Multiparametric analysis and validation in the western Mediterranean of three global OGCM hindcasts
We analyse a hierarchy of three 1/4° global numerical simulations (ORCA-025.G70 (G70), ORCA-025.G85 (G85) and GLORYS1V1 (GLORYS)) by assessing their performance against observational data in the western Mediterranean. When compared with the EN3_v2a temperature and salinity database, the simulations...
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ftdoajarticles:oai:doaj.org/article:bd189a22d11e4c439bab779c3b31d9c8 2023-05-15T17:53:29+02:00 Multiparametric analysis and validation in the western Mediterranean of three global OGCM hindcasts Enrique Vidal-Vijande Ananda Pascual Bernard Barnier Jean Marc Molines Nicolas Ferry Joaquín Tintore 2012-09-01T00:00:00Z https://doi.org/10.3989/scimar.03613.19D https://doaj.org/article/bd189a22d11e4c439bab779c3b31d9c8 EN eng Consejo Superior de Investigaciones Científicas http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1381 https://doaj.org/toc/0214-8358 https://doaj.org/toc/1886-8134 0214-8358 1886-8134 doi:10.3989/scimar.03613.19D https://doaj.org/article/bd189a22d11e4c439bab779c3b31d9c8 Scientia Marina, Vol 76, Iss S1, Pp 147-164 (2012) sea level altimetry temperature salinity modelling deep-water formation transports circulation mediterranean sea Aquaculture. Fisheries. Angling SH1-691 article 2012 ftdoajarticles https://doi.org/10.3989/scimar.03613.19D 2022-12-31T06:58:54Z We analyse a hierarchy of three 1/4° global numerical simulations (ORCA-025.G70 (G70), ORCA-025.G85 (G85) and GLORYS1V1 (GLORYS)) by assessing their performance against observational data in the western Mediterranean. When compared with the EN3_v2a temperature and salinity database, the simulations are capable of reproducing surface layer temperature interannual variability but G70 is inaccurate with intermediate and deep-layer trends. This aspect is improved by the increased vertical resolution of G85 and by data assimilation in GLORYS. Salinity is the most problematic parameter because of the imbalance of the freshwater budget derived from inaccuracies in the atmospheric forcing parameters. Surface salinity restoring is needed in order to avoid salinity drift and inaccurate sea-level trends. G70, with a stronger relaxation, has a lower trend closer to altimetric measurements than G85. Mean surface circulation is well reproduced for relatively large-scale signals. We further show that G85 and GLORYS provide evidence of the 2004-2005 and 2005-2006 deep convection events in the Gulf of Lion. Finally, transports through the main straits of the western Mediterranean are correct in order of magnitude, direction and seasonal cycle when compared with observations. This study contributes to the improvement of the ORCA hierarchy of simulations and points out the strengths and weaknesses of these simulations in the Mediterranean Sea. Article in Journal/Newspaper Orca Directory of Open Access Journals: DOAJ Articles Scientia Marina 76 S1 147 164 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sea level altimetry temperature salinity modelling deep-water formation transports circulation mediterranean sea Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
sea level altimetry temperature salinity modelling deep-water formation transports circulation mediterranean sea Aquaculture. Fisheries. Angling SH1-691 Enrique Vidal-Vijande Ananda Pascual Bernard Barnier Jean Marc Molines Nicolas Ferry Joaquín Tintore Multiparametric analysis and validation in the western Mediterranean of three global OGCM hindcasts |
topic_facet |
sea level altimetry temperature salinity modelling deep-water formation transports circulation mediterranean sea Aquaculture. Fisheries. Angling SH1-691 |
description |
We analyse a hierarchy of three 1/4° global numerical simulations (ORCA-025.G70 (G70), ORCA-025.G85 (G85) and GLORYS1V1 (GLORYS)) by assessing their performance against observational data in the western Mediterranean. When compared with the EN3_v2a temperature and salinity database, the simulations are capable of reproducing surface layer temperature interannual variability but G70 is inaccurate with intermediate and deep-layer trends. This aspect is improved by the increased vertical resolution of G85 and by data assimilation in GLORYS. Salinity is the most problematic parameter because of the imbalance of the freshwater budget derived from inaccuracies in the atmospheric forcing parameters. Surface salinity restoring is needed in order to avoid salinity drift and inaccurate sea-level trends. G70, with a stronger relaxation, has a lower trend closer to altimetric measurements than G85. Mean surface circulation is well reproduced for relatively large-scale signals. We further show that G85 and GLORYS provide evidence of the 2004-2005 and 2005-2006 deep convection events in the Gulf of Lion. Finally, transports through the main straits of the western Mediterranean are correct in order of magnitude, direction and seasonal cycle when compared with observations. This study contributes to the improvement of the ORCA hierarchy of simulations and points out the strengths and weaknesses of these simulations in the Mediterranean Sea. |
format |
Article in Journal/Newspaper |
author |
Enrique Vidal-Vijande Ananda Pascual Bernard Barnier Jean Marc Molines Nicolas Ferry Joaquín Tintore |
author_facet |
Enrique Vidal-Vijande Ananda Pascual Bernard Barnier Jean Marc Molines Nicolas Ferry Joaquín Tintore |
author_sort |
Enrique Vidal-Vijande |
title |
Multiparametric analysis and validation in the western Mediterranean of three global OGCM hindcasts |
title_short |
Multiparametric analysis and validation in the western Mediterranean of three global OGCM hindcasts |
title_full |
Multiparametric analysis and validation in the western Mediterranean of three global OGCM hindcasts |
title_fullStr |
Multiparametric analysis and validation in the western Mediterranean of three global OGCM hindcasts |
title_full_unstemmed |
Multiparametric analysis and validation in the western Mediterranean of three global OGCM hindcasts |
title_sort |
multiparametric analysis and validation in the western mediterranean of three global ogcm hindcasts |
publisher |
Consejo Superior de Investigaciones Científicas |
publishDate |
2012 |
url |
https://doi.org/10.3989/scimar.03613.19D https://doaj.org/article/bd189a22d11e4c439bab779c3b31d9c8 |
genre |
Orca |
genre_facet |
Orca |
op_source |
Scientia Marina, Vol 76, Iss S1, Pp 147-164 (2012) |
op_relation |
http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1381 https://doaj.org/toc/0214-8358 https://doaj.org/toc/1886-8134 0214-8358 1886-8134 doi:10.3989/scimar.03613.19D https://doaj.org/article/bd189a22d11e4c439bab779c3b31d9c8 |
op_doi |
https://doi.org/10.3989/scimar.03613.19D |
container_title |
Scientia Marina |
container_volume |
76 |
container_issue |
S1 |
container_start_page |
147 |
op_container_end_page |
164 |
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1766161186019082240 |