Secular Trends and Climate Drift in Coupled Ocean-Atmosphere General Circulation Models
Coupled ocean-atmosphere general circulation models (coupled GCMs) with interactive sea ice are the primary tool for investigating possible future global warming and numerous other issues in climate science. A long-standing problem with such models is that when different components of the physical c...
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ftunivnotexas:info:ark/67531/metadc892140 2023-05-15T15:06:07+02:00 Secular Trends and Climate Drift in Coupled Ocean-Atmosphere General Circulation Models Covey, C C Gleckler, P J Phillips, T J Bader, D C United States. Department of Energy. 2004-11-23 PDF-file: 32 pages; size: 1.8 Mbytes Text http://digital.library.unt.edu/ark:/67531/metadc892140/ English eng Lawrence Livermore National Laboratory rep-no: UCRL-JRNL-208282 grantno: W-7405-ENG-48 osti: 883745 http://digital.library.unt.edu/ark:/67531/metadc892140/ ark: ark:/67531/metadc892140 Journal Name: Journal of Geophysical Research; Journal Volume: 111 Salinity Greenhouse Effect Brightness Carbon Dioxide Seas General Circulation Models 58 Geosciences 54 Environmental Sciences Climates Article 2004 ftunivnotexas 2016-12-03T23:12:16Z Coupled ocean-atmosphere general circulation models (coupled GCMs) with interactive sea ice are the primary tool for investigating possible future global warming and numerous other issues in climate science. A long-standing problem with such models is that when different components of the physical climate system are linked together, the simulated climate can drift away from observations unless constrained by ad hoc adjustments to interface fluxes. However, eleven modern coupled GCMs--including three that do not employ flux adjustments--behave much better in this respect than the older generation of models. Surface temperature trends in control run simulations (with external climate forcing such as solar brightness and atmospheric carbon dioxide held constant) are small compared with observed trends, which include 20th century climate change due to both anthropogenic and natural factors. Sea ice changes in the models are dominated by interannual variations. Deep ocean temperature and salinity trends are small enough for model control runs to extend over 1000 simulated years or more, but trends in some regions, most notably the Arctic, are inconsistent among the models and may be problematic. Article in Journal/Newspaper Arctic Climate change Global warming Sea ice University of North Texas: UNT Digital Library Arctic |
institution |
Open Polar |
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University of North Texas: UNT Digital Library |
op_collection_id |
ftunivnotexas |
language |
English |
topic |
Salinity Greenhouse Effect Brightness Carbon Dioxide Seas General Circulation Models 58 Geosciences 54 Environmental Sciences Climates |
spellingShingle |
Salinity Greenhouse Effect Brightness Carbon Dioxide Seas General Circulation Models 58 Geosciences 54 Environmental Sciences Climates Covey, C C Gleckler, P J Phillips, T J Bader, D C Secular Trends and Climate Drift in Coupled Ocean-Atmosphere General Circulation Models |
topic_facet |
Salinity Greenhouse Effect Brightness Carbon Dioxide Seas General Circulation Models 58 Geosciences 54 Environmental Sciences Climates |
description |
Coupled ocean-atmosphere general circulation models (coupled GCMs) with interactive sea ice are the primary tool for investigating possible future global warming and numerous other issues in climate science. A long-standing problem with such models is that when different components of the physical climate system are linked together, the simulated climate can drift away from observations unless constrained by ad hoc adjustments to interface fluxes. However, eleven modern coupled GCMs--including three that do not employ flux adjustments--behave much better in this respect than the older generation of models. Surface temperature trends in control run simulations (with external climate forcing such as solar brightness and atmospheric carbon dioxide held constant) are small compared with observed trends, which include 20th century climate change due to both anthropogenic and natural factors. Sea ice changes in the models are dominated by interannual variations. Deep ocean temperature and salinity trends are small enough for model control runs to extend over 1000 simulated years or more, but trends in some regions, most notably the Arctic, are inconsistent among the models and may be problematic. |
author2 |
United States. Department of Energy. |
format |
Article in Journal/Newspaper |
author |
Covey, C C Gleckler, P J Phillips, T J Bader, D C |
author_facet |
Covey, C C Gleckler, P J Phillips, T J Bader, D C |
author_sort |
Covey, C C |
title |
Secular Trends and Climate Drift in Coupled Ocean-Atmosphere General Circulation Models |
title_short |
Secular Trends and Climate Drift in Coupled Ocean-Atmosphere General Circulation Models |
title_full |
Secular Trends and Climate Drift in Coupled Ocean-Atmosphere General Circulation Models |
title_fullStr |
Secular Trends and Climate Drift in Coupled Ocean-Atmosphere General Circulation Models |
title_full_unstemmed |
Secular Trends and Climate Drift in Coupled Ocean-Atmosphere General Circulation Models |
title_sort |
secular trends and climate drift in coupled ocean-atmosphere general circulation models |
publisher |
Lawrence Livermore National Laboratory |
publishDate |
2004 |
url |
http://digital.library.unt.edu/ark:/67531/metadc892140/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Global warming Sea ice |
genre_facet |
Arctic Climate change Global warming Sea ice |
op_source |
Journal Name: Journal of Geophysical Research; Journal Volume: 111 |
op_relation |
rep-no: UCRL-JRNL-208282 grantno: W-7405-ENG-48 osti: 883745 http://digital.library.unt.edu/ark:/67531/metadc892140/ ark: ark:/67531/metadc892140 |
_version_ |
1766337780123697152 |