Nutrient mineralization rates and ratios in the eastern South Atlantic
International audience The physical and biogeochemical components of nutrients and inorganic carbon distributions along WOCE line A14 are objectively separated by means of a constrained least-squares regression analysis of the mixing of eastern South Atlantic water masses. Contrary to previous appro...
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ftunivnantes:oai:HAL:hal-00270838v1 2023-05-15T14:00:44+02:00 Nutrient mineralization rates and ratios in the eastern South Atlantic Brea, S. Álvarez-Salgado, X. A. Álvarez, M. Pérez, Fiz F. Mémery, Laurent Mercier, Herlé Messias, Marie-José Instituto de Investigaciones Marinas Consejo Superior de Investigaciones Científicas Madrid (CSIC) Laboratoire d'océanographie dynamique et de climatologie (LODYC) Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) School of Environmental Sciences Norwich University of East Anglia Norwich (UEA) 2004 https://hal.science/hal-00270838 https://doi.org/10.1029/2003JC002051 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2003JC002051 hal-00270838 https://hal.science/hal-00270838 doi:10.1029/2003JC002051 ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-00270838 Journal of Geophysical Research, 2004, 109, pp.C05030. ⟨10.1029/2003JC002051⟩ biogeochemical cycles South Atlantic water masses [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2004 ftunivnantes https://doi.org/10.1029/2003JC002051 2023-02-08T06:16:45Z International audience The physical and biogeochemical components of nutrients and inorganic carbon distributions along WOCE line A14 are objectively separated by means of a constrained least-squares regression analysis of the mixing of eastern South Atlantic water masses. Contrary to previous approaches, essentially devoted to the intricate South Atlantic circulation, this work is focused on the effects of circulation on nutrients and carbon biogeochemistry, with special emphasis on the stoichiometry and the rate of mineralization processes. Combination of nutrient and apparent CFC-age anomalies, derived from the mixing analysis, indicate faster mineralization rates in the equatorial (12 × 10−2 μmol P kg−1 yr−1) and subequatorial (5.3 × 10−2 μmol P kg−1 yr−1) than in the subtropical (4.3 × 10−2 μmol P kg−1 yr−1) regime at the South Atlantic Central Water (SACW) depth range. Lower rates are obtained in the Antarctic Intermediate Water (AAIW) domain (3.0 × 10−2 μmol P kg−1 yr−1). Significant variation with depth of O 2 /C/N/P anomalies indicates preferential mineralization of proteins in thermocline waters, as compared with the reference Redfield composition. Article in Journal/Newspaper Antarc* Antarctic Université de Nantes: HAL-UNIV-NANTES Antarctic The Antarctic Journal of Geophysical Research 109 C5 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
biogeochemical cycles South Atlantic water masses [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
biogeochemical cycles South Atlantic water masses [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Brea, S. Álvarez-Salgado, X. A. Álvarez, M. Pérez, Fiz F. Mémery, Laurent Mercier, Herlé Messias, Marie-José Nutrient mineralization rates and ratios in the eastern South Atlantic |
topic_facet |
biogeochemical cycles South Atlantic water masses [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The physical and biogeochemical components of nutrients and inorganic carbon distributions along WOCE line A14 are objectively separated by means of a constrained least-squares regression analysis of the mixing of eastern South Atlantic water masses. Contrary to previous approaches, essentially devoted to the intricate South Atlantic circulation, this work is focused on the effects of circulation on nutrients and carbon biogeochemistry, with special emphasis on the stoichiometry and the rate of mineralization processes. Combination of nutrient and apparent CFC-age anomalies, derived from the mixing analysis, indicate faster mineralization rates in the equatorial (12 × 10−2 μmol P kg−1 yr−1) and subequatorial (5.3 × 10−2 μmol P kg−1 yr−1) than in the subtropical (4.3 × 10−2 μmol P kg−1 yr−1) regime at the South Atlantic Central Water (SACW) depth range. Lower rates are obtained in the Antarctic Intermediate Water (AAIW) domain (3.0 × 10−2 μmol P kg−1 yr−1). Significant variation with depth of O 2 /C/N/P anomalies indicates preferential mineralization of proteins in thermocline waters, as compared with the reference Redfield composition. |
author2 |
Instituto de Investigaciones Marinas Consejo Superior de Investigaciones Científicas Madrid (CSIC) Laboratoire d'océanographie dynamique et de climatologie (LODYC) Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) School of Environmental Sciences Norwich University of East Anglia Norwich (UEA) |
format |
Article in Journal/Newspaper |
author |
Brea, S. Álvarez-Salgado, X. A. Álvarez, M. Pérez, Fiz F. Mémery, Laurent Mercier, Herlé Messias, Marie-José |
author_facet |
Brea, S. Álvarez-Salgado, X. A. Álvarez, M. Pérez, Fiz F. Mémery, Laurent Mercier, Herlé Messias, Marie-José |
author_sort |
Brea, S. |
title |
Nutrient mineralization rates and ratios in the eastern South Atlantic |
title_short |
Nutrient mineralization rates and ratios in the eastern South Atlantic |
title_full |
Nutrient mineralization rates and ratios in the eastern South Atlantic |
title_fullStr |
Nutrient mineralization rates and ratios in the eastern South Atlantic |
title_full_unstemmed |
Nutrient mineralization rates and ratios in the eastern South Atlantic |
title_sort |
nutrient mineralization rates and ratios in the eastern south atlantic |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.science/hal-00270838 https://doi.org/10.1029/2003JC002051 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-00270838 Journal of Geophysical Research, 2004, 109, pp.C05030. ⟨10.1029/2003JC002051⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2003JC002051 hal-00270838 https://hal.science/hal-00270838 doi:10.1029/2003JC002051 |
op_doi |
https://doi.org/10.1029/2003JC002051 |
container_title |
Journal of Geophysical Research |
container_volume |
109 |
container_issue |
C5 |
_version_ |
1766270079637389312 |