Southern Ocean Mixed-Layer Seasonal and Interannual Variations From Combined Satellite and In Situ Data
The depth of the upper ocean mixed layer provides fundamental information on the amount of seawater that directly interacts with the atmosphere. Its space-time variability modulates water mass formation and carbon sequestration processes related to both the physical and biological pumps. These proce...
Published in: | Journal of Geophysical Research: Oceans |
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Online Access: | http://hdl.handle.net/11367/64898 https://doi.org/10.1002/2017JC013314 http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2169-9291 |
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ftuninapoliparth:oai:ricerca.uniparthenope.it:11367/64898 2024-04-14T08:04:15+00:00 Southern Ocean Mixed-Layer Seasonal and Interannual Variations From Combined Satellite and In Situ Data Buongiorno Nardelli, B Guinehut, S Verbrugge, N Cotroneo, Y Zambianchi, E Iudicone, D Buongiorno Nardelli, B Guinehut, S Verbrugge, N Cotroneo, Y Zambianchi, E Iudicone, D 2017 http://hdl.handle.net/11367/64898 https://doi.org/10.1002/2017JC013314 http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2169-9291 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000422732100042 volume:122 issue:12 firstpage:10042 lastpage:10060 numberofpages:19 journal:JOURNAL OF GEOPHYSICAL RESEARCH. OCEANS http://hdl.handle.net/11367/64898 doi:10.1002/2017JC013314 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85038228517 http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2169-9291 Mixed layer Observation Southern Ocean Geophysic Oceanography Forestry Aquatic Science Ecology Condensed Matter Physic Water Science and Technology Soil Science Geochemistry and Petrology Earth-Surface Processe Physical and Theoretical Chemistry Polymers and Plastic Atmospheric Science Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Materials Chemistry2506 Metals and Alloy Paleontology info:eu-repo/semantics/article 2017 ftuninapoliparth https://doi.org/10.1002/2017JC013314 2024-03-21T18:00:01Z The depth of the upper ocean mixed layer provides fundamental information on the amount of seawater that directly interacts with the atmosphere. Its space-time variability modulates water mass formation and carbon sequestration processes related to both the physical and biological pumps. These processes are particularly relevant in the Southern Ocean, where surface mixed-layer depth estimates are generally obtained either as climatological fields derived from in situ observations or through numerical simulations. Here we demonstrate that weekly observation-based reconstructions can be used to describe the variations of the mixed-layer depth in the upper ocean over a range of space and time scales. We compare and validate four different products obtained by combining satellite measurements of the sea surface temperature, salinity, and dynamic topography and in situ Argo profiles. We also compute an ensemble mean and use the corresponding spread to estimate mixed-layer depth uncertainties and to identify the more reliable products. The analysis points out the advantage of synergistic approaches that include in input the sea surface salinity observations obtained through a multivariate optimal interpolation. Corresponding data allow to assess mixed-layer depth seasonal and interannual variability. Specifically, the maximum correlations between mixed-layer anomalies and the Southern Annular Mode are found at different time lags, related to distinct summer/winter responses in the Antarctic Intermediate Water and Sub-Antarctic Mode Waters main formation areas. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Università degli Studi di Napoli "Parthenope": CINECA IRIS Antarctic Southern Ocean The Antarctic Journal of Geophysical Research: Oceans 122 12 10042 10060 |
institution |
Open Polar |
collection |
Università degli Studi di Napoli "Parthenope": CINECA IRIS |
op_collection_id |
ftuninapoliparth |
language |
English |
topic |
Mixed layer Observation Southern Ocean Geophysic Oceanography Forestry Aquatic Science Ecology Condensed Matter Physic Water Science and Technology Soil Science Geochemistry and Petrology Earth-Surface Processe Physical and Theoretical Chemistry Polymers and Plastic Atmospheric Science Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Materials Chemistry2506 Metals and Alloy Paleontology |
spellingShingle |
Mixed layer Observation Southern Ocean Geophysic Oceanography Forestry Aquatic Science Ecology Condensed Matter Physic Water Science and Technology Soil Science Geochemistry and Petrology Earth-Surface Processe Physical and Theoretical Chemistry Polymers and Plastic Atmospheric Science Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Materials Chemistry2506 Metals and Alloy Paleontology Buongiorno Nardelli, B Guinehut, S Verbrugge, N Cotroneo, Y Zambianchi, E Iudicone, D Southern Ocean Mixed-Layer Seasonal and Interannual Variations From Combined Satellite and In Situ Data |
topic_facet |
Mixed layer Observation Southern Ocean Geophysic Oceanography Forestry Aquatic Science Ecology Condensed Matter Physic Water Science and Technology Soil Science Geochemistry and Petrology Earth-Surface Processe Physical and Theoretical Chemistry Polymers and Plastic Atmospheric Science Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Materials Chemistry2506 Metals and Alloy Paleontology |
description |
The depth of the upper ocean mixed layer provides fundamental information on the amount of seawater that directly interacts with the atmosphere. Its space-time variability modulates water mass formation and carbon sequestration processes related to both the physical and biological pumps. These processes are particularly relevant in the Southern Ocean, where surface mixed-layer depth estimates are generally obtained either as climatological fields derived from in situ observations or through numerical simulations. Here we demonstrate that weekly observation-based reconstructions can be used to describe the variations of the mixed-layer depth in the upper ocean over a range of space and time scales. We compare and validate four different products obtained by combining satellite measurements of the sea surface temperature, salinity, and dynamic topography and in situ Argo profiles. We also compute an ensemble mean and use the corresponding spread to estimate mixed-layer depth uncertainties and to identify the more reliable products. The analysis points out the advantage of synergistic approaches that include in input the sea surface salinity observations obtained through a multivariate optimal interpolation. Corresponding data allow to assess mixed-layer depth seasonal and interannual variability. Specifically, the maximum correlations between mixed-layer anomalies and the Southern Annular Mode are found at different time lags, related to distinct summer/winter responses in the Antarctic Intermediate Water and Sub-Antarctic Mode Waters main formation areas. |
author2 |
Buongiorno Nardelli, B Guinehut, S Verbrugge, N Cotroneo, Y Zambianchi, E Iudicone, D |
format |
Article in Journal/Newspaper |
author |
Buongiorno Nardelli, B Guinehut, S Verbrugge, N Cotroneo, Y Zambianchi, E Iudicone, D |
author_facet |
Buongiorno Nardelli, B Guinehut, S Verbrugge, N Cotroneo, Y Zambianchi, E Iudicone, D |
author_sort |
Buongiorno Nardelli, B |
title |
Southern Ocean Mixed-Layer Seasonal and Interannual Variations From Combined Satellite and In Situ Data |
title_short |
Southern Ocean Mixed-Layer Seasonal and Interannual Variations From Combined Satellite and In Situ Data |
title_full |
Southern Ocean Mixed-Layer Seasonal and Interannual Variations From Combined Satellite and In Situ Data |
title_fullStr |
Southern Ocean Mixed-Layer Seasonal and Interannual Variations From Combined Satellite and In Situ Data |
title_full_unstemmed |
Southern Ocean Mixed-Layer Seasonal and Interannual Variations From Combined Satellite and In Situ Data |
title_sort |
southern ocean mixed-layer seasonal and interannual variations from combined satellite and in situ data |
publishDate |
2017 |
url |
http://hdl.handle.net/11367/64898 https://doi.org/10.1002/2017JC013314 http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2169-9291 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000422732100042 volume:122 issue:12 firstpage:10042 lastpage:10060 numberofpages:19 journal:JOURNAL OF GEOPHYSICAL RESEARCH. OCEANS http://hdl.handle.net/11367/64898 doi:10.1002/2017JC013314 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85038228517 http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2169-9291 |
op_doi |
https://doi.org/10.1002/2017JC013314 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
122 |
container_issue |
12 |
container_start_page |
10042 |
op_container_end_page |
10060 |
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1796300678298075136 |