Sensitivity of Air-Sea Heat Exchange in Cold-Air Outbreaks to Model Resolution and Sea-Ice Distribution
Modeling air-sea interactions during cold air outbreaks poses a major challenge because of the vast range of scales and physical processes involved. Using the Polar WRF model, we investigate the sensitivity of downstream air mass properties to (a) model resolution, (b) the sharpness of the marginal-...
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Online Access: | https://hdl.handle.net/11250/2986668 https://doi.org/10.1029/2020JD033610 |
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ftunivbergen:oai:bora.uib.no:11250/2986668 2023-05-15T18:16:45+02:00 Sensitivity of Air-Sea Heat Exchange in Cold-Air Outbreaks to Model Resolution and Sea-Ice Distribution Spensberger, Clemens Spengler, Thomas 2021 application/pdf https://hdl.handle.net/11250/2986668 https://doi.org/10.1029/2020JD033610 eng eng Wiley Notur/NorStore: nn9624k urn:issn:2169-897X https://hdl.handle.net/11250/2986668 https://doi.org/10.1029/2020JD033610 cristin:1924744 Journal of Geophysical Research: Atmospheres. 2021, 126 (5), e2020JD033610. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2021. The Authors e2020JD033610 Journal of Geophysical Research (JGR): Atmospheres 126 5 Journal article Peer reviewed 2021 ftunivbergen https://doi.org/10.1029/2020JD033610 2023-03-14T17:40:10Z Modeling air-sea interactions during cold air outbreaks poses a major challenge because of the vast range of scales and physical processes involved. Using the Polar WRF model, we investigate the sensitivity of downstream air mass properties to (a) model resolution, (b) the sharpness of the marginal-ice zone (MIZ), and (c) the geometry of the sea ice edge. The resolved sharpness of the MIZ strongly affects peak heat fluxes and the atmospheric water cycle. For sharper MIZs, roll convection is initiated closer to the sea ice edge, increasing both evaporation and precipitation. This yields an increased heat transfer into the atmosphere while the net effect on the atmospheric moisture budget is small. Overall, higher atmospheric resolution increases both the peak and net heat extracted from the ocean. The geometry of the sea ice edge can induce convergence or divergence zones that affect the air-sea exchange. publishedVersion Article in Journal/Newspaper Sea ice University of Bergen: Bergen Open Research Archive (BORA-UiB) Journal of Geophysical Research: Atmospheres 126 5 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
Modeling air-sea interactions during cold air outbreaks poses a major challenge because of the vast range of scales and physical processes involved. Using the Polar WRF model, we investigate the sensitivity of downstream air mass properties to (a) model resolution, (b) the sharpness of the marginal-ice zone (MIZ), and (c) the geometry of the sea ice edge. The resolved sharpness of the MIZ strongly affects peak heat fluxes and the atmospheric water cycle. For sharper MIZs, roll convection is initiated closer to the sea ice edge, increasing both evaporation and precipitation. This yields an increased heat transfer into the atmosphere while the net effect on the atmospheric moisture budget is small. Overall, higher atmospheric resolution increases both the peak and net heat extracted from the ocean. The geometry of the sea ice edge can induce convergence or divergence zones that affect the air-sea exchange. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Spensberger, Clemens Spengler, Thomas |
spellingShingle |
Spensberger, Clemens Spengler, Thomas Sensitivity of Air-Sea Heat Exchange in Cold-Air Outbreaks to Model Resolution and Sea-Ice Distribution |
author_facet |
Spensberger, Clemens Spengler, Thomas |
author_sort |
Spensberger, Clemens |
title |
Sensitivity of Air-Sea Heat Exchange in Cold-Air Outbreaks to Model Resolution and Sea-Ice Distribution |
title_short |
Sensitivity of Air-Sea Heat Exchange in Cold-Air Outbreaks to Model Resolution and Sea-Ice Distribution |
title_full |
Sensitivity of Air-Sea Heat Exchange in Cold-Air Outbreaks to Model Resolution and Sea-Ice Distribution |
title_fullStr |
Sensitivity of Air-Sea Heat Exchange in Cold-Air Outbreaks to Model Resolution and Sea-Ice Distribution |
title_full_unstemmed |
Sensitivity of Air-Sea Heat Exchange in Cold-Air Outbreaks to Model Resolution and Sea-Ice Distribution |
title_sort |
sensitivity of air-sea heat exchange in cold-air outbreaks to model resolution and sea-ice distribution |
publisher |
Wiley |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2986668 https://doi.org/10.1029/2020JD033610 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
e2020JD033610 Journal of Geophysical Research (JGR): Atmospheres 126 5 |
op_relation |
Notur/NorStore: nn9624k urn:issn:2169-897X https://hdl.handle.net/11250/2986668 https://doi.org/10.1029/2020JD033610 cristin:1924744 Journal of Geophysical Research: Atmospheres. 2021, 126 (5), e2020JD033610. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2021. The Authors |
op_doi |
https://doi.org/10.1029/2020JD033610 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
126 |
container_issue |
5 |
_version_ |
1766190604011700224 |