A5045473238- Oceanographic and Atmospheric Processes
- Marine and coastal ecosystems
- Marine and fisheries research
- Ocean Acidification Effects and Responses
- Meteorological Phenomena and Simulations
- Coral and Marine Ecosystems Studies
- Climate variability and models
- Ocean Waves and Remote Sensing
- Marine Biology and Ecology Research
- Atmospheric and Environmental Gas Dynamics
- Coastal and Marine Management
- Marine and environmental studies
- Microplastics and Plastic Pollution
- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Traffic Prediction and Management Techniques
- Arctic and Russian Policy Studies
- Healthcare Systems and Challenges
- Stock Market Forecasting Methods
- Ichthyology and Marine Biology
- Lattice Boltzmann Simulation Studies
- Geological Studies and Exploration
- Wind and Air Flow Studies
- Global Trade and Competitiveness
- Generative Adversarial Networks and Image Synthesis
Mercator Ocean (France)
2020-2024
École nationale d'ingénieurs de Brest
2022
Universidad Católica del Norte
2021
National Oceanography Centre
2015-2019
University of Southampton
2015-2016
Ocean warming, acidification, deoxygenation and reduced productivity are widely considered to be the major stressors ocean ecosystems induced by emissions of CO2 . However, an overlooked stressor is change in circulation response climate change. Strong changes intensity position western boundary currents have already been observed, consequences such for beginning emerge. In this study, we address climatically on a global scale but relevant propagule dispersal species inhabiting shelf...
Subtropical gyres are the oceanic regions where plastic litter accumulates over long timescales, exposing surrounding islands to contamination, with potentially severe consequences on marine life. Islands' exposure such contaminants, littered distances in or terrestrial habitats, is due ocean currents that can transport ranges. Here, this issue addressed for Easter Island ecoregion (EIE). High-resolution circulation models used a Lagrangian particle-tracking tool identify connectivity...
Plastic pollution has been reported in the North Atlantic Ocean since 1970s, yet limited data over subsequent decades pose challenges when assessing spatio-temporal trends relation to global leakages and intervention strategies. This study quantified microplastics within upper ocean along a longitudinal transect of its subtropical gyre. Microplastics were sampled from surface subsurface (-25 m) water using manta trawl NIKSIN bottle respectively. The polymer community varied significantly...
Accurate ocean forecasting is essential for a range of critical applications, from maritime safety to climate adaptation strategies. Given the inherent uncertainties in dynamics, ability predict probable states key informed decision-making. Here, we present MerCast, probabilistic model designed redefine global-scale prediction by quantifying uncertainty state estimates. Trained on decades high-resolution reanalysis products, MerCast integrates diffusion models generate ensembles daily...
A first attempt was made to quantify the impact of assimilation Surface Water Ocean Topography (SWOT) swath altimeter data in a global 1/12° high resolution analysis and forecasting system through series Observing System Simulation Experiments (OSSEs). The OSSE framework (Nature Run Free Run) scheme have been described detail companion article ( Benkiran et al., 2021 ). assimilating from SWOT three nadir altimeters quantified by estimating forecast error variances for sea surface height...
Regional processes play a key role in the global carbon budget. Major ocean CO2 uptake at mid-latitudes counteracts release tropics, which is modulated by episodes of marine heatwaves. Yet, we lack essential knowledge on persistent heatwaves, and their effect sensitive areas. Here show, using 1985-2017 joint analysis reconstructions, reanalysis situ satellite data, that heatwaves occur major Average air-sea flux density changes from are strongest Pacific Ocean with 40 ± 9% reduction tropics...
Accurate prediction of ocean surface currents is important for marine safety, ship routing, tracking pollutants and in coupled forecasting. Presently, velocity observations are not routinely assimilated global forecasting systems, largely due to the sparsity observation network. Several satellite missions now being proposed with capability measure Total Surface Current Velocities (TSCV). If successful, these would substantially increase coverage current could improve accuracy forecasts...
The European Commission launched the Digital Twin of Ocean (EDITO) at One Summit in Brest, France, February 2022. EU is building infrastructure backbone EDITO through two projects (EDITO-Model Lab and EDITO-Infra) finishing respectively beginning end 2025 with a continuity until 2028 EDITO2. This aligned Copernicus Marine Service where strong connection will be managed during new starting phase (2025-2028). presentation focus on main achievements demonstration global ocean model component...
For the countries bordering tropical Western Indian Ocean (TWIO), living marine resources are vital for food security. However, this region has largely escaped attention of studies investigating potential impacts future climate change on environment. Understanding how ecosystems in coastal East Africa may respond to various climatic stressors is development conservation and other ocean management policies that can help adapt natural associated human systems. Here, we use a high-resolution...
Here we describe an interdisciplinary and multi-country initiative to develop rapid, participatory methods assess the vulnerability of coastal communities facilitate adaptation climate change in data-poor regions. The were applied Madagascar as a case study. centred on exploratory research exercise two south-west Madagascar, workshop held Antananarivo June 2016, combined with component communicating ocean science stakeholders. It utilised innovative rapid approaches combine global local...
Balancing blue growth with the conservation of wild species and habitats is a key challenge for global ocean management. This exacerbated in Global South nations, such as Tanzania, where climate-driven change requires delicate marine spatial planning (MSP) trade-offs to ensure climate resilience resources relied upon by coastal communities. Here, we identified challenges opportunities that presents near-term management Tanzania's artisanal fishing sector, protected areas seaweed farming....
Abstract Marine heatwaves (MHWs) represent anomalously warm temperature conditions of seawater that may affect marine life and ocean biogeochemistry. Under such conditions, phytoplankton communities modify their structure functions, resilience is not assured. This study characterizes the impact MHWs on spring bloom in North‐Western Mediterranean Sea. Here, we synergistically combine autonomous observations from BioGeoChemical‐Argo floats, satellite‐based ecosystem model data, show MHW events...
Operational forecasts rely on accurate and timely observations it is important that the ocean forecasting community demonstrates impact of those to observing its funders while providing feedback requirements for design system. One way in which new can be assessed through Observing System Simulation Experiments (OSSEs). Various satellite missions are being proposed measure Total Surface Current Velocities (TSCV). This study uses OSSEs assess potential assimilating TSCV observations. have been...
Abstract. In this paper, the Copernicus Ocean State Report offers detailed scientific analysis of ocean under climate change, variability, and extremes in northeastern Atlantic adjacent seas. Major results show that seas have experienced consistent warming, with sea surface temperatures increasing at a rate 0.25 ± 0.03 °C per decade since 1982, doubling global average trend. This warming is most pronounced Black Sea, Mediterranean Baltic Sea. Sea levels risen significantly over past 30...
Abstract Numerous observations demonstrate that considerable spatial variability exists in components of the marine planktonic ecosystem at mesoscale and submesoscale (100 km–1 km). The causes consequences physical processes these scales (“eddy advection”) influencing biogeochemistry have received much attention. Less studied, nonlinear nature most ecological biogeochemical interactions means such has for regional estimates including primary production grazing, independent processes. This...
Mesophotic ecosystems (50–400 m depth) of the southeastern Pacific have rarely been studied because logistical challenges in sampling across this remote zone. This study assessed how oxygen concentrations and other environmental predictors explain variation echinoderm assemblages at these mesophotic systems, where group is among predominant fauna. We compiled data on taxa 91 stations, from historical recent surveys (between 1950 2019), covering a longitudinal gradient approximately 3,700 km...
Abstract The complex patterns observed in marine phytoplankton distributions arise from the interplay of biological and physical processes, but nature balance remains uncertain centuries after first observations. Previous observations have shown a consistent trend decreasing variability with length scale. Influenced by similar scaling found for properties water that inhabit, “universal” theories been proposed simultaneously explain seen meters to hundreds kilometers. However, data on...
Abstract. The stranding of Sargassum seaweed on the Caribbean archipelago beaches constitutes real socio-economic, ecological and health problems. Météo-France currently operates a model drift forecast (called MOTHY) forced by ocean currents from global analysis forecasting system GLO12 at 1/12° (∼9 km over Caribbean) operated Mercator Ocean International (MOi). In order to improve forecast, MOi has developed regional high-resolution CAR36 1/36° (∼3 km) centred in region. addition finer...
Monitoring and predicting global ocean biogeochemistry marine ecosystems is one of the biggest challenges for coming decade. In operational systems, biogeochemical (BGC) models are forced – or coupled with physical fields that generally constrained by data assimilation temperature, salinity sea level anomalies. Yet, while substantially improves simulated fields, BGC such analyses commonly degraded, more especially in equatorial regions. Here impacts on surface chlorophyll nitrate...
Abstract Marine protected areas (MPAs) are becoming a widely used tool for the conservation of biodiversity and fishery management; however, most these designed without prior knowledge basic ecological aspects species that they trying to protect. This study investigated movement two top predators: Galapagos shark, Carcharhinus galapagensis , yellowtail amberjack, Seriola lalandi in around Motu Motiro Hiva Park (MMHMP) using MiniPAT satellite tags determine effectiveness this MPA protection...
Balancing blue growth with the conservation of wild species and habitats is a key challenge for global ocean management. This exacerbated in Global South nations, such as Tanzania, where climate-driven change requires delicate marine spatial planning (MSP) trade-offs to ensure climate resilience resources relied upon by coastal communities. Here, we identified challenges opportunities that presents near-term management Tanzania's artisanal fishing sector, protected areas seaweed farming....