A5073446231- Oceanographic and Atmospheric Processes
- Marine and coastal ecosystems
- Climate variability and models
- Geology and Paleoclimatology Research
- Arctic and Antarctic ice dynamics
- Geophysics and Gravity Measurements
- Marine and fisheries research
- Marine Biology and Ecology Research
- Geochemistry and Elemental Analysis
- Meteorological Phenomena and Simulations
- Geological and Geophysical Studies
- Atmospheric and Environmental Gas Dynamics
- Microbial Community Ecology and Physiology
- Methane Hydrates and Related Phenomena
- Isotope Analysis in Ecology
- Service-Oriented Architecture and Web Services
- Paleontology and Stratigraphy of Fossils
- Marine and Offshore Engineering Studies
- Scientific Computing and Data Management
- Geological and Geochemical Analysis
- Island Studies and Pacific Affairs
- Environmental Monitoring and Data Management
- Ocean Waves and Remote Sensing
- Maritime Navigation and Safety
- Geological Studies and Exploration
Institut de Recherche pour le Développement
2015-2023
Centre National de la Recherche Scientifique
2015-2023
Laboratoire d’Études en Géophysique et Océanographie Spatiales
2015-2023
Université de Toulouse
2015-2023
Université Toulouse III - Paul Sabatier
2015-2023
NOAA Atlantic Oceanographic and Meteorological Laboratories
2019-2023
Mercator Ocean (France)
2022-2023
Centre National d'Études Spatiales
2023
University of Miami
2019-2023
Université Grenoble Alpes
2019
This paper demonstrates the value of Observing System Evaluation (OS-Eval) efforts which have been made or are ongoing to contribute observing system review and design with support Ocean Data Assimilation Prediction (ODAP) communities such as GODAE OceanView CLIVAR-GSOP, by highlighting examples that illustrate potential related OS-Eval methodologies recent achievements. For instance, Experiment (OSE) studies impacts severe decrease in number TAO buoys during 2012-2014 TRITON since 2013 on...
Abstract Biological dinitrogen (N 2 ) fixation and the distribution of diazotrophic phylotypes were investigated during two cruises in Coral Sea Solomon (southwestern Pacific) austral winter conditions. N rates measurable at every station, but integrated (0–150 m) an order magnitude higher (30 to 5449 µmol m −2 d −1 compared those measured (2 109 ). Rates upper range (100–1000 or than compiled global MARine Ecosystem biomass DATa database, indicating that this region has some highest...
The semi-enclosed Solomon Sea in the southwestern tropical Pacific is on pathway of a major oceanic circuit connecting subtropics to equator via energetic western boundary currents. Waters transiting through this area replenish Warm Pool and ultimately feed equatorial current system, particular undercurrent. In addition dynamical transformations, water masses undergo nutrient micronutrient enrichment when coming contact with coasts, impacting productivity downstream region. Broadscale...
Abstract The Solomon Sea is a marginal sea in the western Pacific warm pool that contains South low latitude boundary currents. These currents chiefly exit through three channels (Vitiaz Strait, St. George's Channel, and Strait) serve as primary source water for Equatorial Undercurrent. Simulations have shown transport partitioning between straits determines mass structure of Undercurrent, but relative contributions each strait not been observed before. As part Southwest Ocean Circulation...
Abstract The semienclosed Solomon Sea is the final passage in equatorward transit of South Pacific western boundary currents (WBCs) that play a key role heat and mass budgets equatorial Pacific. WBCs their associated water properties are examined using data from two oceanographic cruises undertaken during contrasting trade wind seasons: July 2012 March 2014. mean circulation transports with uncertainties determined cruise unique configuration an inverse box model formulated based on measured...
Abstract A cross-validation algorithm is developed to perform probabilistic observing system simulation experiments (OSSEs). The use of a probability distribution “true” states considered rather than single “truth” using in which each member an ensemble alternatively used as the and simulate synthetic observation data that reflect be evaluated. other available members are produce updated by assimilating specific data, while evaluation impacts obtained comprehensive set verification skill...
Abstract. The gyre-scale, dynamic sea surface height (SSH) variability signifies the spatial redistribution of heat and freshwater in ocean, influencing ocean circulation, weather, climate, level, ecosystems. It is known that first empirical orthogonal function (EOF) mode interannual SSH North Atlantic exhibits a tripole gyre pattern, with subtropical varying out phase both subpolar tropics, influenced by low-frequency Oscillation. Here, we show EOF explains majority (60 %–90 %) variance...
Abstract The Solomon Sea is a marginal sea in the southwest Pacific that connects subtropical and equatorial circulation, constricting transport of South Subtropical Mode Water Antarctic Intermediate through its deep, narrow channels. Marginal topography inhibits internal waves from propagating out into open ocean, making these regions hot spots for energy dissipation mixing. Data two hydrographic cruises Argo profiles are employed to indirectly infer mixing observations first time Sea....
Over the past few decades, global mean sea level rise and superimposed regional fluctuations of have exerted considerable stress on coastal communities, especially in low-elevation regions such as Pacific Islands western South Ocean. This made it necessary to most comprehensive understanding forcing mechanisms that are responsible for increasing rates extreme events. In this study, we explore causes observed variability midlatitude interannual time scales using observations atmospheric...
AVISO (Archiving, Validation and Interpretation of Oceanographic Satellite data) is a service set up by the French spatial agency, CNES (Centre National d'Etudes Spatiales) to process, archive distribute data derived products from satellite missions. Its web portal AVISO+ (www.aviso.altimetry.fr) entry point freely access more than 40 CTOH (Center for Topographic studies Ocean Hydrosphere) not only ocean-oriented applications but also hydrology, coastal, biology sea ice applications. In...
Abstract. The gyre-scale, dynamic sea surface height (SSH) variability signifies the spatial redistribution of heat and freshwater in ocean, influencing ocean circulation, weather, climate, level, ecosystems. It is known that first empirical orthogonal function (EOF) mode interannual SSH North Atlantic exhibits a tripole gyre pattern, with subtropical varying out-of-phase both subpolar tropics, influenced by low-frequency Oscillation. Here, we show EOF explains majority (60–90 %) variance...
Significant progress has been made in the last decade on understanding of role Coral and Solomon Seas as major suppliers waters chemical elements to equatorial Pacific. Yet, location, depth, processes enrichment these remain poorly constrained. Neodymium (Nd) isotopic compositions ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="m1"><mml:mrow><mml:msub><mml:mi>ε</mml:mi><mml:mrow><mml:mi>N</mml:mi><mml:mi>d</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math> ) rare earth...
The Surface Water and Ocean Topography (SWOT) mission was launched in December 2022, followed by a three-month commissioning phase Calibration Validation (Cal/Val) before the SWOT spacecraft transitioned from 1-day to 21-day repeat orbit for science operations July 2023. Measurements over ocean surface low-rate (LR) data of KaRIn (short Ka-band Radar Interferometer) instrument provided striking 2D images various features at different spatial temporal scales. These include (but are not...
The gyre-scale, dynamic sea surface height (SSH) variability signifies the spatial redistribution of heat and freshwater in ocean, influencing ocean circulation, weather, climate, level, ecosystems. It is known that first empirical orthogonal function (EOF) mode interannual SSH North Atlantic exhibits a tripole gyre pattern, with subtropical varying out phase both subpolar tropics, influenced by low-frequency Oscillation. We show EOF explains majority (60 %&#8211;90 %) variance Labrador...
Over the past few decades, global mean sea level rise and superimposed regional fluctuations of have exerted considerable stress on coastal communities, especially in low-elevation regions such as Pacific Islands western South Ocean. This made it necessary to most comprehensive understanding forcing mechanisms that are responsible for increasing rates extreme events. In this study, we explore causes observed variability midlatitude interannual time scales using observations atmospheric...