Mean and variability of the Tropical Atlantic Ocean in the CCSM4
This study analyzes important aspects of the tropical Atlantic Ocean from simulations of the fourth version of the Community Climate System Model (CCSM4): the mean sea surface temperature (SST) and wind stress, the Atlantic warm pools, the principal modes of SST variability, and the heat budget in t...
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American Meteorological Society
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ftncar:oai:drupal-site.org:articles_12180 2023-09-05T13:21:33+02:00 Mean and variability of the Tropical Atlantic Ocean in the CCSM4 Munoz, Ernesto (author) Weijer, Wilbert (author) Grodsky, Semyon (author) Bates, Susan (author) Wainer, Ilana (author) 2012-07 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-011-040 https://doi.org/10.1175/JCLI-D-11-00294.1 en eng American Meteorological Society Journal of Climate http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-011-040 doi:10.1175/JCLI-D-11-00294.1 ark:/85065/d79p32cq Copyright 2012 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Law (17 USC, as revised by P.L. 94-553) does not require the Society's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statements, requires written permission or license from the AMS. Additional details are provided in the AMS Copyright Policies, available from the AMS at 617-227-2425 or amspubs@ametsoc.org. Permission to place a copy of this work on this server has been provided by the AMS. The AMS does not guarantee that the copy provided here is an accurate copy of the published work. Text article 2012 ftncar https://doi.org/10.1175/JCLI-D-11-00294.1 2023-08-14T18:39:15Z This study analyzes important aspects of the tropical Atlantic Ocean from simulations of the fourth version of the Community Climate System Model (CCSM4): the mean sea surface temperature (SST) and wind stress, the Atlantic warm pools, the principal modes of SST variability, and the heat budget in the Benguela region. The main goal was to assess the similarities and differences between the CCSM4 simulations and observations. The results indicate that the tropical Atlantic overall is realistic in CCSM4. However, there are still significant biases in the CCSM4 Atlantic SSTs, with a colder tropical North Atlantic and a hotter tropical South Atlantic, that are related to biases in the wind stress. These are also reflected in the Atlantic warm pools in April and September, with its volume greater than in observations in April and smaller than in observations in September. The variability of SSTs in the tropical Atlantic is well represented in CCSM4. However, in the equatorial and tropical South Atlantic regions, CCSM4 has two distinct modes of variability, in contrast to observed behavior. A model heat budget analysis of the Benguela region indicates that the variability of the upper-ocean temperature is dominated by vertical advection, followed by meridional advection. Article in Journal/Newspaper North Atlantic OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Journal of Climate 25 14 4860 4882 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
This study analyzes important aspects of the tropical Atlantic Ocean from simulations of the fourth version of the Community Climate System Model (CCSM4): the mean sea surface temperature (SST) and wind stress, the Atlantic warm pools, the principal modes of SST variability, and the heat budget in the Benguela region. The main goal was to assess the similarities and differences between the CCSM4 simulations and observations. The results indicate that the tropical Atlantic overall is realistic in CCSM4. However, there are still significant biases in the CCSM4 Atlantic SSTs, with a colder tropical North Atlantic and a hotter tropical South Atlantic, that are related to biases in the wind stress. These are also reflected in the Atlantic warm pools in April and September, with its volume greater than in observations in April and smaller than in observations in September. The variability of SSTs in the tropical Atlantic is well represented in CCSM4. However, in the equatorial and tropical South Atlantic regions, CCSM4 has two distinct modes of variability, in contrast to observed behavior. A model heat budget analysis of the Benguela region indicates that the variability of the upper-ocean temperature is dominated by vertical advection, followed by meridional advection. |
author2 |
Munoz, Ernesto (author) Weijer, Wilbert (author) Grodsky, Semyon (author) Bates, Susan (author) Wainer, Ilana (author) |
format |
Article in Journal/Newspaper |
title |
Mean and variability of the Tropical Atlantic Ocean in the CCSM4 |
spellingShingle |
Mean and variability of the Tropical Atlantic Ocean in the CCSM4 |
title_short |
Mean and variability of the Tropical Atlantic Ocean in the CCSM4 |
title_full |
Mean and variability of the Tropical Atlantic Ocean in the CCSM4 |
title_fullStr |
Mean and variability of the Tropical Atlantic Ocean in the CCSM4 |
title_full_unstemmed |
Mean and variability of the Tropical Atlantic Ocean in the CCSM4 |
title_sort |
mean and variability of the tropical atlantic ocean in the ccsm4 |
publisher |
American Meteorological Society |
publishDate |
2012 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-011-040 https://doi.org/10.1175/JCLI-D-11-00294.1 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Journal of Climate http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-011-040 doi:10.1175/JCLI-D-11-00294.1 ark:/85065/d79p32cq |
op_rights |
Copyright 2012 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Law (17 USC, as revised by P.L. 94-553) does not require the Society's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statements, requires written permission or license from the AMS. Additional details are provided in the AMS Copyright Policies, available from the AMS at 617-227-2425 or amspubs@ametsoc.org. Permission to place a copy of this work on this server has been provided by the AMS. The AMS does not guarantee that the copy provided here is an accurate copy of the published work. |
op_doi |
https://doi.org/10.1175/JCLI-D-11-00294.1 |
container_title |
Journal of Climate |
container_volume |
25 |
container_issue |
14 |
container_start_page |
4860 |
op_container_end_page |
4882 |
_version_ |
1776202152157380608 |