A5016789797- Oceanographic and Atmospheric Processes
- Tropical and Extratropical Cyclones Research
- Ocean Waves and Remote Sensing
- Climate variability and models
- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Meteorological Phenomena and Simulations
- Marine and fisheries research
- Ocean Acidification Effects and Responses
- Geological formations and processes
- Geophysics and Gravity Measurements
- Geology and Paleoclimatology Research
- Wastewater Treatment and Nitrogen Removal
- Arctic and Antarctic ice dynamics
- Aquatic and Environmental Studies
- Coral and Marine Ecosystems Studies
- Solar and Space Plasma Dynamics
Institut de Recherche pour le Développement
2011-2025
Centre National de la Recherche Scientifique
2011-2025
Institut Universitaire Européen de la Mer
2017-2025
Ifremer
2009-2025
Laboratory for Ocean Physics and Satellite Remote Sensing
2017-2025
Université de Bretagne Occidentale
2009-2025
Laboratoire d’Études en Géophysique et Océanographie Spatiales
2011-2023
Université Toulouse III - Paul Sabatier
2011-2014
Université de Toulouse
2014
Institut Océanographique
2008
Similarities between early 1997 and 2014 has prompted climate scientists to wonder if an El Niño matching the "El of century" could develop in 2014. Until April 2014, equatorial Pacific exhibited positive heat content anomalies along with eastward warm pool displacement similar those found during onset strong events. Yet July had retreated back its climatological positions temperature were much weaker than mid-1997. Dedicated oceanic simulations reveal that these weak interannual can be...
The spatial and temporal variability of nearshore winds in eastern boundary current systems affect the oceanic heat balance that drives sea surface temperature changes. In this study, regional atmospheric simulations are used to document such processes during an coastal jet event off central Chile. is well reproduced by model associated with migration anomalous anticyclone southeastern Pacific region October 2000. A robust feature simulation a sharp wind dropoff, which insensitive...
Abstract Ocean‐Waves‐Atmosphere (OWA) exchanges are not well represented in current Numerical Weather Prediction (NWP) systems, which can lead to large uncertainties tropical cyclone track and intensity forecasts. In order explore better understand the impact of OWA interactions on modeling, a fully coupled system based atmospheric model Meso‐NH, oceanic CROCO, wave WW3 called MSWC was designed applied case Bejisa (2013–2014). The simulation shows good agreement with literature available...
Abstract. The Eastern Boundary Upwelling Systems (EBUS) contribute to one fifth of the global catches in ocean. Often associated with Oxygen Minimum Zones (OMZs), EBUS represent key regions for oceanic nitrogen (N) cycle. Important bioavailable N loss due denitrification and anammox processes as well greenhouse gas emissions (e.g, N2O) occur also these EBUS. However, their dynamics are currently crudely represented models. In climate change context, improving our capability properly areas is...
Abstract During the RESILIENCE cruise aboard R/V Marion Dufresne II (April 19–24 May 2022), a high‐resolution in situ observation campaign investigated mesoscale dipole Mozambique Channel, composed of large anticyclonic ring and cyclonic eddy. Using an innovative adaptive sampling strategy to track its movement, we employed continuous observing systems, including Moving Vessel Profiler Acoustic Doppler Current Profilers, capture vertical sections. The results revealed distinct dipolar...
Abstract. Eastern boundary upwelling systems (EBUS) are regions of high primary production often associated with oxygen minimum zones (OMZs). They represent key for the oceanic nitrogen (N) cycle. By exporting organic matter (OM) and nutrients produced in coastal region to open ocean, EBUS can play an important role sustaining subtropical gyres. However, losses fixed inorganic N through denitrification anammox processes take place depleted environments such as EBUS, potentially mitigate...
Abstract The Sea Surface Temperature (SST) intraseasonal variability (40–90 days) along the coast of Peru is commonly attributed to efficient oceanic connection with equatorial variability. Here we investigate respective roles local and remote forcing on SST off central (8°S–16°S) during 2000–2008 period, based experimentation a regional ocean model. We conduct model experiments different open lateral boundary conditions and/or surface atmospheric (i.e., climatological or not). Despite...
Abstract The land‐sea breeze is resonant with the inertial response of ocean at critical latitude 30°N/S. 1‐D vertical numerical experiments were undertaken to study key drivers enhanced diapycnal mixing in coastal upwelling systems driven by diurnal‐inertial resonance near latitude. effect land boundary was implicitly included model through “Craig approximation” for first‐order cross‐shore surface elevation gradient response. indicates that shallow water depths (< ∼ 100 m), bottom shear...
The physical and biogeochemical functioning of eastern boundary upwelling systems is generally understood within the context - relaxation cycle, driven by sub-diurnal wind variability (i.e. with a time-scale greater than day). Here, we employ realistically configured validated 3D model southern Benguela system to quantify impact super-diurnal winds associated land-sea breeze (LSB). ocean response LSB found be particularly enhanced St Helena Bay (SHB), hotspot for productivity which also...
Abstract This study applied a previously used Lagrangian individual‐based model (IBM) for sardine in the Southern Benguela to an improved and more robust hydrodynamic investigate whether representative spatial coverage, greater horizontal vertical resolution, realistic winds representation of mesoscale features such as eddies filaments would give different results transport retention early life stages. Despite major differences between old new models, overall IBM were quite similar previous...
Abstract. As regions of high primary production and being often associated to Oxygen Minimum Zones (OMZs), Eastern Boundary Upwelling Systems (EBUS) represent key for the oceanic nitrogen (N) cycle. Indeed, by exporting Organic Matter (OM) nutrients produced in coastal region open ocean, EBUS can play an important role sustaining subtropical gyres. Losses fixed inorganic N, through denitrification anammox processes nitrous oxide (N2O) emissions atmosphere, take place oxygen depleted...
Abstract A 3‐km resolution regional ocean model is used to investigate the role of wind‐driven coastal circulation and mesoscale variability on inter‐annual transport success in southern Benguela between Cape Point (34°S) St Helena Bay (32°S) from 1992 2011. Lagrangian particles are released within top 100 m water column along an across‐shore transect off Point. Transport given by ratio number that reach over total released. The analysis anomalies their relationship with local wind forcing...