Regionally‐Dependent Arctic Sea Ice Recovery to CO2 Removal
Abstract The decline of Arctic sea ice area (SIA) has accelerated in recent decades and is projected to continue in a warming climate. This trend can be reversed by reducing atmospheric CO2 concentrations. A large‐ensemble model experiment, in which atmospheric CO2 concentrations are quadrupled and...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2025-06-01
|
| Series: | Earth's Future |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2024EF005597 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849433267375177728 |
|---|---|
| author | M. Inês Cajada Seok‐Woo Son Jaeyoung Hwang Hyo‐Seok Park Soon‐Il An |
| author_facet | M. Inês Cajada Seok‐Woo Son Jaeyoung Hwang Hyo‐Seok Park Soon‐Il An |
| author_sort | M. Inês Cajada |
| collection | DOAJ |
| description | Abstract The decline of Arctic sea ice area (SIA) has accelerated in recent decades and is projected to continue in a warming climate. This trend can be reversed by reducing atmospheric CO2 concentrations. A large‐ensemble model experiment, in which atmospheric CO2 concentrations are quadrupled and then reduced to the initial state, shows an overall recovery of Arctic SIA by CO2 removal, but at a slower rate than its decline to CO2 increase. The exception is the North Atlantic, where SIA increases rapidly with decreasing CO2 concentrations. The under‐recovery of Central Arctic SIA can be attributed to a slow decrease in Arctic ocean heat storage, due to a lagged ocean cooling and heat transport, and enhanced downward longwave radiation in the Arctic atmosphere, partly due to frequent atmospheric rivers across the Arctic Circle. In contrast, the over‐recovery of North Atlantic SIA is primarily attributed to weakened ocean heat transport by a delayed recovery of the Atlantic Meridional Overturning Circulation (AMOC). This over‐recovery is shown to be model dependent, following each model's AMOC change. Full recovery of Arctic SIA takes over 300 years after CO2 removal. This result suggests that the response of Arctic sea ice to CO2 removal may be spatially inhomogeneous, with different impacts on regional climate, potentially affecting the climate of the Northern Hemisphere mid‐latitudes. |
| format | Article |
| id | doaj-art-13da034ace674bb18de86d46599384c5 |
| institution | Kabale University |
| issn | 2328-4277 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Earth's Future |
| spelling | doaj-art-13da034ace674bb18de86d46599384c52025-08-20T03:27:07ZengWileyEarth's Future2328-42772025-06-01136n/an/a10.1029/2024EF005597Regionally‐Dependent Arctic Sea Ice Recovery to CO2 RemovalM. Inês Cajada0Seok‐Woo Son1Jaeyoung Hwang2Hyo‐Seok Park3Soon‐Il An4School of Earth and Environmental Sciences Seoul National University Seoul Republic of KoreaSchool of Earth and Environmental Sciences Seoul National University Seoul Republic of KoreaSchool of Earth and Environmental Sciences Seoul National University Seoul Republic of KoreaDepartment of Ocean Science and Technology Hanyang University Ansan South KoreaDepartment of Atmospheric Sciences Yonsei University Seoul South KoreaAbstract The decline of Arctic sea ice area (SIA) has accelerated in recent decades and is projected to continue in a warming climate. This trend can be reversed by reducing atmospheric CO2 concentrations. A large‐ensemble model experiment, in which atmospheric CO2 concentrations are quadrupled and then reduced to the initial state, shows an overall recovery of Arctic SIA by CO2 removal, but at a slower rate than its decline to CO2 increase. The exception is the North Atlantic, where SIA increases rapidly with decreasing CO2 concentrations. The under‐recovery of Central Arctic SIA can be attributed to a slow decrease in Arctic ocean heat storage, due to a lagged ocean cooling and heat transport, and enhanced downward longwave radiation in the Arctic atmosphere, partly due to frequent atmospheric rivers across the Arctic Circle. In contrast, the over‐recovery of North Atlantic SIA is primarily attributed to weakened ocean heat transport by a delayed recovery of the Atlantic Meridional Overturning Circulation (AMOC). This over‐recovery is shown to be model dependent, following each model's AMOC change. Full recovery of Arctic SIA takes over 300 years after CO2 removal. This result suggests that the response of Arctic sea ice to CO2 removal may be spatially inhomogeneous, with different impacts on regional climate, potentially affecting the climate of the Northern Hemisphere mid‐latitudes.https://doi.org/10.1029/2024EF005597Arctic sea ice areacarbon dioxide removalAtlantic meridional overturning circulation |
| spellingShingle | M. Inês Cajada Seok‐Woo Son Jaeyoung Hwang Hyo‐Seok Park Soon‐Il An Regionally‐Dependent Arctic Sea Ice Recovery to CO2 Removal Earth's Future Arctic sea ice area carbon dioxide removal Atlantic meridional overturning circulation |
| title | Regionally‐Dependent Arctic Sea Ice Recovery to CO2 Removal |
| title_full | Regionally‐Dependent Arctic Sea Ice Recovery to CO2 Removal |
| title_fullStr | Regionally‐Dependent Arctic Sea Ice Recovery to CO2 Removal |
| title_full_unstemmed | Regionally‐Dependent Arctic Sea Ice Recovery to CO2 Removal |
| title_short | Regionally‐Dependent Arctic Sea Ice Recovery to CO2 Removal |
| title_sort | regionally dependent arctic sea ice recovery to co2 removal |
| topic | Arctic sea ice area carbon dioxide removal Atlantic meridional overturning circulation |
| url | https://doi.org/10.1029/2024EF005597 |
| work_keys_str_mv | AT minescajada regionallydependentarcticseaicerecoverytoco2removal AT seokwooson regionallydependentarcticseaicerecoverytoco2removal AT jaeyounghwang regionallydependentarcticseaicerecoverytoco2removal AT hyoseokpark regionallydependentarcticseaicerecoverytoco2removal AT soonilan regionallydependentarcticseaicerecoverytoco2removal |