Assessment of the structure and variability of weddell sea water masses in distinct ocean reanalysis products
We assessed and evaluated the performance of five ocean reanalysis products in reproducing essential hydrographic properties and their associated temporal variability for the Weddell Sea, Antarctica. The products used in this assessment were ECMWF ORAS4 (European Centre for Medium-Range Weather Fore...
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ftunivfurg:oai:repositorio.furg.br:1/5881 2023-11-12T04:01:56+01:00 Assessment of the structure and variability of weddell sea water masses in distinct ocean reanalysis products Dotto, Tiago Segabinazzi Pereira, Rodrigo Kerr Duarte Mata, Mauricio Magalhães Azeneu, Marina do Valle Chagas Wainer, Ilana Elazari Klein Coaracy Fahrbach, Eberhard Rohardt, Gerd 2014 application/pdf http://repositorio.furg.br/handle/1/5881 https://doi.org/10.5194/os-10-523-2014 eng eng DOTTO, Tiago Segabinazzi et al. Assessment of the structure and variability of Weddell Sea water masses in distinct ocean reanalysis products. Ocean Science, v.10, n.3, p.523-546, 2014 Disponível em: <http://www.ocean-sci.net/10/523/2014/os-10-523-2014.html>. Acesso em 22 Jan 2016. 2005-7172 http://repositorio.furg.br/handle/1/5881 doi:10.5194/os-10-523-2014 open access article 2014 ftunivfurg https://doi.org/10.5194/os-10-523-2014 2023-10-24T21:00:49Z We assessed and evaluated the performance of five ocean reanalysis products in reproducing essential hydrographic properties and their associated temporal variability for the Weddell Sea, Antarctica. The products used in this assessment were ECMWF ORAS4 (European Centre for Medium-Range Weather Forecasts Ocean Reanalysis System 4), CFSR (Climate Forecast System Reanalysis), MyOcean UR025.4 (University of Reading), ECCO2 (Estimating the Circulation and Climate of the Ocean, Phase II) and SODA (Simple Ocean Data Assimilation). The present study focuses on the Weddell Sea deep layer, which is composed of the following three main water masses: Warm Deep Water (WDW), Weddell Sea Deep Water (WSDW) and Weddell Sea Bottom Water (WSBW). The MyOcean UR025.4 product provided the most accurate representation of the structure and thermohaline properties of the Weddell Sea water masses when compared with observations. All the ocean reanalysis products analyzed exhibited limited capabilities in representing the surface water masses in the Weddell Sea. The CFSR and ECCO2 products were not able to represent deep water masses with a neutral density ≥ 28.40 kg m−3 , which was considered the WSBW’s upper limit throughout the simulation period. The expected WDW warming was only reproduced by the SODA product, whereas the ECCO2 product was able to represent the trends in the WSDW’s hydrographic properties. All the assessed ocean reanalyses were able to represent the decrease in the WSBW’s density, except the SODA product in the inner Weddell Sea. Improvements in parameterization may have as much impact on the reanalyses assessed as improvements in horizontal resolution primarily because the Southern Ocean lacks in situ data, and the data that are currently available are summer-biased. The choice of the reanalysis product should be made carefully, taking into account the performance, the parameters of interest, and the type of physical processes to be evaluated. Article in Journal/Newspaper Antarc* Antarctica Southern Ocean Weddell Sea RI FURG (Repositório da Universidade Federal do Rio Grande) Southern Ocean Weddell Weddell Sea Ocean Science 10 3 523 546 |
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Open Polar |
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RI FURG (Repositório da Universidade Federal do Rio Grande) |
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ftunivfurg |
language |
English |
description |
We assessed and evaluated the performance of five ocean reanalysis products in reproducing essential hydrographic properties and their associated temporal variability for the Weddell Sea, Antarctica. The products used in this assessment were ECMWF ORAS4 (European Centre for Medium-Range Weather Forecasts Ocean Reanalysis System 4), CFSR (Climate Forecast System Reanalysis), MyOcean UR025.4 (University of Reading), ECCO2 (Estimating the Circulation and Climate of the Ocean, Phase II) and SODA (Simple Ocean Data Assimilation). The present study focuses on the Weddell Sea deep layer, which is composed of the following three main water masses: Warm Deep Water (WDW), Weddell Sea Deep Water (WSDW) and Weddell Sea Bottom Water (WSBW). The MyOcean UR025.4 product provided the most accurate representation of the structure and thermohaline properties of the Weddell Sea water masses when compared with observations. All the ocean reanalysis products analyzed exhibited limited capabilities in representing the surface water masses in the Weddell Sea. The CFSR and ECCO2 products were not able to represent deep water masses with a neutral density ≥ 28.40 kg m−3 , which was considered the WSBW’s upper limit throughout the simulation period. The expected WDW warming was only reproduced by the SODA product, whereas the ECCO2 product was able to represent the trends in the WSDW’s hydrographic properties. All the assessed ocean reanalyses were able to represent the decrease in the WSBW’s density, except the SODA product in the inner Weddell Sea. Improvements in parameterization may have as much impact on the reanalyses assessed as improvements in horizontal resolution primarily because the Southern Ocean lacks in situ data, and the data that are currently available are summer-biased. The choice of the reanalysis product should be made carefully, taking into account the performance, the parameters of interest, and the type of physical processes to be evaluated. |
format |
Article in Journal/Newspaper |
author |
Dotto, Tiago Segabinazzi Pereira, Rodrigo Kerr Duarte Mata, Mauricio Magalhães Azeneu, Marina do Valle Chagas Wainer, Ilana Elazari Klein Coaracy Fahrbach, Eberhard Rohardt, Gerd |
spellingShingle |
Dotto, Tiago Segabinazzi Pereira, Rodrigo Kerr Duarte Mata, Mauricio Magalhães Azeneu, Marina do Valle Chagas Wainer, Ilana Elazari Klein Coaracy Fahrbach, Eberhard Rohardt, Gerd Assessment of the structure and variability of weddell sea water masses in distinct ocean reanalysis products |
author_facet |
Dotto, Tiago Segabinazzi Pereira, Rodrigo Kerr Duarte Mata, Mauricio Magalhães Azeneu, Marina do Valle Chagas Wainer, Ilana Elazari Klein Coaracy Fahrbach, Eberhard Rohardt, Gerd |
author_sort |
Dotto, Tiago Segabinazzi |
title |
Assessment of the structure and variability of weddell sea water masses in distinct ocean reanalysis products |
title_short |
Assessment of the structure and variability of weddell sea water masses in distinct ocean reanalysis products |
title_full |
Assessment of the structure and variability of weddell sea water masses in distinct ocean reanalysis products |
title_fullStr |
Assessment of the structure and variability of weddell sea water masses in distinct ocean reanalysis products |
title_full_unstemmed |
Assessment of the structure and variability of weddell sea water masses in distinct ocean reanalysis products |
title_sort |
assessment of the structure and variability of weddell sea water masses in distinct ocean reanalysis products |
publishDate |
2014 |
url |
http://repositorio.furg.br/handle/1/5881 https://doi.org/10.5194/os-10-523-2014 |
geographic |
Southern Ocean Weddell Weddell Sea |
geographic_facet |
Southern Ocean Weddell Weddell Sea |
genre |
Antarc* Antarctica Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctica Southern Ocean Weddell Sea |
op_relation |
DOTTO, Tiago Segabinazzi et al. Assessment of the structure and variability of Weddell Sea water masses in distinct ocean reanalysis products. Ocean Science, v.10, n.3, p.523-546, 2014 Disponível em: <http://www.ocean-sci.net/10/523/2014/os-10-523-2014.html>. Acesso em 22 Jan 2016. 2005-7172 http://repositorio.furg.br/handle/1/5881 doi:10.5194/os-10-523-2014 |
op_rights |
open access |
op_doi |
https://doi.org/10.5194/os-10-523-2014 |
container_title |
Ocean Science |
container_volume |
10 |
container_issue |
3 |
container_start_page |
523 |
op_container_end_page |
546 |
_version_ |
1782333431907090432 |