A5075510225- Cryospheric studies and observations
- Arctic and Antarctic ice dynamics
- Climate variability and models
- Graphite, nuclear technology, radiation studies
- Radioactive contamination and transfer
- Nuclear and radioactivity studies
- Meteorological Phenomena and Simulations
- Geology and Paleoclimatology Research
- Oceanographic and Atmospheric Processes
- Nuclear Physics and Applications
- Ocean Waves and Remote Sensing
- Nuclear reactor physics and engineering
- Atmospheric and Environmental Gas Dynamics
- Climate change and permafrost
- Winter Sports Injuries and Performance
- Methane Hydrates and Related Phenomena
- Nuclear Materials and Properties
- Radioactivity and Radon Measurements
- Hydrocarbon exploration and reservoir analysis
- Geological Modeling and Analysis
- Risk and Safety Analysis
- Ionosphere and magnetosphere dynamics
- Tropical and Extratropical Cyclones Research
- Nuclear Engineering Thermal-Hydraulics
- Planetary Science and Exploration
European Centre for Medium-Range Weather Forecasts
2022-2024
UCLouvain
2020-2022
Weatherford College
2021
NOAA Oceanic and Atmospheric Research
2016-2021
Institut polytechnique de Grenoble
2020
Laboratoire Jean Kuntzmann
2018-2020
Centre Inria de l'Université Grenoble Alpes
2020
Université Grenoble Alpes
2020
Centre National de la Recherche Scientifique
2020
Université Savoie Mont Blanc
2016
Abstract The Southern Hemisphere cryosphere has recently shown regionally-contrasted responses to climate change, in particular the positive phases of Annular Mode. However, understanding impacts this mode on ice-shelf basal melt at a circum-Antarctic scale is still limited. Here, we performed idealized experiments with pan-Antarctic regional cavity-resolving ocean—sea-ice model for different We show that lead increased upwelling and subsurface ocean temperature salinity close ice shelves,...
Abstract. We introduce PARASO, a novel five-component fully coupled regional climate model over an Antarctic circumpolar domain covering the full Southern Ocean. The state-of-the-art models used are fast Elementary Thermomechanical Ice Sheet (f.ETISh) v1.7 (ice sheet), Nucleus for European Modelling of Ocean (NEMO) v3.6 (ocean), Louvain-la-Neuve sea-ice (LIM) (sea ice), COnsortium Small-scale MOdeling (COSMO) v5.0 (atmosphere) and its CLimate Mode (CLM) v4.5 (land), which here run at...
Abstract. The seasonal cycle of the Antarctic sea ice extent is strongly asymmetric, with a relatively slow increase after summer minimum followed by more rapid decrease winter maximum. This intimately linked to insolation received at top atmosphere, but processes as well exchanges atmosphere and ocean may also play role. To quantify these contributions, series idealized sensitivity experiments have been performed an eddy-permitting (1/4∘) NEMO-LIM3 (Nucleus for European Modelling...
Abstract. Societal adaptation to rising sea levels requires robust projections of the Antarctic Ice Sheet’s retreat, particularly due ocean-driven basal melting its fringing ice shelves. Recent advances in ocean models that simulate ice-shelf offer an opportunity reduce uncertainties ice–ocean interactions. Here, we compare several community-contributed, circum-Antarctic simulations highlight inter-model differences, evaluate agreement with satellite-derived melt rates, and examine...
Ocean and sea-ice reanalyses are reconstructions of historical ocean states generated by ingesting observations into simulated model through data assimilation methods. The ReAnalysis System-6 (ORAS6) is the 6th generation ECMWF reanalysis system. ORAS6 forced hourly ERA5 atmospheric fields uses an ensemble variational (EDA) together with latest reprocessed input datasets to produce a state-of-the-art 11-member reanalyses. from will be used as initial conditions for both upcoming...
The Climate Adaptation Digital Twin within the Destination Earth project represents an innovative initiative aimed at achieving operational kilometer-scale global climate simulations to support adaptation efforts. Three state-of-the-art System Models (ESMs) are used separately and we focusing on scientific advancements simulation results of IFS-NEMO model throughout project's duration.During first phase project, two main were produced: a historical experiment (1990–2019) 10 km...
We coupled together high-resolution versions of the ocean–sea ice model NEMO and sheet BISICLES configured to Totten Glacier area ran a series simulations over recent past (1995–2014) under warming conditions (2081–2100; SSP4-4.5) with in stand-alone mode assess effects coupling. During past, ocean–ice coupling has increased time-averaged value basal melt rate both Moscow University shelf cavities by 6.7% 14.2%, respectively. The relationship between changes thickness suggests that effect is...
The behavior of the fallout radionuclides 137Cs, 54Mn, 144Ce-Pr and 90Sr in milk-food chain was studied at a commercial dairy farm near Tecumseh, Michigan during 1964 1965. main purpose study to develop mathematical models describe movement from air milk. Three are presented: first predicts total deposition on precipitation collectors given concentration rainfall rate; second forage concentration, rate, rates which grows is consumed by herd; third milk each type feed rate herd. two...
State‐of‐the‐art climate models rely on bulk formulae arising from the Monin–Obukhov semi‐empirical theory to estimate turbulent air–sea fluxes. The mathematical structure of those implies several difficulties when trying study numerical properties coupling algorithms used for practical applications. This article introduces a methodology building physically realistic approximations existing which would also satisfy suitable (explicit character, regularity, differentiability). is achieved by...
Abstract Standard methods for determining air–sea fluxes typically rely on bulk algorithms set in the frame of Monin–Obukhov similarity theory (MOST), using ocean surface fields and atmosphere near‐surface fields. In context coupled ocean–atmosphere simulations, shallowest vertical level is usually used as input and, by default, turbulent closure one‐sided: it extrapolates solution profiles (for wind speed, temperature, humidity) to prescribed values. Using ones equivalent considering that,...
Portions of an adult human lung were studied by autoradiography in order to detect the presence fallout particles. The radioactivity remainder tissue was determined with a gamma-ray spectrometer. Four particles found and their activities determined. From measurement for total-fission-product activity it calculated that there approximately 264 right at time death.
Standard methods for determining air – sea fluxes typically rely on bulk algorithms set in the frame of Monin-Obukhov stability theory (MOST), using ocean surface fields and atmosphere near-surface fields. In context coupled simulations, shallowest vertical level is usually used as input by default, turbulent closure one-sided: it extrapolates solution profiles (for wind speed, temperature humidity) to prescribed values. Using ones equivalent considering that layer, are constant instead also...
<p>How well is the Antarctic climate over last decades represented in models and how predictable its future evolution? These questions delve into specificities of climate, a system characterized by large natural fluctuations complex interactions between ice sheet, ocean, sea atmosphere. The PARAMOUR project aims at improving our understanding key processes which control variability predictability decadal timescale. In this context, we introduce PARASO, novel fully-coupled...