m253iv-ezlo 2023-08-27T04:07:08+02:00 Potential Link Between Ice Nucleation and Climate Model Spread in Arctic Amplification ... Tan, Ivy Barahona, Donifan Coopman, Quentin 2022 https://dx.doi.org/10.13016/m253iv-ezlo https://mdsoar.org/handle/11603/27023 unknown AGU Public Domain Mark 1.0 This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. http://creativecommons.org/publicdomain/mark/1.0/ CreativeWork article 2022 ftdatacite https://doi.org/10.13016/m253iv-ezlo 2023-08-07T14:24:23Z Arctic amplification (AA) is simulated by all global climate models, however the spread in the degree of projected warming is large and the underlying mechanisms driving it are poorly understood. The impact of the temperature dependence of immersion freezing on cloud feedbacks and AA is studied using NASA's GEOS-5 model. Parameterizations that exhibit low ice-nucleating particle (INP) concentrations in the high Arctic during summer are found to weaken the cloud-phase feedback. This allows sunlight to readily melt sea-ice in the summer, which decreases the stability of the lower troposphere, causing a decrease in wintertime cloud fraction over open ocean. Arctic amplification was found to span from ∼1.4 to >2.6, which spans 30% of the spread in AA in the coupled model intercomparison project models, depending on the temperature dependence of immersion freezing. These results suggest that summertime INP concentrations may provide an observational constraint on AA ... Article in Journal/Newspaper Arctic Sea ice DataCite Metadata Store (German National Library of Science and Technology) Arctic |
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DataCite Metadata Store (German National Library of Science and Technology) |
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description |
Arctic amplification (AA) is simulated by all global climate models, however the spread in the degree of projected warming is large and the underlying mechanisms driving it are poorly understood. The impact of the temperature dependence of immersion freezing on cloud feedbacks and AA is studied using NASA's GEOS-5 model. Parameterizations that exhibit low ice-nucleating particle (INP) concentrations in the high Arctic during summer are found to weaken the cloud-phase feedback. This allows sunlight to readily melt sea-ice in the summer, which decreases the stability of the lower troposphere, causing a decrease in wintertime cloud fraction over open ocean. Arctic amplification was found to span from ∼1.4 to >2.6, which spans 30% of the spread in AA in the coupled model intercomparison project models, depending on the temperature dependence of immersion freezing. These results suggest that summertime INP concentrations may provide an observational constraint on AA ... |
format |
Article in Journal/Newspaper |
author |
Tan, Ivy Barahona, Donifan Coopman, Quentin |
spellingShingle |
Tan, Ivy Barahona, Donifan Coopman, Quentin Potential Link Between Ice Nucleation and Climate Model Spread in Arctic Amplification ... |
author_facet |
Tan, Ivy Barahona, Donifan Coopman, Quentin |
author_sort |
Tan, Ivy |
title |
Potential Link Between Ice Nucleation and Climate Model Spread in Arctic Amplification ... |
title_short |
Potential Link Between Ice Nucleation and Climate Model Spread in Arctic Amplification ... |
title_full |
Potential Link Between Ice Nucleation and Climate Model Spread in Arctic Amplification ... |
title_fullStr |
Potential Link Between Ice Nucleation and Climate Model Spread in Arctic Amplification ... |
title_full_unstemmed |
Potential Link Between Ice Nucleation and Climate Model Spread in Arctic Amplification ... |
title_sort |
potential link between ice nucleation and climate model spread in arctic amplification ... |
publisher |
AGU |
publishDate |
2022 |
url |
https://dx.doi.org/10.13016/m253iv-ezlo https://mdsoar.org/handle/11603/27023 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_rights |
Public Domain Mark 1.0 This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. http://creativecommons.org/publicdomain/mark/1.0/ |
op_doi |
https://doi.org/10.13016/m253iv-ezlo |
_version_ |
1775347907439886336 |