Disentangling the Coupled Atmosphere‐Ocean‐Ice Interactions Driving Arctic Sea Ice Response to CO2 Increases
Abstract A novel decomposition of the ocean heat energy that contributes to sea ice melt and growth (ocean‐ice and frazil heat) into components that are driven by surface heat flux and ocean circulation changes is used to isolate the evolving roles of the atmosphere and ocean in the Arctic sea ice l...
Published in: | Journal of Advances in Modeling Earth Systems |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union (AGU)
2020
|
Subjects: | |
Online Access: | https://doi.org/10.1029/2019MS001902 https://doaj.org/article/53007229648a4a4e87860980daa9b8bd |
id |
ftdoajarticles:oai:doaj.org/article:53007229648a4a4e87860980daa9b8bd |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:53007229648a4a4e87860980daa9b8bd 2023-05-15T14:34:16+02:00 Disentangling the Coupled Atmosphere‐Ocean‐Ice Interactions Driving Arctic Sea Ice Response to CO2 Increases Oluwayemi A. Garuba Hansi A. Singh Elizabeth Hunke Philip J. Rasch 2020-11-01T00:00:00Z https://doi.org/10.1029/2019MS001902 https://doaj.org/article/53007229648a4a4e87860980daa9b8bd EN eng American Geophysical Union (AGU) https://doi.org/10.1029/2019MS001902 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2019MS001902 https://doaj.org/article/53007229648a4a4e87860980daa9b8bd Journal of Advances in Modeling Earth Systems, Vol 12, Iss 11, Pp n/a-n/a (2020) atmosphere‐ocean‐ice interaction Arctic polar climate air‐sea interaction ocean dynamics Atlantic meridional overturning circulation Physical geography GB3-5030 Oceanography GC1-1581 article 2020 ftdoajarticles https://doi.org/10.1029/2019MS001902 2022-12-31T07:51:43Z Abstract A novel decomposition of the ocean heat energy that contributes to sea ice melt and growth (ocean‐ice and frazil heat) into components that are driven by surface heat flux and ocean circulation changes is used to isolate the evolving roles of the atmosphere and ocean in the Arctic sea ice loss from CO2 increases. A sea ice volume budget analysis is used to separate the impacts of the anomalous frazil/ocean‐ice heat from those of atmosphere‐ice heat on the evolving Arctic sea ice volume. The role of atmosphere‐ocean coupling in augmenting or curtailing the atmosphere‐ and ocean‐driven sea ice losses is further isolated by comparing the ice volume budget and the anomalous frazil/ocean‐ice heat components in partially and fully coupled experiments. Atmosphere‐ice heat fluxes drive most of Arctic sea ice loss in the first decade following CO2 increase by increasing the sea ice top face melt in summer, while ocean circulation changes drive the loss over the longer term through the anomalous increase of heat transport into the Arctic, which drive decreases in frazil ice growth and sea ice extent in winter. Atmosphere‐ocean coupling in the subpolar Atlantic further supports a negative feedback that attenuates the ocean‐driven sea ice losses over time; by accelerating the weakening of the Atlantic meridional overturning circulation, it causes a large cooling of the subpolar Atlantic and attenuation of the anomalous heat transport into the Arctic in winter, allowing for a seasonal Arctic sea ice in the fully coupled experiment, while the Arctic completely becomes ice free in the partially coupled experiment. Article in Journal/Newspaper Arctic Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Journal of Advances in Modeling Earth Systems 12 11 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
atmosphere‐ocean‐ice interaction Arctic polar climate air‐sea interaction ocean dynamics Atlantic meridional overturning circulation Physical geography GB3-5030 Oceanography GC1-1581 |
spellingShingle |
atmosphere‐ocean‐ice interaction Arctic polar climate air‐sea interaction ocean dynamics Atlantic meridional overturning circulation Physical geography GB3-5030 Oceanography GC1-1581 Oluwayemi A. Garuba Hansi A. Singh Elizabeth Hunke Philip J. Rasch Disentangling the Coupled Atmosphere‐Ocean‐Ice Interactions Driving Arctic Sea Ice Response to CO2 Increases |
topic_facet |
atmosphere‐ocean‐ice interaction Arctic polar climate air‐sea interaction ocean dynamics Atlantic meridional overturning circulation Physical geography GB3-5030 Oceanography GC1-1581 |
description |
Abstract A novel decomposition of the ocean heat energy that contributes to sea ice melt and growth (ocean‐ice and frazil heat) into components that are driven by surface heat flux and ocean circulation changes is used to isolate the evolving roles of the atmosphere and ocean in the Arctic sea ice loss from CO2 increases. A sea ice volume budget analysis is used to separate the impacts of the anomalous frazil/ocean‐ice heat from those of atmosphere‐ice heat on the evolving Arctic sea ice volume. The role of atmosphere‐ocean coupling in augmenting or curtailing the atmosphere‐ and ocean‐driven sea ice losses is further isolated by comparing the ice volume budget and the anomalous frazil/ocean‐ice heat components in partially and fully coupled experiments. Atmosphere‐ice heat fluxes drive most of Arctic sea ice loss in the first decade following CO2 increase by increasing the sea ice top face melt in summer, while ocean circulation changes drive the loss over the longer term through the anomalous increase of heat transport into the Arctic, which drive decreases in frazil ice growth and sea ice extent in winter. Atmosphere‐ocean coupling in the subpolar Atlantic further supports a negative feedback that attenuates the ocean‐driven sea ice losses over time; by accelerating the weakening of the Atlantic meridional overturning circulation, it causes a large cooling of the subpolar Atlantic and attenuation of the anomalous heat transport into the Arctic in winter, allowing for a seasonal Arctic sea ice in the fully coupled experiment, while the Arctic completely becomes ice free in the partially coupled experiment. |
format |
Article in Journal/Newspaper |
author |
Oluwayemi A. Garuba Hansi A. Singh Elizabeth Hunke Philip J. Rasch |
author_facet |
Oluwayemi A. Garuba Hansi A. Singh Elizabeth Hunke Philip J. Rasch |
author_sort |
Oluwayemi A. Garuba |
title |
Disentangling the Coupled Atmosphere‐Ocean‐Ice Interactions Driving Arctic Sea Ice Response to CO2 Increases |
title_short |
Disentangling the Coupled Atmosphere‐Ocean‐Ice Interactions Driving Arctic Sea Ice Response to CO2 Increases |
title_full |
Disentangling the Coupled Atmosphere‐Ocean‐Ice Interactions Driving Arctic Sea Ice Response to CO2 Increases |
title_fullStr |
Disentangling the Coupled Atmosphere‐Ocean‐Ice Interactions Driving Arctic Sea Ice Response to CO2 Increases |
title_full_unstemmed |
Disentangling the Coupled Atmosphere‐Ocean‐Ice Interactions Driving Arctic Sea Ice Response to CO2 Increases |
title_sort |
disentangling the coupled atmosphere‐ocean‐ice interactions driving arctic sea ice response to co2 increases |
publisher |
American Geophysical Union (AGU) |
publishDate |
2020 |
url |
https://doi.org/10.1029/2019MS001902 https://doaj.org/article/53007229648a4a4e87860980daa9b8bd |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Journal of Advances in Modeling Earth Systems, Vol 12, Iss 11, Pp n/a-n/a (2020) |
op_relation |
https://doi.org/10.1029/2019MS001902 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2019MS001902 https://doaj.org/article/53007229648a4a4e87860980daa9b8bd |
op_doi |
https://doi.org/10.1029/2019MS001902 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
12 |
container_issue |
11 |
_version_ |
1766307342370996224 |