A5003864493- Oceanographic and Atmospheric Processes
- Marine and coastal ecosystems
- Methane Hydrates and Related Phenomena
- Climate variability and models
- Arctic and Antarctic ice dynamics
- Geology and Paleoclimatology Research
- Marine and fisheries research
- Atmospheric and Environmental Gas Dynamics
- Ocean Waves and Remote Sensing
- Tropical and Extratropical Cyclones Research
- Geological Studies and Exploration
- Oil Spill Detection and Mitigation
- Ocean Acidification Effects and Responses
- Geological Modeling and Analysis
- Hydrocarbon exploration and reservoir analysis
- Coastal and Marine Dynamics
- Geological and Geophysical Studies Worldwide
- Coral and Marine Ecosystems Studies
- Meteorological Phenomena and Simulations
- Cryospheric studies and observations
- Marine Biology and Ecology Research
Centre National de la Recherche Scientifique
1994-2019
Institut de Recherche pour le Développement
2009-2019
Université de Bretagne Occidentale
2009-2019
Institut Universitaire Européen de la Mer
2016-2019
Ifremer
1994-2019
Institut Océanographique
2019
Laboratory for Ocean Physics and Satellite Remote Sensing
2016-2018
Centre National de Recherches Météorologiques
1985-1988
Océanopolis
1984-1985
A mean state of the full‐depth summer circulation in Atlantic Ocean region between Cape Farewell (Greenland), Scotland and Greenland‐Scotland Ridge (GSR) is assessed by combining 2002–2008 yearly hydrographic measurements at 59.5°N, dynamic topography, satellite altimetry data available estimates Atlantic–Nordic Seas exchange. The absolute transports upper‐ocean, mid‐depth deep currents Meridional Overturning Circulation (MOC σ = 16.5 ± 2.2 Sv, 0 27.55) 59.5°N are quantified density space....
Abstract. The Atlantic Meridional Overturning Circulation (AMOC) impacts ocean and atmosphere temperatures on a wide range of temporal spatial scales. Here we use observational datasets to validate model-based inferences the usefulness thermodynamics theory in reconstructing AMOC variability at low frequency, further build this reconstruction provide prediction near-future (2019–2022) North state. An easily observed surface quantity – rate warm cold transformation water masses high latitudes...
During the SEMANE 2000 experiment southwest of Portugal, two meddies were found in near contact. These had hydrological radii about 20 and 30 km, thickness 900 m, maximum temperatures 12.45°C 13.45°C, salinities 36.52 36.78. The smaller meddy with more pronounced thermohaline anomalies was clearly double cored (at 750 1300 m depths) while wider one diffuse homogeneous. associated geostrophic velocities (referenced at m) locally reached 0.5 m/s meddy, 0.2 one. Three RAFOS floats deep‐drogued...
The eddy kinetic energy distribution in the Southern Ocean has been estimated from Seasat altimeter data available on repetitive orbits during 24 days September–October 1978 and 192 free‐drifting buoy trajectories obtained First GARP Global Experiment (FGGE) November to first months of 1980. A good spatial coherence is found between results these two independent methods 30°S 65°S. shows strong, activity near western boundaries (Argentine Basin, Mozambique Plateau, Tasman Sea, etc.)...
[1] The East Greenland Irminger Current (EGIC) decadal transport variability likely influences deep convection intensity in the Labrador and Seas but is poorly known yet. EGIC west of 2000 m isobath was estimated, for first time, between 1992 2009 by combining surface geostrophic velocities derived from altimetry with an estimate vertical structure statistically determined a moored array deployed 2004–2006. reconstructed 17-year time series then validated against independent estimates...
Abstract Hydrographic data collected in the Irminger Sea 1990s–2000s indicate that dense shelf waters carried by East Greenland Current south of Denmark Strait intermittently descend (cascade) down continental slope and merge with deep originating from Nordic Seas overflows. Repeat measurements on at ~200 km (65°–66°N) reveal are occasionally as (σ0 > 27.80) overflow-derived Deep Western Boundary (DWBC). Clear hydrographic traces upstream cascading found over 64.3°N, where densest...
Abstract. The GEOVIDE cruise was carried out in the subpolar North Atlantic (SPNA) along OVIDE section and across Labrador Sea May–June 2014. It planned to clarify distribution of trace elements their isotopes SPNA as part GEOTRACES international program. This paper focuses on state circulation thermohaline properties during cruise. In terms circulation, comparison with 2002–2012 mean shows a more intense Irminger Current also weaker Current, transfer volume transport from its northern...
Abstract The circulation and related transports at the southeast tip of Greenland are determined from direct current observations a moored meter array. measurements cover time span June 2004 to 2006. net mean total southwestward transport East Greenland–Irminger Current midshelf (20 km off coast 60°N) 2070-m isobath (about 100 offshore) was estimated as 17.3 Sv (Sv ≡ 106 m3 s−1) with an uncertainty 1 Sv. variability is characterized by standard deviation 3.8 peak-to-peak amplitude up 30...
Abstract A collision of Mediterranean Water dipoles in the Gulf Cadiz is studied here, using data from MedTop and Semane experiments. First, a eddy (meddy) was surveyed hydrologically November 2000 southwest Cape Saint Vincent. Then, this meddy drifted northeastward position, accompanied by cyclone (detected only via altimetry), thus forming first dipole. In February 2001, dipole measured just after its formation near Portimão Canyon. This second southwestward. The western eastern meddies...
Abstract. The GEOVIDE cruise, a collaborative project within the framework of international GEOTRACES programme, was conducted along French-led section in North Atlantic Ocean (Section GA01), between 15 May and 30 June 2014. In this special issue (https://www.biogeosciences.net/special_issue900.html), results from GEOVIDE, including physical oceanography trace element isotope cyclings, are presented among 18 articles. Here, scientific context, objectives, strategy provided, with an overview...
Abstract. The GEOVIDE cruise was carried out in the subpolar North Atlantic (SPNA), along OVIDE section and across Labrador Sea, May–June 2014. It planned to clarify distribution of trace elements their isotopes SPNA as part GEOTRACES international program. This paper focuses on state circulation thermohaline properties during cruise. In terms circulation, comparison with 2002–2012 mean shows a more intense Irminger current also weaker Current, transfer volume transport from its northern...
Abstract. The GEOVIDE cruise, a collaborative project within the framework of international GEOTRACES programme, was conducted along French-led section in North Atlantic Ocean (Section GA01), between 15 May and 30 June 2014. In this Special Issue, results from GEOVIDE, including physical oceanography trace element isotope cyclings, are presented among seventeen articles. Here, scientific context, objectives strategy provided, with an overview main articles published special issue.
The first European Remote Sensing satellite, known as ERS1, will be launched by 1989. Priority in the payload has been given to a comprehensive set of radar instruments designed observe surface wind and wave structure over oceans: scatterometer, altimeter synthetic aperture radar. aim TOSCANE program is contribute calibration validation ERS1 C-band scatterometer. accurate measurement ocean problem itself, but even if perfect measurements are done, question arises whether time averaged at...
Abstract. The Atlantic Meridional Overturning Circulation (AMOC) impacts ocean and atmosphere temperatures on a wide range of temporal spatial scales. Here we use observational data sets to validate model-based inferences the usefulness thermodynamics theory in reconstructing AMOC variability at low-frequency, further build this reconstruction provide prediction near-future (2019–2022) North state. An easily-observed surface quantity – rate warm cold transformation water masses high...