Centennial Memory of the Arctic Ocean for Future Arctic Climate Recovery in Response to a Carbon Dioxide Removal
Abstract Under the ongoing and potential risks from anthropogenic warming, net negative carbon dioxide (CO2) emissions are inevitable to stabilize or recover the Earth's climate. It is important not only to understand climate irreversibility in response to CO2 removal but also to understand how...
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ftdoajarticles:oai:doaj.org/article:decc44e9a47c47dbbc50dfd5afea9558 2023-05-15T14:32:22+02:00 Centennial Memory of the Arctic Ocean for Future Arctic Climate Recovery in Response to a Carbon Dioxide Removal Ji‐Hoon Oh Soon‐Il An Jongsoo Shin Jong‐Seong Kug 2022-08-01T00:00:00Z https://doi.org/10.1029/2022EF002804 https://doaj.org/article/decc44e9a47c47dbbc50dfd5afea9558 EN eng Wiley https://doi.org/10.1029/2022EF002804 https://doaj.org/toc/2328-4277 2328-4277 doi:10.1029/2022EF002804 https://doaj.org/article/decc44e9a47c47dbbc50dfd5afea9558 Earth's Future, Vol 10, Iss 8, Pp n/a-n/a (2022) Arctic AMOC climate change CO2 removal climate reversibility Arctic climate change Environmental sciences GE1-350 Ecology QH540-549.5 article 2022 ftdoajarticles https://doi.org/10.1029/2022EF002804 2022-12-30T22:14:37Z Abstract Under the ongoing and potential risks from anthropogenic warming, net negative carbon dioxide (CO2) emissions are inevitable to stabilize or recover the Earth's climate. It is important not only to understand climate irreversibility in response to CO2 removal but also to understand how fast each component of the climate system will recover to its original state. Based on idealized CO2 ramp‐up and ‐down ensemble simulations, here we show that the initial buoyancy states of the Arctic Ocean, such as upper ocean salinity and density, are vital to determining how fast Arctic and global mean temperatures will recover on a centennial time scale. The denser initial Arctic oceanic condition is linked to faster recovery of the Atlantic meridional overturning circulation (AMOC) in the ramp‐down period, which is further accelerated by strong positive AMOC‐salt‐advection feedback. Faster AMOC recovery can delay Arctic temperature recovery by transporting warmer water into the northern subpolar Atlantic during the ramp‐down period. In addition, denser Arctic water enhances vertical mixing, which also results in delayed Arctic cooling under a strong vertical temperature gradient in the subpolar‐to‐polar Atlantic. Our findings suggest that the Arctic's initial states have a centennial memory for the future Arctic and global climate changes. Article in Journal/Newspaper Arctic Arctic Ocean Climate change Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean The Ramp ENVELOPE(-38.305,-38.305,-53.990,-53.990) Earth's Future 10 8 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic AMOC climate change CO2 removal climate reversibility Arctic climate change Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
Arctic AMOC climate change CO2 removal climate reversibility Arctic climate change Environmental sciences GE1-350 Ecology QH540-549.5 Ji‐Hoon Oh Soon‐Il An Jongsoo Shin Jong‐Seong Kug Centennial Memory of the Arctic Ocean for Future Arctic Climate Recovery in Response to a Carbon Dioxide Removal |
topic_facet |
Arctic AMOC climate change CO2 removal climate reversibility Arctic climate change Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
Abstract Under the ongoing and potential risks from anthropogenic warming, net negative carbon dioxide (CO2) emissions are inevitable to stabilize or recover the Earth's climate. It is important not only to understand climate irreversibility in response to CO2 removal but also to understand how fast each component of the climate system will recover to its original state. Based on idealized CO2 ramp‐up and ‐down ensemble simulations, here we show that the initial buoyancy states of the Arctic Ocean, such as upper ocean salinity and density, are vital to determining how fast Arctic and global mean temperatures will recover on a centennial time scale. The denser initial Arctic oceanic condition is linked to faster recovery of the Atlantic meridional overturning circulation (AMOC) in the ramp‐down period, which is further accelerated by strong positive AMOC‐salt‐advection feedback. Faster AMOC recovery can delay Arctic temperature recovery by transporting warmer water into the northern subpolar Atlantic during the ramp‐down period. In addition, denser Arctic water enhances vertical mixing, which also results in delayed Arctic cooling under a strong vertical temperature gradient in the subpolar‐to‐polar Atlantic. Our findings suggest that the Arctic's initial states have a centennial memory for the future Arctic and global climate changes. |
format |
Article in Journal/Newspaper |
author |
Ji‐Hoon Oh Soon‐Il An Jongsoo Shin Jong‐Seong Kug |
author_facet |
Ji‐Hoon Oh Soon‐Il An Jongsoo Shin Jong‐Seong Kug |
author_sort |
Ji‐Hoon Oh |
title |
Centennial Memory of the Arctic Ocean for Future Arctic Climate Recovery in Response to a Carbon Dioxide Removal |
title_short |
Centennial Memory of the Arctic Ocean for Future Arctic Climate Recovery in Response to a Carbon Dioxide Removal |
title_full |
Centennial Memory of the Arctic Ocean for Future Arctic Climate Recovery in Response to a Carbon Dioxide Removal |
title_fullStr |
Centennial Memory of the Arctic Ocean for Future Arctic Climate Recovery in Response to a Carbon Dioxide Removal |
title_full_unstemmed |
Centennial Memory of the Arctic Ocean for Future Arctic Climate Recovery in Response to a Carbon Dioxide Removal |
title_sort |
centennial memory of the arctic ocean for future arctic climate recovery in response to a carbon dioxide removal |
publisher |
Wiley |
publishDate |
2022 |
url |
https://doi.org/10.1029/2022EF002804 https://doaj.org/article/decc44e9a47c47dbbc50dfd5afea9558 |
long_lat |
ENVELOPE(-38.305,-38.305,-53.990,-53.990) |
geographic |
Arctic Arctic Ocean The Ramp |
geographic_facet |
Arctic Arctic Ocean The Ramp |
genre |
Arctic Arctic Ocean Climate change |
genre_facet |
Arctic Arctic Ocean Climate change |
op_source |
Earth's Future, Vol 10, Iss 8, Pp n/a-n/a (2022) |
op_relation |
https://doi.org/10.1029/2022EF002804 https://doaj.org/toc/2328-4277 2328-4277 doi:10.1029/2022EF002804 https://doaj.org/article/decc44e9a47c47dbbc50dfd5afea9558 |
op_doi |
https://doi.org/10.1029/2022EF002804 |
container_title |
Earth's Future |
container_volume |
10 |
container_issue |
8 |
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1766305787805696000 |