Twenty-first-century Southern Hemisphere impacts of ozone recovery and climate change from the stratosphere to the ocean
Changes in stratospheric ozone concentrations and increasing concentrations of greenhouse gases (GHGs) alter the temperature structure of the atmosphere and drive changes in the atmospheric and oceanic circulation. We systematically investigate the impacts of ozone recovery and increasing GHGs on th...
Published in: | Weather and Climate Dynamics |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2022
|
Subjects: | |
Online Access: | https://doi.org/10.5194/wcd-3-139-2022 https://noa.gwlb.de/receive/cop_mods_00060078 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00059727/wcd-3-139-2022.pdf https://wcd.copernicus.org/articles/3/139/2022/wcd-3-139-2022.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00060078 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00060078 2024-09-15T17:43:05+00:00 Twenty-first-century Southern Hemisphere impacts of ozone recovery and climate change from the stratosphere to the ocean Ivanciu, Ioana Matthes, Katja Biastoch, Arne Wahl, Sebastian Harlaß, Jan 2022-02 electronic https://doi.org/10.5194/wcd-3-139-2022 https://noa.gwlb.de/receive/cop_mods_00060078 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00059727/wcd-3-139-2022.pdf https://wcd.copernicus.org/articles/3/139/2022/wcd-3-139-2022.pdf eng eng Copernicus Publications Weather and Climate Dynamics -- https://www.weather-climate-dynamics.net/ -- 2698-4016 https://doi.org/10.5194/wcd-3-139-2022 https://noa.gwlb.de/receive/cop_mods_00060078 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00059727/wcd-3-139-2022.pdf https://wcd.copernicus.org/articles/3/139/2022/wcd-3-139-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/wcd-3-139-2022 2024-06-26T04:34:57Z Changes in stratospheric ozone concentrations and increasing concentrations of greenhouse gases (GHGs) alter the temperature structure of the atmosphere and drive changes in the atmospheric and oceanic circulation. We systematically investigate the impacts of ozone recovery and increasing GHGs on the atmospheric and oceanic circulation in the Southern Hemisphere during the twenty-first century using a unique coupled ocean–atmosphere climate model with interactive ozone chemistry and enhanced oceanic resolution. We use the high-emission scenario SSP5-8.5 for GHGs under which the springtime Antarctic total column ozone returns to 1980s levels by 2048 in our model, warming the lower stratosphere and strengthening the stratospheric westerly winds. We perform a spatial analysis and show for the first time that the austral spring stratospheric response to GHGs exhibits a marked planetary wavenumber 1 (PW1) pattern, which reinforces the response to ozone recovery over the Western Hemisphere and weakens it over the Eastern Hemisphere. These changes, which imply an eastward phase shift in the PW1, largely cancel out in the zonal mean. The Southern Hemisphere residual circulation strengthens during most of the year due to the increase in GHGs and weakens in spring due to ozone recovery. However, we find that in November the GHGs also drive a weakening of the residual circulation, reinforcing the effect of ozone recovery, which represents another novel result. At the surface, the westerly winds weaken and shift equatorward due to ozone recovery, driving a weak decrease in the transport of the Antarctic Circumpolar Current and in the Agulhas leakage and a cooling of the upper ocean, which is most pronounced in the latitudinal band 35–45∘ S. The increasing GHGs drive changes in the opposite direction that overwhelm the ozone effect. The total changes at the surface and in the oceanic circulation are nevertheless weaker in the presence of ozone recovery than those induced by GHGs alone, highlighting the importance of the ... Article in Journal/Newspaper Antarc* Antarctic Niedersächsisches Online-Archiv NOA Weather and Climate Dynamics 3 1 139 171 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Ivanciu, Ioana Matthes, Katja Biastoch, Arne Wahl, Sebastian Harlaß, Jan Twenty-first-century Southern Hemisphere impacts of ozone recovery and climate change from the stratosphere to the ocean |
topic_facet |
article Verlagsveröffentlichung |
description |
Changes in stratospheric ozone concentrations and increasing concentrations of greenhouse gases (GHGs) alter the temperature structure of the atmosphere and drive changes in the atmospheric and oceanic circulation. We systematically investigate the impacts of ozone recovery and increasing GHGs on the atmospheric and oceanic circulation in the Southern Hemisphere during the twenty-first century using a unique coupled ocean–atmosphere climate model with interactive ozone chemistry and enhanced oceanic resolution. We use the high-emission scenario SSP5-8.5 for GHGs under which the springtime Antarctic total column ozone returns to 1980s levels by 2048 in our model, warming the lower stratosphere and strengthening the stratospheric westerly winds. We perform a spatial analysis and show for the first time that the austral spring stratospheric response to GHGs exhibits a marked planetary wavenumber 1 (PW1) pattern, which reinforces the response to ozone recovery over the Western Hemisphere and weakens it over the Eastern Hemisphere. These changes, which imply an eastward phase shift in the PW1, largely cancel out in the zonal mean. The Southern Hemisphere residual circulation strengthens during most of the year due to the increase in GHGs and weakens in spring due to ozone recovery. However, we find that in November the GHGs also drive a weakening of the residual circulation, reinforcing the effect of ozone recovery, which represents another novel result. At the surface, the westerly winds weaken and shift equatorward due to ozone recovery, driving a weak decrease in the transport of the Antarctic Circumpolar Current and in the Agulhas leakage and a cooling of the upper ocean, which is most pronounced in the latitudinal band 35–45∘ S. The increasing GHGs drive changes in the opposite direction that overwhelm the ozone effect. The total changes at the surface and in the oceanic circulation are nevertheless weaker in the presence of ozone recovery than those induced by GHGs alone, highlighting the importance of the ... |
format |
Article in Journal/Newspaper |
author |
Ivanciu, Ioana Matthes, Katja Biastoch, Arne Wahl, Sebastian Harlaß, Jan |
author_facet |
Ivanciu, Ioana Matthes, Katja Biastoch, Arne Wahl, Sebastian Harlaß, Jan |
author_sort |
Ivanciu, Ioana |
title |
Twenty-first-century Southern Hemisphere impacts of ozone recovery and climate change from the stratosphere to the ocean |
title_short |
Twenty-first-century Southern Hemisphere impacts of ozone recovery and climate change from the stratosphere to the ocean |
title_full |
Twenty-first-century Southern Hemisphere impacts of ozone recovery and climate change from the stratosphere to the ocean |
title_fullStr |
Twenty-first-century Southern Hemisphere impacts of ozone recovery and climate change from the stratosphere to the ocean |
title_full_unstemmed |
Twenty-first-century Southern Hemisphere impacts of ozone recovery and climate change from the stratosphere to the ocean |
title_sort |
twenty-first-century southern hemisphere impacts of ozone recovery and climate change from the stratosphere to the ocean |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/wcd-3-139-2022 https://noa.gwlb.de/receive/cop_mods_00060078 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00059727/wcd-3-139-2022.pdf https://wcd.copernicus.org/articles/3/139/2022/wcd-3-139-2022.pdf |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Weather and Climate Dynamics -- https://www.weather-climate-dynamics.net/ -- 2698-4016 https://doi.org/10.5194/wcd-3-139-2022 https://noa.gwlb.de/receive/cop_mods_00060078 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00059727/wcd-3-139-2022.pdf https://wcd.copernicus.org/articles/3/139/2022/wcd-3-139-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/wcd-3-139-2022 |
container_title |
Weather and Climate Dynamics |
container_volume |
3 |
container_issue |
1 |
container_start_page |
139 |
op_container_end_page |
171 |
_version_ |
1810489921525252096 |