Reconciling modeled and observed temperature trends over Antarctica
Over the last three decades, ozone depletion over Antarctica has affected temperature and winds in the lower stratosphere, and even in the troposphere and at the surface. The second Chemistry Climate Model Validation activity (CCMVal2) concluded that chemistry-climate models simulate stratospheric c...
Published in: | Geophysical Research Letters |
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Language: | English |
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American Geophysical Union
2012
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ftncar:oai:drupal-site.org:articles_12414 2023-09-05T13:14:07+02:00 Reconciling modeled and observed temperature trends over Antarctica Calvo Fernandez, Natalia (author) Garcia, Rolando (author) Marsh, Daniel (author) Mills, Mike (author) Kinnison, Douglas (author) Young, Paul (author) 2012-08-28 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-011-752 https://doi.org/10.1029/2012GL052526 en eng American Geophysical Union Geophysical Research Letters http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-011-752 doi:10.1029/2012GL052526 ark:/85065/d7kp82x8 Copyright 2012 American Geophysical Union. Chemistry climate models Stratospheric dynamics Temperature trends Ozone trends Text article 2012 ftncar https://doi.org/10.1029/2012GL052526 2023-08-14T18:39:40Z Over the last three decades, ozone depletion over Antarctica has affected temperature and winds in the lower stratosphere, and even in the troposphere and at the surface. The second Chemistry Climate Model Validation activity (CCMVal2) concluded that chemistry-climate models simulate stratospheric cooling that is too large compared to observations, even though the modeled and observed ozone trends are similar. However, these comparisons were based only on radiosonde data available for 1969–1998. Here, we investigate trends in the Southern Hemisphere polar cap in the latest version of the Community Earth System Model (CESM1) with its high-top atmospheric component, WACCM4, fully coupled to an ocean model. We compare model trends with observations for different periods and with other modeling studies to show much better agreement with more recent data, and conclude that the discrepancy between observed trends and those calculated by high-top models may not be as large as previously reported. Article in Journal/Newspaper Antarc* Antarctica OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Geophysical Research Letters 39 16 n/a n/a |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
topic |
Chemistry climate models Stratospheric dynamics Temperature trends Ozone trends |
spellingShingle |
Chemistry climate models Stratospheric dynamics Temperature trends Ozone trends Reconciling modeled and observed temperature trends over Antarctica |
topic_facet |
Chemistry climate models Stratospheric dynamics Temperature trends Ozone trends |
description |
Over the last three decades, ozone depletion over Antarctica has affected temperature and winds in the lower stratosphere, and even in the troposphere and at the surface. The second Chemistry Climate Model Validation activity (CCMVal2) concluded that chemistry-climate models simulate stratospheric cooling that is too large compared to observations, even though the modeled and observed ozone trends are similar. However, these comparisons were based only on radiosonde data available for 1969–1998. Here, we investigate trends in the Southern Hemisphere polar cap in the latest version of the Community Earth System Model (CESM1) with its high-top atmospheric component, WACCM4, fully coupled to an ocean model. We compare model trends with observations for different periods and with other modeling studies to show much better agreement with more recent data, and conclude that the discrepancy between observed trends and those calculated by high-top models may not be as large as previously reported. |
author2 |
Calvo Fernandez, Natalia (author) Garcia, Rolando (author) Marsh, Daniel (author) Mills, Mike (author) Kinnison, Douglas (author) Young, Paul (author) |
format |
Article in Journal/Newspaper |
title |
Reconciling modeled and observed temperature trends over Antarctica |
title_short |
Reconciling modeled and observed temperature trends over Antarctica |
title_full |
Reconciling modeled and observed temperature trends over Antarctica |
title_fullStr |
Reconciling modeled and observed temperature trends over Antarctica |
title_full_unstemmed |
Reconciling modeled and observed temperature trends over Antarctica |
title_sort |
reconciling modeled and observed temperature trends over antarctica |
publisher |
American Geophysical Union |
publishDate |
2012 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-011-752 https://doi.org/10.1029/2012GL052526 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
Geophysical Research Letters http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-011-752 doi:10.1029/2012GL052526 ark:/85065/d7kp82x8 |
op_rights |
Copyright 2012 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2012GL052526 |
container_title |
Geophysical Research Letters |
container_volume |
39 |
container_issue |
16 |
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n/a |
op_container_end_page |
n/a |
_version_ |
1776205171901071360 |