Impacts of Interactive Stratospheric Chemistry on Antarctic and Southern Ocean Climate Change in the Goddard Earth Observing System Version 5 (GEOS-5)
Stratospheric ozone depletion plays a major role in driving climate change in the Southern Hemisphere. To date, many climate models prescribe the stratospheric ozone layer's evolution using monthly and zonally averaged ozone fields. However, the prescribed ozone underestimates Antarctic ozone d...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20170002562 2023-05-15T13:35:23+02:00 Impacts of Interactive Stratospheric Chemistry on Antarctic and Southern Ocean Climate Change in the Goddard Earth Observing System Version 5 (GEOS-5) Waugh, Darryn W. Douglass, Anne R. Vikhliaev, Yury V. Pawson, Steven Li, Feng Newman, Paul A. Perlwitz, Judith Unclassified, Unlimited, Publicly available April 19, 2016 application/pdf http://hdl.handle.net/2060/20170002562 unknown Document ID: 20170002562 http://hdl.handle.net/2060/20170002562 Copyright, Distribution as joint owner in the copyright CASI Oceanography Geophysics GSFC-E-DAA-TN40649 Journal of Climate (ISSN 0894-8755) (e-ISSN 1520-0442); 29; 9; 3199-3218 2016 ftnasantrs 2019-07-20T23:37:39Z Stratospheric ozone depletion plays a major role in driving climate change in the Southern Hemisphere. To date, many climate models prescribe the stratospheric ozone layer's evolution using monthly and zonally averaged ozone fields. However, the prescribed ozone underestimates Antarctic ozone depletion and lacks zonal asymmetries. In this study we investigate the impact of using interactive stratospheric chemistry instead of prescribed ozone on climate change simulations of the Antarctic and Southern Ocean. Two sets of 1960-2010 ensemble transient simulations are conducted with the coupled ocean version of the Goddard Earth Observing System Model, version 5: one with interactive stratospheric chemistry and the other with prescribed ozone derived from the same interactive simulations. The model's climatology is evaluated using observations and reanalysis. Comparison of the 1979-2010 climate trends between these two simulations reveals that interactive chemistry has important effects on climate change not only in the Antarctic stratosphere, troposphere, and surface, but also in the Southern Ocean and Antarctic sea ice. Interactive chemistry causes stronger Antarctic lower stratosphere cooling and circumpolar westerly acceleration during November-December-January. It enhances stratosphere-troposphere coupling and leads to significantly larger tropospheric and surface westerly changes. The significantly stronger surface wind stress trends cause larger increases of the Southern Ocean Meridional Overturning Circulation, leading to year-round stronger ocean warming near the surface and enhanced Antarctic sea ice decrease. Other/Unknown Material Antarc* Antarctic Sea ice Southern Ocean NASA Technical Reports Server (NTRS) Antarctic Southern Ocean The Antarctic |
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NASA Technical Reports Server (NTRS) |
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Oceanography Geophysics |
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Oceanography Geophysics Waugh, Darryn W. Douglass, Anne R. Vikhliaev, Yury V. Pawson, Steven Li, Feng Newman, Paul A. Perlwitz, Judith Impacts of Interactive Stratospheric Chemistry on Antarctic and Southern Ocean Climate Change in the Goddard Earth Observing System Version 5 (GEOS-5) |
topic_facet |
Oceanography Geophysics |
description |
Stratospheric ozone depletion plays a major role in driving climate change in the Southern Hemisphere. To date, many climate models prescribe the stratospheric ozone layer's evolution using monthly and zonally averaged ozone fields. However, the prescribed ozone underestimates Antarctic ozone depletion and lacks zonal asymmetries. In this study we investigate the impact of using interactive stratospheric chemistry instead of prescribed ozone on climate change simulations of the Antarctic and Southern Ocean. Two sets of 1960-2010 ensemble transient simulations are conducted with the coupled ocean version of the Goddard Earth Observing System Model, version 5: one with interactive stratospheric chemistry and the other with prescribed ozone derived from the same interactive simulations. The model's climatology is evaluated using observations and reanalysis. Comparison of the 1979-2010 climate trends between these two simulations reveals that interactive chemistry has important effects on climate change not only in the Antarctic stratosphere, troposphere, and surface, but also in the Southern Ocean and Antarctic sea ice. Interactive chemistry causes stronger Antarctic lower stratosphere cooling and circumpolar westerly acceleration during November-December-January. It enhances stratosphere-troposphere coupling and leads to significantly larger tropospheric and surface westerly changes. The significantly stronger surface wind stress trends cause larger increases of the Southern Ocean Meridional Overturning Circulation, leading to year-round stronger ocean warming near the surface and enhanced Antarctic sea ice decrease. |
format |
Other/Unknown Material |
author |
Waugh, Darryn W. Douglass, Anne R. Vikhliaev, Yury V. Pawson, Steven Li, Feng Newman, Paul A. Perlwitz, Judith |
author_facet |
Waugh, Darryn W. Douglass, Anne R. Vikhliaev, Yury V. Pawson, Steven Li, Feng Newman, Paul A. Perlwitz, Judith |
author_sort |
Waugh, Darryn W. |
title |
Impacts of Interactive Stratospheric Chemistry on Antarctic and Southern Ocean Climate Change in the Goddard Earth Observing System Version 5 (GEOS-5) |
title_short |
Impacts of Interactive Stratospheric Chemistry on Antarctic and Southern Ocean Climate Change in the Goddard Earth Observing System Version 5 (GEOS-5) |
title_full |
Impacts of Interactive Stratospheric Chemistry on Antarctic and Southern Ocean Climate Change in the Goddard Earth Observing System Version 5 (GEOS-5) |
title_fullStr |
Impacts of Interactive Stratospheric Chemistry on Antarctic and Southern Ocean Climate Change in the Goddard Earth Observing System Version 5 (GEOS-5) |
title_full_unstemmed |
Impacts of Interactive Stratospheric Chemistry on Antarctic and Southern Ocean Climate Change in the Goddard Earth Observing System Version 5 (GEOS-5) |
title_sort |
impacts of interactive stratospheric chemistry on antarctic and southern ocean climate change in the goddard earth observing system version 5 (geos-5) |
publishDate |
2016 |
url |
http://hdl.handle.net/2060/20170002562 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_source |
CASI |
op_relation |
Document ID: 20170002562 http://hdl.handle.net/2060/20170002562 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766065015755898880 |