Comparison of global objective analyzed T-S fields of the upper ocean for 2008-2011
There have been few attempts to quantify errors in various objective analyzed (OA) fields, even though they have potential uncertainties associated with data handling and mapping methods. Here, we compare five different OA fields (EN3, GFDL, IPRC, JAMSTEC, and SIO) for 2008–2011. The variability and...
Published in: | Journal of Marine Systems |
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Language: | English |
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2014
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ftncar:oai:drupal-site.org:articles_14188 2023-09-05T13:14:59+02:00 Comparison of global objective analyzed T-S fields of the upper ocean for 2008-2011 Chang, You-Soon (author) Vecchi, Gabriel (author) Rosati, Anthony (author) Zhang, Shaoqing (author) Yang, Xiaosong (author) 2014-09-01 http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-020-767 https://doi.org/10.1016/j.jmarsys.2014.04.001 en eng Elsevier Ltd. Journal of Marine Systems http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-020-767 doi:10.1016/j.jmarsys.2014.04.001 ark:/85065/d7tm7c2w Copyright 2014 Elsevier. Text article 2014 ftncar https://doi.org/10.1016/j.jmarsys.2014.04.001 2023-08-14T18:45:27Z There have been few attempts to quantify errors in various objective analyzed (OA) fields, even though they have potential uncertainties associated with data handling and mapping methods. Here, we compare five different OA fields (EN3, GFDL, IPRC, JAMSTEC, and SIO) for 2008–2011. The variability and linear trends of the upper ocean temperature are very similar in every ocean basin, but the mean values are different from each other. This discrepancy is evident, especially around the southern ocean (± 0.07 °C in the Antarctic Ocean) where Argo observations are still sparse, which is related to different first-guess climatologies and decorrelation length scales applied to individual OA products. In the subpolar North Atlantic, detailed spatial anomalous patterns are also different. Along the boundary current areas, substantial warming (salting) anomalies with respect to WOA09 climatology are depicted by GFDL, IPRC, and SIO. By comparing with statistical bin-averaged fields and data assimilation products, we confirm that this anomalous pattern is robust, but it could be exaggerated when we calculate the anomalies with WOA09 climatology or other OA fields showing a relatively weak horizontal gradient across the boundary current regions. Article in Journal/Newspaper Antarc* Antarctic Antarctic Ocean North Atlantic Southern Ocean OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Antarctic Antarctic Ocean Southern Ocean The Antarctic Journal of Marine Systems 137 13 20 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
There have been few attempts to quantify errors in various objective analyzed (OA) fields, even though they have potential uncertainties associated with data handling and mapping methods. Here, we compare five different OA fields (EN3, GFDL, IPRC, JAMSTEC, and SIO) for 2008–2011. The variability and linear trends of the upper ocean temperature are very similar in every ocean basin, but the mean values are different from each other. This discrepancy is evident, especially around the southern ocean (± 0.07 °C in the Antarctic Ocean) where Argo observations are still sparse, which is related to different first-guess climatologies and decorrelation length scales applied to individual OA products. In the subpolar North Atlantic, detailed spatial anomalous patterns are also different. Along the boundary current areas, substantial warming (salting) anomalies with respect to WOA09 climatology are depicted by GFDL, IPRC, and SIO. By comparing with statistical bin-averaged fields and data assimilation products, we confirm that this anomalous pattern is robust, but it could be exaggerated when we calculate the anomalies with WOA09 climatology or other OA fields showing a relatively weak horizontal gradient across the boundary current regions. |
author2 |
Chang, You-Soon (author) Vecchi, Gabriel (author) Rosati, Anthony (author) Zhang, Shaoqing (author) Yang, Xiaosong (author) |
format |
Article in Journal/Newspaper |
title |
Comparison of global objective analyzed T-S fields of the upper ocean for 2008-2011 |
spellingShingle |
Comparison of global objective analyzed T-S fields of the upper ocean for 2008-2011 |
title_short |
Comparison of global objective analyzed T-S fields of the upper ocean for 2008-2011 |
title_full |
Comparison of global objective analyzed T-S fields of the upper ocean for 2008-2011 |
title_fullStr |
Comparison of global objective analyzed T-S fields of the upper ocean for 2008-2011 |
title_full_unstemmed |
Comparison of global objective analyzed T-S fields of the upper ocean for 2008-2011 |
title_sort |
comparison of global objective analyzed t-s fields of the upper ocean for 2008-2011 |
publisher |
Elsevier Ltd. |
publishDate |
2014 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-020-767 https://doi.org/10.1016/j.jmarsys.2014.04.001 |
geographic |
Antarctic Antarctic Ocean Southern Ocean The Antarctic |
geographic_facet |
Antarctic Antarctic Ocean Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Ocean North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Ocean North Atlantic Southern Ocean |
op_relation |
Journal of Marine Systems http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-020-767 doi:10.1016/j.jmarsys.2014.04.001 ark:/85065/d7tm7c2w |
op_rights |
Copyright 2014 Elsevier. |
op_doi |
https://doi.org/10.1016/j.jmarsys.2014.04.001 |
container_title |
Journal of Marine Systems |
container_volume |
137 |
container_start_page |
13 |
op_container_end_page |
20 |
_version_ |
1776196839306952704 |