Langmuir mixing effects on global climate: WAVEWATCH III in CESM
Large-Eddy Simulations (LES) have shown the effects of ocean surface gravity waves in enhancing the ocean boundary layer mixing through Langmuir turbulence. Neglecting this Langmuir mixing process may contribute to the common shallow bias in mixed layer depth in regions of the Southern Ocean and the...
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Language: | English |
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2016
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ftncar:oai:drupal-site.org:articles_18514 2023-09-05T13:23:28+02:00 Langmuir mixing effects on global climate: WAVEWATCH III in CESM Li, Qing (author) Webb, Adrean (author) Fox-Kemper, Baylor (author) Craig, Anthony (author) Danabasoglu, Gokhan (author) Large, William (author) Vertenstein, Mariana (author) 2016-07-01 http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-022-977 https://doi.org/10.1016/j.ocemod.2015.07.020 en eng Elsevier Ltd. Ocean Modelling articles:18514 ark:/85065/d7q81fp4 http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-022-977 doi:10.1016/j.ocemod.2015.07.020 Copyright 2016 Elsevier. Text article 2016 ftncar https://doi.org/10.1016/j.ocemod.2015.07.020 2023-08-14T18:43:34Z Large-Eddy Simulations (LES) have shown the effects of ocean surface gravity waves in enhancing the ocean boundary layer mixing through Langmuir turbulence. Neglecting this Langmuir mixing process may contribute to the common shallow bias in mixed layer depth in regions of the Southern Ocean and the Northern Atlantic in most state-of-the-art climate models. In this study, a third generation wave model, WAVEWATCH III, has been incorporated as a component of the Community Earth System Model, version 1.2 (CESM1.2). In particular, the wave model is now coupled with the ocean model through a modified version of the K-Profile Parameterization (KPP) to approximate the influence of Langmuir mixing. Unlike past studies, the wind-wave misalignment and the effects of Stokes drift penetration depth are considered through empirical scalings based on the rate of mixing in LES. Wave-Ocean only experiments show substantial improvements in the shallow biases of mixed layer depth in the Southern Ocean. Ventilation is enhanced and low concentration biases of pCFC-11 are reduced in the Southern Hemisphere. A majority of the improvements persist in the presence of other climate feedbacks in the fully coupled experiments. In addition, warming of the subsurface water over the majority of global ocean is observed in the fully coupled experiments with waves, and the cold subsurface ocean temperature biases are reduced. Article in Journal/Newspaper Southern Ocean OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Langmuir ENVELOPE(-67.150,-67.150,-66.967,-66.967) Southern Ocean Ocean Modelling 103 145 160 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
Large-Eddy Simulations (LES) have shown the effects of ocean surface gravity waves in enhancing the ocean boundary layer mixing through Langmuir turbulence. Neglecting this Langmuir mixing process may contribute to the common shallow bias in mixed layer depth in regions of the Southern Ocean and the Northern Atlantic in most state-of-the-art climate models. In this study, a third generation wave model, WAVEWATCH III, has been incorporated as a component of the Community Earth System Model, version 1.2 (CESM1.2). In particular, the wave model is now coupled with the ocean model through a modified version of the K-Profile Parameterization (KPP) to approximate the influence of Langmuir mixing. Unlike past studies, the wind-wave misalignment and the effects of Stokes drift penetration depth are considered through empirical scalings based on the rate of mixing in LES. Wave-Ocean only experiments show substantial improvements in the shallow biases of mixed layer depth in the Southern Ocean. Ventilation is enhanced and low concentration biases of pCFC-11 are reduced in the Southern Hemisphere. A majority of the improvements persist in the presence of other climate feedbacks in the fully coupled experiments. In addition, warming of the subsurface water over the majority of global ocean is observed in the fully coupled experiments with waves, and the cold subsurface ocean temperature biases are reduced. |
author2 |
Li, Qing (author) Webb, Adrean (author) Fox-Kemper, Baylor (author) Craig, Anthony (author) Danabasoglu, Gokhan (author) Large, William (author) Vertenstein, Mariana (author) |
format |
Article in Journal/Newspaper |
title |
Langmuir mixing effects on global climate: WAVEWATCH III in CESM |
spellingShingle |
Langmuir mixing effects on global climate: WAVEWATCH III in CESM |
title_short |
Langmuir mixing effects on global climate: WAVEWATCH III in CESM |
title_full |
Langmuir mixing effects on global climate: WAVEWATCH III in CESM |
title_fullStr |
Langmuir mixing effects on global climate: WAVEWATCH III in CESM |
title_full_unstemmed |
Langmuir mixing effects on global climate: WAVEWATCH III in CESM |
title_sort |
langmuir mixing effects on global climate: wavewatch iii in cesm |
publisher |
Elsevier Ltd. |
publishDate |
2016 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-022-977 https://doi.org/10.1016/j.ocemod.2015.07.020 |
long_lat |
ENVELOPE(-67.150,-67.150,-66.967,-66.967) |
geographic |
Langmuir Southern Ocean |
geographic_facet |
Langmuir Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
Ocean Modelling articles:18514 ark:/85065/d7q81fp4 http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-022-977 doi:10.1016/j.ocemod.2015.07.020 |
op_rights |
Copyright 2016 Elsevier. |
op_doi |
https://doi.org/10.1016/j.ocemod.2015.07.020 |
container_title |
Ocean Modelling |
container_volume |
103 |
container_start_page |
145 |
op_container_end_page |
160 |
_version_ |
1776204054608740352 |