Integral descriptors of the vertical structure of the ocean
We propose a simple polynomial expression for neutral density and nutrients as a function of potential temperature, pressure and salinity. The expression is applied to the 1988 North Atlantic A16N WOCE meridional section and the polynomial coefficients are calculated using an inverse technique. The...
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Online Access: | http://hdl.handle.net/10553/49046 https://doi.org/10.1007/s10872-009-0043-7 |
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ftunivlaspalmas:oai:https://accedacris.ulpgc.es:10553/49046 2023-05-15T17:34:27+02:00 Integral descriptors of the vertical structure of the ocean MacHín, Francisco Pelegrí Llopart,José Luis Pelegri, Josep Machin, Francisco 6602804374 7003869003 1451397 358123 2009 http://hdl.handle.net/10553/49046 https://doi.org/10.1007/s10872-009-0043-7 eng eng 0916-8370 Journal of Oceanography 0916-8370 http://hdl.handle.net/10553/49046 doi:10.1007/s10872-009-0043-7 72449177428 000268248500005 510 499 65 L-5815-2014 A-9287-2009 Journal of Oceanography [ISSN 0916-8370], v. 65, p. 499-510 251007 Oceanografía física Inverse model WOCE A16N section Nutrients Neutral density Water mass Interdecadal changes Ocean descriptor 2009 ftunivlaspalmas https://doi.org/10.1007/s10872-009-0043-7 2020-02-12T00:09:52Z We propose a simple polynomial expression for neutral density and nutrients as a function of potential temperature, pressure and salinity. The expression is applied to the 1988 North Atlantic A16N WOCE meridional section and the polynomial coefficients are calculated using an inverse technique. The resulting polynomials show good skill in reproducing the nutrients and density structure, as verified through an analysis of variance (ANOVA) test. The large-scale changes in the polynomial coefficients occur between equatorial (E), tropical (T), subtropical (ST), and subpolar (SP) waters. The temperature and pressure coefficients experience substantial changes at all transitions (E-T, T-ST, and ST-SP), while the salinity ones only have major variations at the T-ST transition. Mesoscale-like oscillations occur all along the section but are relatively small, except between about 40 and 50°N, in a region of rough bottom topography. The density field is reconstructed using individual and group coefficients, and the contribution of each coefficient is identified. The method is also applied to analyze the neutral density distribution in a nearly identical 2003 section, removing near-surface density values that may be related to different warming/cooling of the surface layer. The results show close resemblances but also some significant variations, which are discussed in terms of interdecadal variability. Hence, we argue that the set of calculated coefficients provides good integral descriptors for the vertical structure of the ocean. Other/Unknown Material North Atlantic Universidad de Las Palmas de Gran Canaria: Acceda Journal of Oceanography 65 4 499 510 |
institution |
Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
op_collection_id |
ftunivlaspalmas |
language |
English |
topic |
251007 Oceanografía física Inverse model WOCE A16N section Nutrients Neutral density Water mass Interdecadal changes Ocean descriptor |
spellingShingle |
251007 Oceanografía física Inverse model WOCE A16N section Nutrients Neutral density Water mass Interdecadal changes Ocean descriptor MacHín, Francisco Pelegrí Llopart,José Luis Integral descriptors of the vertical structure of the ocean |
topic_facet |
251007 Oceanografía física Inverse model WOCE A16N section Nutrients Neutral density Water mass Interdecadal changes Ocean descriptor |
description |
We propose a simple polynomial expression for neutral density and nutrients as a function of potential temperature, pressure and salinity. The expression is applied to the 1988 North Atlantic A16N WOCE meridional section and the polynomial coefficients are calculated using an inverse technique. The resulting polynomials show good skill in reproducing the nutrients and density structure, as verified through an analysis of variance (ANOVA) test. The large-scale changes in the polynomial coefficients occur between equatorial (E), tropical (T), subtropical (ST), and subpolar (SP) waters. The temperature and pressure coefficients experience substantial changes at all transitions (E-T, T-ST, and ST-SP), while the salinity ones only have major variations at the T-ST transition. Mesoscale-like oscillations occur all along the section but are relatively small, except between about 40 and 50°N, in a region of rough bottom topography. The density field is reconstructed using individual and group coefficients, and the contribution of each coefficient is identified. The method is also applied to analyze the neutral density distribution in a nearly identical 2003 section, removing near-surface density values that may be related to different warming/cooling of the surface layer. The results show close resemblances but also some significant variations, which are discussed in terms of interdecadal variability. Hence, we argue that the set of calculated coefficients provides good integral descriptors for the vertical structure of the ocean. |
author2 |
Pelegri, Josep Machin, Francisco 6602804374 7003869003 1451397 358123 |
author |
MacHín, Francisco Pelegrí Llopart,José Luis |
author_facet |
MacHín, Francisco Pelegrí Llopart,José Luis |
author_sort |
MacHín, Francisco |
title |
Integral descriptors of the vertical structure of the ocean |
title_short |
Integral descriptors of the vertical structure of the ocean |
title_full |
Integral descriptors of the vertical structure of the ocean |
title_fullStr |
Integral descriptors of the vertical structure of the ocean |
title_full_unstemmed |
Integral descriptors of the vertical structure of the ocean |
title_sort |
integral descriptors of the vertical structure of the ocean |
publisher |
0916-8370 |
publishDate |
2009 |
url |
http://hdl.handle.net/10553/49046 https://doi.org/10.1007/s10872-009-0043-7 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Journal of Oceanography [ISSN 0916-8370], v. 65, p. 499-510 |
op_relation |
Journal of Oceanography 0916-8370 http://hdl.handle.net/10553/49046 doi:10.1007/s10872-009-0043-7 72449177428 000268248500005 510 499 65 L-5815-2014 A-9287-2009 |
op_doi |
https://doi.org/10.1007/s10872-009-0043-7 |
container_title |
Journal of Oceanography |
container_volume |
65 |
container_issue |
4 |
container_start_page |
499 |
op_container_end_page |
510 |
_version_ |
1766133298329812992 |