Sensitivity of CFC-11 uptake to physical initial conditions and interannually varying surface forcing in a global ocean model
Sensitivity of the oceanic chlorofluorocarbon CFC-11 uptake to physical initial conditions and surface dynamical forcing (heat and salt fluxes and wind stress) is investigated in a global ocean model used in climate studies. Two different initial conditions are used: a solution following a short int...
Published in: | Ocean Modelling |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier Ltd.
2009
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Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-239 https://doi.org/10.1016/j.ocemod.2009.02.011 |
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ftncar:oai:drupal-site.org:articles_15289 2023-09-05T13:21:39+02:00 Sensitivity of CFC-11 uptake to physical initial conditions and interannually varying surface forcing in a global ocean model Danabasoglu, Gokhan (author) Peacock, Synte (author) Lindsay, Keith (author) Tsumune, Daisuke (author) 2009-03-13 http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-239 https://doi.org/10.1016/j.ocemod.2009.02.011 en eng Elsevier Ltd. Ocean Modelling http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-239 doi:10.1016/j.ocemod.2009.02.011 ark:/85065/d72f7pgf Copyright 2009 Elsevier. Ocean general circulation model Modeled CFC-11 uptake Text article 2009 ftncar https://doi.org/10.1016/j.ocemod.2009.02.011 2023-08-14T18:36:06Z Sensitivity of the oceanic chlorofluorocarbon CFC-11 uptake to physical initial conditions and surface dynamical forcing (heat and salt fluxes and wind stress) is investigated in a global ocean model used in climate studies. Two different initial conditions are used: a solution following a short integration starting with observed temperature and salinity and zero velocities, and the quasi-equilibrium solution of an independent integration. For surface dynamical forcing, recently developed normal-year and interannually varying (1958 - 2000) data sets are used. The model CFC-11 global and basin inventories, particularly in the normal-year forcing case, are below the observed mean estimates, but they remain within the observational error bars. Column inventory spatial distributions indicate nontrivial differences due to both initial condition and forcing changes, particularly in the northern North Atlantic and Southern Ocean. These differences are larger between forcing sensitivity experiments than between the initial condition cases. The comparisons along the A16N and SR3 WOCE sections also show differences between cases. However, comparisons with observations do not clearly favor a particular case, and model - observation differences remain much larger than model - model differences for all simulations. The choice of initial condition does not significantly change the CFC-11 distributions. Both because of locally large differences between normal-year and interannually varying simulations and because the dynamical and CFC-11 forcing calendars are synchronized, we favor using the more realistic interannually varying forcing in future simulations, given the availability of the forcing data sets. Article in Journal/Newspaper North Atlantic Southern Ocean OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Southern Ocean Ocean Modelling 29 1 58 65 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
topic |
Ocean general circulation model Modeled CFC-11 uptake |
spellingShingle |
Ocean general circulation model Modeled CFC-11 uptake Sensitivity of CFC-11 uptake to physical initial conditions and interannually varying surface forcing in a global ocean model |
topic_facet |
Ocean general circulation model Modeled CFC-11 uptake |
description |
Sensitivity of the oceanic chlorofluorocarbon CFC-11 uptake to physical initial conditions and surface dynamical forcing (heat and salt fluxes and wind stress) is investigated in a global ocean model used in climate studies. Two different initial conditions are used: a solution following a short integration starting with observed temperature and salinity and zero velocities, and the quasi-equilibrium solution of an independent integration. For surface dynamical forcing, recently developed normal-year and interannually varying (1958 - 2000) data sets are used. The model CFC-11 global and basin inventories, particularly in the normal-year forcing case, are below the observed mean estimates, but they remain within the observational error bars. Column inventory spatial distributions indicate nontrivial differences due to both initial condition and forcing changes, particularly in the northern North Atlantic and Southern Ocean. These differences are larger between forcing sensitivity experiments than between the initial condition cases. The comparisons along the A16N and SR3 WOCE sections also show differences between cases. However, comparisons with observations do not clearly favor a particular case, and model - observation differences remain much larger than model - model differences for all simulations. The choice of initial condition does not significantly change the CFC-11 distributions. Both because of locally large differences between normal-year and interannually varying simulations and because the dynamical and CFC-11 forcing calendars are synchronized, we favor using the more realistic interannually varying forcing in future simulations, given the availability of the forcing data sets. |
author2 |
Danabasoglu, Gokhan (author) Peacock, Synte (author) Lindsay, Keith (author) Tsumune, Daisuke (author) |
format |
Article in Journal/Newspaper |
title |
Sensitivity of CFC-11 uptake to physical initial conditions and interannually varying surface forcing in a global ocean model |
title_short |
Sensitivity of CFC-11 uptake to physical initial conditions and interannually varying surface forcing in a global ocean model |
title_full |
Sensitivity of CFC-11 uptake to physical initial conditions and interannually varying surface forcing in a global ocean model |
title_fullStr |
Sensitivity of CFC-11 uptake to physical initial conditions and interannually varying surface forcing in a global ocean model |
title_full_unstemmed |
Sensitivity of CFC-11 uptake to physical initial conditions and interannually varying surface forcing in a global ocean model |
title_sort |
sensitivity of cfc-11 uptake to physical initial conditions and interannually varying surface forcing in a global ocean model |
publisher |
Elsevier Ltd. |
publishDate |
2009 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-239 https://doi.org/10.1016/j.ocemod.2009.02.011 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_relation |
Ocean Modelling http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-239 doi:10.1016/j.ocemod.2009.02.011 ark:/85065/d72f7pgf |
op_rights |
Copyright 2009 Elsevier. |
op_doi |
https://doi.org/10.1016/j.ocemod.2009.02.011 |
container_title |
Ocean Modelling |
container_volume |
29 |
container_issue |
1 |
container_start_page |
58 |
op_container_end_page |
65 |
_version_ |
1776202240276561920 |