Transports across the 2002 Greenland-Portugal Ovide section and comparison with 1997.
International audience The first Ovide cruise occurred in June–July 2002 on R/V Thalassa between Greenland and Portugal. The absolute transports across the Ovide line are estimated using a box inverse model constrained by direct acoustic Doppler current profiler velocity measurements and by an overa...
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ftunivbrest:oai:HAL:hal-00271080v1 2024-06-23T07:53:17+00:00 Transports across the 2002 Greenland-Portugal Ovide section and comparison with 1997. Lherminier, P. Mercier, H. Gourcuff, C. Alvarez, M. Bacon, S. Kermabon, C. 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) Instituto de Investigaciones Marinas (IIM) Consejo Superior de Investigaciones Cientificas España = Spanish National Research Council Spain (CSIC) National Oceanography Centre (NOC) 2007 https://hal.science/hal-00271080 https://doi.org/10.1029/2006JC003716 en eng HAL CCSD Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1029/2006JC003716 hal-00271080 https://hal.science/hal-00271080 doi:10.1029/2006JC003716 ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.science/hal-00271080 Journal of Geophysical Research. Oceans, 2007, 112, pp.C07003. ⟨10.1029/2006JC003716⟩ North Atlantic circulation meridional overturning cell hydrographic section [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2007 ftunivbrest https://doi.org/10.1029/2006JC003716 2024-06-11T00:00:21Z International audience The first Ovide cruise occurred in June–July 2002 on R/V Thalassa between Greenland and Portugal. The absolute transports across the Ovide line are estimated using a box inverse model constrained by direct acoustic Doppler current profiler velocity measurements and by an overall mass balance (±3 Sv, where 1 Sv = 106 m3 s−1) across the section. Main currents are studied and compared to the results of the similar Fourex section performed in August 1997 and revisited here. The meridional overturning cell (MOC) is estimated in two different ways, both leading to a significantly lower value in June 2002 than in August 1997, consistent with the relative strength of the main components of the MOC (North Atlantic Current and deep western boundary current). It has been found that the MOC calculated on density levels is more robust and meaningful than when calculated on depth levels, and it is found to be 16.9 ± 1.0 Sv in 2002 versus 19.2 ± 0.9 Sv in 1997. The 2002 heat transport of 0.44 ± 0.04 × 1015 W is also significantly different from the 0.66 ± 0.05 × 1015 W found in 1997, but it is consistent with the much weaker integrated warm water transport across the section than in 1997. Article in Journal/Newspaper Greenland north atlantic current North Atlantic Université de Bretagne Occidentale: HAL Greenland Journal of Geophysical Research 112 C7 |
institution |
Open Polar |
collection |
Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
North Atlantic circulation meridional overturning cell hydrographic section [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
North Atlantic circulation meridional overturning cell hydrographic section [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Lherminier, P. Mercier, H. Gourcuff, C. Alvarez, M. Bacon, S. Kermabon, C. Transports across the 2002 Greenland-Portugal Ovide section and comparison with 1997. |
topic_facet |
North Atlantic circulation meridional overturning cell hydrographic section [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The first Ovide cruise occurred in June–July 2002 on R/V Thalassa between Greenland and Portugal. The absolute transports across the Ovide line are estimated using a box inverse model constrained by direct acoustic Doppler current profiler velocity measurements and by an overall mass balance (±3 Sv, where 1 Sv = 106 m3 s−1) across the section. Main currents are studied and compared to the results of the similar Fourex section performed in August 1997 and revisited here. The meridional overturning cell (MOC) is estimated in two different ways, both leading to a significantly lower value in June 2002 than in August 1997, consistent with the relative strength of the main components of the MOC (North Atlantic Current and deep western boundary current). It has been found that the MOC calculated on density levels is more robust and meaningful than when calculated on depth levels, and it is found to be 16.9 ± 1.0 Sv in 2002 versus 19.2 ± 0.9 Sv in 1997. The 2002 heat transport of 0.44 ± 0.04 × 1015 W is also significantly different from the 0.66 ± 0.05 × 1015 W found in 1997, but it is consistent with the much weaker integrated warm water transport across the section than in 1997. |
author2 |
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) Instituto de Investigaciones Marinas (IIM) Consejo Superior de Investigaciones Cientificas España = Spanish National Research Council Spain (CSIC) National Oceanography Centre (NOC) |
format |
Article in Journal/Newspaper |
author |
Lherminier, P. Mercier, H. Gourcuff, C. Alvarez, M. Bacon, S. Kermabon, C. |
author_facet |
Lherminier, P. Mercier, H. Gourcuff, C. Alvarez, M. Bacon, S. Kermabon, C. |
author_sort |
Lherminier, P. |
title |
Transports across the 2002 Greenland-Portugal Ovide section and comparison with 1997. |
title_short |
Transports across the 2002 Greenland-Portugal Ovide section and comparison with 1997. |
title_full |
Transports across the 2002 Greenland-Portugal Ovide section and comparison with 1997. |
title_fullStr |
Transports across the 2002 Greenland-Portugal Ovide section and comparison with 1997. |
title_full_unstemmed |
Transports across the 2002 Greenland-Portugal Ovide section and comparison with 1997. |
title_sort |
transports across the 2002 greenland-portugal ovide section and comparison with 1997. |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00271080 https://doi.org/10.1029/2006JC003716 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland north atlantic current North Atlantic |
genre_facet |
Greenland north atlantic current North Atlantic |
op_source |
ISSN: 2169-9275 EISSN: 2169-9291 Journal of Geophysical Research. Oceans https://hal.science/hal-00271080 Journal of Geophysical Research. Oceans, 2007, 112, pp.C07003. ⟨10.1029/2006JC003716⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2006JC003716 hal-00271080 https://hal.science/hal-00271080 doi:10.1029/2006JC003716 |
op_doi |
https://doi.org/10.1029/2006JC003716 |
container_title |
Journal of Geophysical Research |
container_volume |
112 |
container_issue |
C7 |
_version_ |
1802644874530390016 |