A5050454407- Oceanographic and Atmospheric Processes
- Climate variability and models
- Tropical and Extratropical Cyclones Research
- Marine and coastal ecosystems
- Ocean Waves and Remote Sensing
- Geological and Geophysical Studies
- Oil Spill Detection and Mitigation
- Water Quality Monitoring Technologies
- Maritime Navigation and Safety
- Mathematical and Theoretical Epidemiology and Ecology Models
- Ocean Acidification Effects and Responses
- Marine and fisheries research
- Global Energy and Sustainability Research
- Arctic and Antarctic ice dynamics
- Evolution and Genetic Dynamics
- Geological Studies and Exploration
- Methane Hydrates and Related Phenomena
- Geology and Paleoclimatology Research
Jet Propulsion Laboratory
2025
University of California, Los Angeles
2022-2024
NOAA Oceanic and Atmospheric Research
2023
Laboratoire d’Études en Géophysique et Océanographie Spatiales
2019-2021
Collecte Localisation Satellites (France)
2019-2020
Université Toulouse III - Paul Sabatier
2019-2020
Institut de Recherche pour le Développement
2019-2020
Université de Toulouse
2019-2020
Centre National de la Recherche Scientifique
2019-2020
Abstract Oceanic mixing, mostly driven by the breaking of internal waves at small scales in ocean interior, is major importance for circulation and response to future climate scenarios. Understanding how transfer their energy smaller from generation dissipation therefore an important step improving representation mixing models. In this study, processes leading cross-scale fluxes wave field are quantified using original decomposition approach a realistic numerical simulation California...
The Intermediate and Deep Equatorial Tropical Circulations (DEC DTC) consist of a complex system zonal jets. This paper attempts at unifying existing observations theories to present our current understanding this jets system. Recent in situ suggesting continuity between DEC DTC are confronted against the various generation mechanisms that have been proposed literature. key notion differentiate these previous studies lies so‐called “cascade mechanisms,” is, energy pathway equilibration...
Abstract Through interactions with the continental margins, incident low‐mode internal tides (ITs) can be reflected, scattered to high modes, transmitted onto shelf and dissipated. We investigate fate of remotely generated mode‐1 ITs in U.S. West Coast (USWC) margin using two 4‐km horizontal resolution regional simulations. These 1‐year long simulations have realistic stratification, atmospheric, tidal, sub‐tidal forcings. In addition, one these has remote wave (IW) forcing at open...
Low mode internal waves are able to propagate across ocean basins and modulate dynamics thousands of kilometers away from their generation sites. In this study, the impact remotely generated on wave energetics near U.S. West Coast is investigated with realistically forced regional simulations. At open boundaries, we impose high-frequency oceanic state variables obtained a global simulation realistic atmospheric astronomical tidal forcing. We use Discrete Fourier Transform (DFT) technique in...
The advances of numerical performances over the last decades have opened way for km-scale climate modelling, which not only improve representation state globally, but also allows to downscale information at a local scale where adaptation strategies are decided. In this context, it is interesting evaluate performance such models regional scale.In study, we capabilities coupled simulations delivered by EERIE (European Eddy-RIch Earth system models) project on North Atlantic coastal shelfs in...
Abstract The middepth ocean circulation in the tropical Pacific is dominated by sets of alternating eastward and westward jets. origin transport properties these flow features remain many ways an open question, all more crucial since their usual underestimation global models has been identified as a potential bias for misrepresentation oxygen minimum zones. In this study, we analyze water mass associated with systems jets using velocity hydrographic sections. Data acquired during dedicated...
Abstract Internal waves contain a large amount of energy in the ocean and are an important source turbulent mixing. Ocean mixing is relevant for climate because it drives vertical transport water, heat, carbon other tracers. Understanding life cycle internal waves, from generation to dissipation, therefore improving representation models. Here, we provide evidence regional realistic numerical simulation northeastern Pacific that wind can play role damping through current feedback. This...
In this paper, we analyse the results from a numerical model at high resolution. We focus on formation and maintenance of subsurface equatorial currents in Gulf Guinea base our analysis evolution potential vorticity (PV). highlight link between submesoscale processes (involving mixing, friction filamentation), mesoscale vortices mean area. simulation, eastward currents, South North Equatorial Undercurrents (SEUC NEUC respectively) Undercurrent (GUC), are shown to be linked westward located...
Abstract At the ocean surface, satellite observations have shown evidence of a large spectrum waves at low latitudes. However, very little is known about existence and properties deep variability. Most subsurface rely on localized measurements, which do not allow for global estimation this In study, we use velocity estimates, provided by Argo float drifts 1,000 m, to analyze spatial temporal distribution eddy kinetic energy (EKE) its spectral signature with an unprecedented time space...
Abstract At low latitudes in the ocean, deep currents are shaped into narrow jets flowing eastward and westward, reversing periodically with latitude between 15°S 15°N. These present from thermocline to bottom. The energy sources physical mechanisms responsible for their formation still debated poorly understood. This study explores role of destabilization intra-annual equatorial waves jets’ process, as these known be an important source at latitudes. focuses particularly on barotropic...
Abstract. Micronekton – small marine pelagic organisms around 1–10 cm in size are a key component of the ocean ecosystem, as they constitute main source forage for all larger predators. Moreover, mesopelagic micronekton that undergoes diel vertical migration (DVM) likely plays role transfer and storage CO2 deep ocean: this is known “biological pump”. SEAPODYM-MTL spatially explicit dynamical model micronekton. It simulates six functional groups vertically migrant nonmigrant (no DVM)...
Les courants océaniques jouent un rôle important dans le système climatique global grâce à leur capacité transporter et redistribuer la chaleur divers éléments chimiques l'échelle mondiale. Cependant, l'océan profond étant difficile d'accès, notre connaissance des marins au-delà de 200 mètres profondeur est très lacunaire. De récentes observations ont mis en lumière présence forts courants, appelés jets, entre 2 000 les régions équatoriales. À partir d'une approche mêlant observations,...
Within Task 5.3 “Regional Observing system simulation experiments and process modelling”; CLS is in charge of improving an ecosystem module for the ocean mid-trophic levels (i.e. micronekton) that utilizes multiple in-situ satellite data as input to derive predictions different trophic including fish [D5.5] has potential be implemented into routine services supported by a future IAOOS. With physical biogeochemical variables becoming available real-time, real-time monitoring marine resources...
Abstract. Micronekton – small marine pelagic organisms mostly in the size range 1–10 cm is a key component of ocean ecosystem, as it constitutes main source forage for all larger predators. Moreover, mesopelagic micronekton that undergoes Diel Vertical Migration (DVM) likely plays role transfer and storage CO2 deep ocean: so-called ‘biological pump’ mechanism. SEAPODYM-MTL spatially explicit dynamical model micronekton. It simulates six functional groups migrant non-migrant micronekton,...
<p><span xml:lang="EN-US" data-contrast="none"><span>SEAPODYM-LMTL is the Lower (zooplankton) and Mid (micronekton) Trophic levels model of Spatial Ecosystem </span></span><span data-contrast="none"><span>And</span></span><span...
<p>The deep tropical ocean circulation is dominated by systems of vertically and meridionally alternating zonal jets, known as the Equatorial Deep Jets (EDJs) Extra-Equatorial (EEJs) respectively. The energy sources physical mechanisms responsible for this are still poorly understood. Recent studies have suggested importance intra-annual equatorial waves to transfer their EDJs.</p><p>In study, we use idealized numerical simulations forced with a...
<p>We analyse the results from a numerical model at high resolution. We focus on formation and maintenance of subsurface equatorial currents in Gulf Guinea we base our analysis evolution potential vorticity (PV). highlight link between submesoscale processes (involving mixing, friction filamentation), mesoscale vortices mean area. In simulation, eastward currents, South North Equatorial Undercurrents (SEUC NEUC respectively) Undercurrent (GUC), are shown to be linked westward...