A synthesis of the POMME physical data set: One year monitoring of the upper layer.
International audience The Programme Océan Multidisciplinaire Méso Echelle (POMME) experiment was designed to describe and quantify the role of mesoscale processes in the subduction of mode waters in the northeast Atlantic. During 1 year (September 2000–October 2001), in situ measurements were condu...
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ftunivnantes:oai:HAL:hal-00270804v1 2023-05-15T17:41:19+02:00 A synthesis of the POMME physical data set: One year monitoring of the upper layer. Gaillard, F. Mercier, H. 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) 2005 https://hal.science/hal-00270804 https://doi.org/10.1029/2004JC002764 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2004JC002764 hal-00270804 https://hal.science/hal-00270804 doi:10.1029/2004JC002764 ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-00270804 Journal of Geophysical Research, 2005, 110, pp.C07S07. ⟨10.1029/2004JC002764⟩ mixed layer mode water subduction northeast Atlantic mesoscale upper ocean seasonal cycle [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2005 ftunivnantes https://doi.org/10.1029/2004JC002764 2023-02-08T06:16:45Z International audience The Programme Océan Multidisciplinaire Méso Echelle (POMME) experiment was designed to describe and quantify the role of mesoscale processes in the subduction of mode waters in the northeast Atlantic. During 1 year (September 2000–October 2001), in situ measurements were conducted over a 8° square area centered on 18°W, 42°N. We present the synthesis of the physical data set collected during this experiment. To improve time and space coverages, these measurements are combined with satellite information from sea surface temperature and altimetry. Daily fields of temperature, salinity, and stream function are produced over a seasonal cycle with a simplified Kalman filter. We analyze the annual cycle of the upper layer. The 1 year mean circulation in the upper 400 m resembles the scheme proposed by Paillet and Mercier (1997). The meridional component of the flow carries cold water southward, thus contributing to cool the POMME area. The annual mean heat budget shows that this advection by the mean current nearly balances the warming by the surface heat fluxes. The mixed layer maximum depth is reached in March. It increases, in zonal averages, from 100 m south of 38°N to more than 270 m north of 45°N and, remarkably, is shaped by the mesoscale. The subpolar mode water formed in the north of the POMME area has a lower density (26.8–27.0) than the mode water formed in the years 1988–1990 that Paillet and Arhan (1996) found in the density range (27.0–27.1). This mode water is continuously advected southward across the 42°N latitude, leading to an annual mean transport of 1.4 106 m3 s−1. Article in Journal/Newspaper Northeast Atlantic Université de Nantes: HAL-UNIV-NANTES Journal of Geophysical Research 110 C7 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
mixed layer mode water subduction northeast Atlantic mesoscale upper ocean seasonal cycle [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
mixed layer mode water subduction northeast Atlantic mesoscale upper ocean seasonal cycle [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Gaillard, F. Mercier, H. Kermabon, C. A synthesis of the POMME physical data set: One year monitoring of the upper layer. |
topic_facet |
mixed layer mode water subduction northeast Atlantic mesoscale upper ocean seasonal cycle [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The Programme Océan Multidisciplinaire Méso Echelle (POMME) experiment was designed to describe and quantify the role of mesoscale processes in the subduction of mode waters in the northeast Atlantic. During 1 year (September 2000–October 2001), in situ measurements were conducted over a 8° square area centered on 18°W, 42°N. We present the synthesis of the physical data set collected during this experiment. To improve time and space coverages, these measurements are combined with satellite information from sea surface temperature and altimetry. Daily fields of temperature, salinity, and stream function are produced over a seasonal cycle with a simplified Kalman filter. We analyze the annual cycle of the upper layer. The 1 year mean circulation in the upper 400 m resembles the scheme proposed by Paillet and Mercier (1997). The meridional component of the flow carries cold water southward, thus contributing to cool the POMME area. The annual mean heat budget shows that this advection by the mean current nearly balances the warming by the surface heat fluxes. The mixed layer maximum depth is reached in March. It increases, in zonal averages, from 100 m south of 38°N to more than 270 m north of 45°N and, remarkably, is shaped by the mesoscale. The subpolar mode water formed in the north of the POMME area has a lower density (26.8–27.0) than the mode water formed in the years 1988–1990 that Paillet and Arhan (1996) found in the density range (27.0–27.1). This mode water is continuously advected southward across the 42°N latitude, leading to an annual mean transport of 1.4 106 m3 s−1. |
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) |
format |
Article in Journal/Newspaper |
author |
Gaillard, F. Mercier, H. Kermabon, C. |
author_facet |
Gaillard, F. Mercier, H. Kermabon, C. |
author_sort |
Gaillard, F. |
title |
A synthesis of the POMME physical data set: One year monitoring of the upper layer. |
title_short |
A synthesis of the POMME physical data set: One year monitoring of the upper layer. |
title_full |
A synthesis of the POMME physical data set: One year monitoring of the upper layer. |
title_fullStr |
A synthesis of the POMME physical data set: One year monitoring of the upper layer. |
title_full_unstemmed |
A synthesis of the POMME physical data set: One year monitoring of the upper layer. |
title_sort |
synthesis of the pomme physical data set: one year monitoring of the upper layer. |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.science/hal-00270804 https://doi.org/10.1029/2004JC002764 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-00270804 Journal of Geophysical Research, 2005, 110, pp.C07S07. ⟨10.1029/2004JC002764⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2004JC002764 hal-00270804 https://hal.science/hal-00270804 doi:10.1029/2004JC002764 |
op_doi |
https://doi.org/10.1029/2004JC002764 |
container_title |
Journal of Geophysical Research |
container_volume |
110 |
container_issue |
C7 |
_version_ |
1766142818277916672 |