Chemistry-climate model simulations of spring Antarctic ozone
Coupled chemistry-climate model simulations covering the recent past and continuing throughout the 21st century have been completed with a range of different models. Common forcings are used for the halogen amounts and greenhouse gas concentrations, as expected under the Montreal Protocol (with amen...
Published in: | Journal of Geophysical Research |
---|---|
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union
2010
|
Subjects: | |
Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-102 https://doi.org/10.1029/2009JD013577 |
id |
ftncar:oai:drupal-site.org:articles_10556 |
---|---|
record_format |
openpolar |
spelling |
ftncar:oai:drupal-site.org:articles_10556 2023-09-05T13:12:51+02:00 Chemistry-climate model simulations of spring Antarctic ozone Austin, John (author) Struthers, H. (author) Scinocca, J. (author) Plummer, D. (author) Akiyoshi, H. (author) Baumgaertner, A. (author) Bekki, S. (author) Bodeker, G. (author) Braesicke, P. (author) Brühl, C. (author) Butchart, N. (author) Chipperfield, M. (author) Cugnet, D. (author) Dameris, M. (author) Dhomse, S. (author) Frith, S. (author) Garny, H. (author) Gettelman, Andrew (author) Hardiman, S. (author) Jöckel, P. (author) Kinnison, Douglas (author) Kubin, A. (author) Langematz, U. (author) Mancini, E. (author) Marchand, M. (author) Michou, M. (author) Morgenstern, O. (author) Nakamura, T. (author) Nielsen, J. (author) Pitari, G. (author) Pyle, J. (author) Rozanov, E. (author) Shepherd, T. (author) Shibata, K. (author) Smale, D. (author) Teyssèdre, H. (author) Yamashita, Y. (author) Lamarque, Jean (author) 2010-11-05 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-102 https://doi.org/10.1029/2009JD013577 en eng American Geophysical Union Journal of Geophysical Research-Atmospheres http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-102 doi:10.1029/2009JD013577 ark:/85065/d7jd4x9z An edited version of this paper was published by AGU. Copyright 2010 American Geophysical Union. Text article 2010 ftncar https://doi.org/10.1029/2009JD013577 2023-08-14T18:38:58Z Coupled chemistry-climate model simulations covering the recent past and continuing throughout the 21st century have been completed with a range of different models. Common forcings are used for the halogen amounts and greenhouse gas concentrations, as expected under the Montreal Protocol (with amendments) and Intergovernmental Panel on Climate Change A1b Scenario. The simulations of the Antarctic ozone hole are compared using commonly used diagnostics: the minimum ozone, the maximum area of ozone below 220 DU, and the ozone mass deficit below 220 DU. Despite the fact that the processes responsible for ozone depletion are reasonably well understood, a wide range of results is obtained. Comparisons with observations indicate that one of the reasons for the model underprediction in ozone hole area is the tendency for models to underpredict, by up to 35%, the area of low temperatures responsible for polar stratospheric cloud formation. Models also typically have species gradients that are too weak at the edge of the polar vortex, suggesting that there is too much mixing of air across the vortex edge. Other models show a high bias in total column ozone which restricts the size of the ozone hole (defined by a 220 DU threshold). The results of those models which agree best with observations are examined in more detail. For several models the ozone hole does not disappear this century but a small ozone hole of up to three million square kilometers continues to occur in most springs even after 2070. Article in Journal/Newspaper Antarc* Antarctic OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Antarctic The Antarctic Journal of Geophysical Research 115 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
Coupled chemistry-climate model simulations covering the recent past and continuing throughout the 21st century have been completed with a range of different models. Common forcings are used for the halogen amounts and greenhouse gas concentrations, as expected under the Montreal Protocol (with amendments) and Intergovernmental Panel on Climate Change A1b Scenario. The simulations of the Antarctic ozone hole are compared using commonly used diagnostics: the minimum ozone, the maximum area of ozone below 220 DU, and the ozone mass deficit below 220 DU. Despite the fact that the processes responsible for ozone depletion are reasonably well understood, a wide range of results is obtained. Comparisons with observations indicate that one of the reasons for the model underprediction in ozone hole area is the tendency for models to underpredict, by up to 35%, the area of low temperatures responsible for polar stratospheric cloud formation. Models also typically have species gradients that are too weak at the edge of the polar vortex, suggesting that there is too much mixing of air across the vortex edge. Other models show a high bias in total column ozone which restricts the size of the ozone hole (defined by a 220 DU threshold). The results of those models which agree best with observations are examined in more detail. For several models the ozone hole does not disappear this century but a small ozone hole of up to three million square kilometers continues to occur in most springs even after 2070. |
author2 |
Austin, John (author) Struthers, H. (author) Scinocca, J. (author) Plummer, D. (author) Akiyoshi, H. (author) Baumgaertner, A. (author) Bekki, S. (author) Bodeker, G. (author) Braesicke, P. (author) Brühl, C. (author) Butchart, N. (author) Chipperfield, M. (author) Cugnet, D. (author) Dameris, M. (author) Dhomse, S. (author) Frith, S. (author) Garny, H. (author) Gettelman, Andrew (author) Hardiman, S. (author) Jöckel, P. (author) Kinnison, Douglas (author) Kubin, A. (author) Langematz, U. (author) Mancini, E. (author) Marchand, M. (author) Michou, M. (author) Morgenstern, O. (author) Nakamura, T. (author) Nielsen, J. (author) Pitari, G. (author) Pyle, J. (author) Rozanov, E. (author) Shepherd, T. (author) Shibata, K. (author) Smale, D. (author) Teyssèdre, H. (author) Yamashita, Y. (author) Lamarque, Jean (author) |
format |
Article in Journal/Newspaper |
title |
Chemistry-climate model simulations of spring Antarctic ozone |
spellingShingle |
Chemistry-climate model simulations of spring Antarctic ozone |
title_short |
Chemistry-climate model simulations of spring Antarctic ozone |
title_full |
Chemistry-climate model simulations of spring Antarctic ozone |
title_fullStr |
Chemistry-climate model simulations of spring Antarctic ozone |
title_full_unstemmed |
Chemistry-climate model simulations of spring Antarctic ozone |
title_sort |
chemistry-climate model simulations of spring antarctic ozone |
publisher |
American Geophysical Union |
publishDate |
2010 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-102 https://doi.org/10.1029/2009JD013577 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Journal of Geophysical Research-Atmospheres http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-102 doi:10.1029/2009JD013577 ark:/85065/d7jd4x9z |
op_rights |
An edited version of this paper was published by AGU. Copyright 2010 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2009JD013577 |
container_title |
Journal of Geophysical Research |
container_volume |
115 |
_version_ |
1776202041323945984 |