Steric sea level variability (1993-2010) in an ensemble of ocean reanalyses and objective analyses
Quantifying the effect of the seawater density changes on sea level variability is of crucial importance for climate change studies, as the sea level cumulative rise can be regarded as both an important climate change indicator and a possible danger for human activities in coastal areas. In this wor...
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Online Access: | https://centaur.reading.ac.uk/52358/ https://centaur.reading.ac.uk/52358/8/storto.pdf http://link.springer.com/article/10.1007/s00382-015-2554-9 |
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ftunivreading:oai:centaur.reading.ac.uk:52358 2024-06-23T07:56:57+00:00 Steric sea level variability (1993-2010) in an ensemble of ocean reanalyses and objective analyses Storto, Andrea Masina, Simona Balmaseda, Magdalena Guinehut, Stephanie Xue, Yan Szekely, Tanguy Fukumori, Ichiro Forget, Gael Chang, You-Soon Good, Simon A. Kohl, Armin Vernieres, Guillaume Ferry, Nicolas Peterson, K. Andrew Behringer, David Ishii, Masayoshi Masuda, Shuhei Fujii, Yosuke Toyoda, Takahiro Yin, Yonghong Valdivieso, Maria Barnier, Bernard Boyer, Tim Lee, Tony Gourrion, Jerome Wang, Ou Heimback, Patrick Rosati, Anthony Kovach, Robin Hernandez, Fabrice Martin, Matthew J. Kamachi, Masafumi Kuragano, Tsurane Mogensen, Kristian Alves, Oscar Haines, Keith Wang, Xiaochun 2017-08 text https://centaur.reading.ac.uk/52358/ https://centaur.reading.ac.uk/52358/8/storto.pdf http://link.springer.com/article/10.1007/s00382-015-2554-9 en eng Springer https://centaur.reading.ac.uk/52358/8/storto.pdf Storto, A., Masina, S., Balmaseda, M., Guinehut, S., Xue, Y., Szekely, T., Fukumori, I., Forget, G., Chang, Y.-S., Good, S. A., Kohl, A., Vernieres, G., Ferry, N., Peterson, K. A., Behringer, D., Ishii, M., Masuda, S., Fujii, Y., Toyoda, T., Yin, Y., Valdivieso, M. <https://centaur.reading.ac.uk/view/creators/90001086.html> orcid:0000-0002-1738-7016 , Barnier, B., Boyer, T., Lee, T., Gourrion, J., Wang, O., Heimback, P., Rosati, A., Kovach, R., Hernandez, F., Martin, M. J., Kamachi, M., Kuragano, T., Mogensen, K., Alves, O., Haines, K. <https://centaur.reading.ac.uk/view/creators/90000002.html> orcid:0000-0003-2768-2374 and Wang, X. (2017) Steric sea level variability (1993-2010) in an ensemble of ocean reanalyses and objective analyses. Climate Dynamics, 49 (3). pp. 709-729. ISSN 0930-7575 doi: https://doi.org/10.1007/s00382-015-2554-9 <https://doi.org/10.1007/s00382-015-2554-9> Article PeerReviewed 2017 ftunivreading https://doi.org/10.1007/s00382-015-2554-9 2024-06-11T15:04:44Z Quantifying the effect of the seawater density changes on sea level variability is of crucial importance for climate change studies, as the sea level cumulative rise can be regarded as both an important climate change indicator and a possible danger for human activities in coastal areas. In this work, as part of the Ocean Reanalysis Intercomparison Project, the global and regional steric sea level changes are estimated and compared from an ensemble of 16 ocean reanalyses and 4 objective analyses. These estimates are initially compared with a satellite-derived (altimetry minus gravimetry) dataset for a short period (2003–2010). The ensemble mean exhibits a significant high correlation at both global and regional scale, and the ensemble of ocean reanalyses outperforms that of objective analyses, in particular in the Southern Ocean. The reanalysis ensemble mean thus represents a valuable tool for further analyses, although large uncertainties remain for the inter-annual trends. Within the extended intercomparison period that spans the altimetry era (1993–2010), we find that the ensemble of reanalyses and objective analyses are in good agreement, and both detect a trend of the global steric sea level of 1.0 and 1.1 ± 0.05 mm/year, respectively. However, the spread among the products of the halosteric component trend exceeds the mean trend itself, questioning the reliability of its estimate. This is related to the scarcity of salinity observations before the Argo era. Furthermore, the impact of deep ocean layers is non-negligible on the steric sea level variability (22 and 12 % for the layers below 700 and 1500 m of depth, respectively), although the small deep ocean trends are not significant with respect to the products spread. Article in Journal/Newspaper Southern Ocean CentAUR: Central Archive at the University of Reading Southern Ocean Climate Dynamics 49 3 709 729 |
institution |
Open Polar |
collection |
CentAUR: Central Archive at the University of Reading |
op_collection_id |
ftunivreading |
language |
English |
description |
Quantifying the effect of the seawater density changes on sea level variability is of crucial importance for climate change studies, as the sea level cumulative rise can be regarded as both an important climate change indicator and a possible danger for human activities in coastal areas. In this work, as part of the Ocean Reanalysis Intercomparison Project, the global and regional steric sea level changes are estimated and compared from an ensemble of 16 ocean reanalyses and 4 objective analyses. These estimates are initially compared with a satellite-derived (altimetry minus gravimetry) dataset for a short period (2003–2010). The ensemble mean exhibits a significant high correlation at both global and regional scale, and the ensemble of ocean reanalyses outperforms that of objective analyses, in particular in the Southern Ocean. The reanalysis ensemble mean thus represents a valuable tool for further analyses, although large uncertainties remain for the inter-annual trends. Within the extended intercomparison period that spans the altimetry era (1993–2010), we find that the ensemble of reanalyses and objective analyses are in good agreement, and both detect a trend of the global steric sea level of 1.0 and 1.1 ± 0.05 mm/year, respectively. However, the spread among the products of the halosteric component trend exceeds the mean trend itself, questioning the reliability of its estimate. This is related to the scarcity of salinity observations before the Argo era. Furthermore, the impact of deep ocean layers is non-negligible on the steric sea level variability (22 and 12 % for the layers below 700 and 1500 m of depth, respectively), although the small deep ocean trends are not significant with respect to the products spread. |
format |
Article in Journal/Newspaper |
author |
Storto, Andrea Masina, Simona Balmaseda, Magdalena Guinehut, Stephanie Xue, Yan Szekely, Tanguy Fukumori, Ichiro Forget, Gael Chang, You-Soon Good, Simon A. Kohl, Armin Vernieres, Guillaume Ferry, Nicolas Peterson, K. Andrew Behringer, David Ishii, Masayoshi Masuda, Shuhei Fujii, Yosuke Toyoda, Takahiro Yin, Yonghong Valdivieso, Maria Barnier, Bernard Boyer, Tim Lee, Tony Gourrion, Jerome Wang, Ou Heimback, Patrick Rosati, Anthony Kovach, Robin Hernandez, Fabrice Martin, Matthew J. Kamachi, Masafumi Kuragano, Tsurane Mogensen, Kristian Alves, Oscar Haines, Keith Wang, Xiaochun |
spellingShingle |
Storto, Andrea Masina, Simona Balmaseda, Magdalena Guinehut, Stephanie Xue, Yan Szekely, Tanguy Fukumori, Ichiro Forget, Gael Chang, You-Soon Good, Simon A. Kohl, Armin Vernieres, Guillaume Ferry, Nicolas Peterson, K. Andrew Behringer, David Ishii, Masayoshi Masuda, Shuhei Fujii, Yosuke Toyoda, Takahiro Yin, Yonghong Valdivieso, Maria Barnier, Bernard Boyer, Tim Lee, Tony Gourrion, Jerome Wang, Ou Heimback, Patrick Rosati, Anthony Kovach, Robin Hernandez, Fabrice Martin, Matthew J. Kamachi, Masafumi Kuragano, Tsurane Mogensen, Kristian Alves, Oscar Haines, Keith Wang, Xiaochun Steric sea level variability (1993-2010) in an ensemble of ocean reanalyses and objective analyses |
author_facet |
Storto, Andrea Masina, Simona Balmaseda, Magdalena Guinehut, Stephanie Xue, Yan Szekely, Tanguy Fukumori, Ichiro Forget, Gael Chang, You-Soon Good, Simon A. Kohl, Armin Vernieres, Guillaume Ferry, Nicolas Peterson, K. Andrew Behringer, David Ishii, Masayoshi Masuda, Shuhei Fujii, Yosuke Toyoda, Takahiro Yin, Yonghong Valdivieso, Maria Barnier, Bernard Boyer, Tim Lee, Tony Gourrion, Jerome Wang, Ou Heimback, Patrick Rosati, Anthony Kovach, Robin Hernandez, Fabrice Martin, Matthew J. Kamachi, Masafumi Kuragano, Tsurane Mogensen, Kristian Alves, Oscar Haines, Keith Wang, Xiaochun |
author_sort |
Storto, Andrea |
title |
Steric sea level variability (1993-2010) in an ensemble of ocean reanalyses and objective analyses |
title_short |
Steric sea level variability (1993-2010) in an ensemble of ocean reanalyses and objective analyses |
title_full |
Steric sea level variability (1993-2010) in an ensemble of ocean reanalyses and objective analyses |
title_fullStr |
Steric sea level variability (1993-2010) in an ensemble of ocean reanalyses and objective analyses |
title_full_unstemmed |
Steric sea level variability (1993-2010) in an ensemble of ocean reanalyses and objective analyses |
title_sort |
steric sea level variability (1993-2010) in an ensemble of ocean reanalyses and objective analyses |
publisher |
Springer |
publishDate |
2017 |
url |
https://centaur.reading.ac.uk/52358/ https://centaur.reading.ac.uk/52358/8/storto.pdf http://link.springer.com/article/10.1007/s00382-015-2554-9 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
https://centaur.reading.ac.uk/52358/8/storto.pdf Storto, A., Masina, S., Balmaseda, M., Guinehut, S., Xue, Y., Szekely, T., Fukumori, I., Forget, G., Chang, Y.-S., Good, S. A., Kohl, A., Vernieres, G., Ferry, N., Peterson, K. A., Behringer, D., Ishii, M., Masuda, S., Fujii, Y., Toyoda, T., Yin, Y., Valdivieso, M. <https://centaur.reading.ac.uk/view/creators/90001086.html> orcid:0000-0002-1738-7016 , Barnier, B., Boyer, T., Lee, T., Gourrion, J., Wang, O., Heimback, P., Rosati, A., Kovach, R., Hernandez, F., Martin, M. J., Kamachi, M., Kuragano, T., Mogensen, K., Alves, O., Haines, K. <https://centaur.reading.ac.uk/view/creators/90000002.html> orcid:0000-0003-2768-2374 and Wang, X. (2017) Steric sea level variability (1993-2010) in an ensemble of ocean reanalyses and objective analyses. Climate Dynamics, 49 (3). pp. 709-729. ISSN 0930-7575 doi: https://doi.org/10.1007/s00382-015-2554-9 <https://doi.org/10.1007/s00382-015-2554-9> |
op_doi |
https://doi.org/10.1007/s00382-015-2554-9 |
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Climate Dynamics |
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49 |
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