A5035789653- Arctic and Antarctic ice dynamics
- Cryospheric studies and observations
- Climate change and permafrost
- Methane Hydrates and Related Phenomena
- Climate variability and models
- Atmospheric and Environmental Gas Dynamics
- Marine and coastal ecosystems
- Ocean Acidification Effects and Responses
- Oceanographic and Atmospheric Processes
- Geology and Paleoclimatology Research
- Geological Studies and Exploration
- Freezing and Crystallization Processes
- Atmospheric chemistry and aerosols
- Marine and environmental studies
- Winter Sports Injuries and Performance
- Isotope Analysis in Ecology
- Meteorological Phenomena and Simulations
- Global Energy and Sustainability Research
- Spacecraft and Cryogenic Technologies
- Indigenous Studies and Ecology
- Distributed and Parallel Computing Systems
- Geomagnetism and Paleomagnetism Studies
- Food Industry and Aquatic Biology
- Arctic and Russian Policy Studies
- Scientific Research and Discoveries
Sorbonne Université
2016-2025
Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques
2016-2025
Institut Pierre-Simon Laplace
2012-2025
Centre National de la Recherche Scientifique
2015-2024
Institut de Recherche pour le Développement
2015-2024
Institute of Arctic and Alpine Research
2024
University of Colorado Boulder
2024
Sorbonne University Abu Dhabi
2024
Structure et Instabilité des Génomes
2022-2023
UCLouvain
2006-2022
Abstract This study presents the global climate model IPSL‐CM6A‐LR developed at Institut Pierre‐Simon Laplace (IPSL) to natural variability and response anthropogenic forcings as part of sixth phase Coupled Model Intercomparison Project (CMIP6). article describes different components, their coupling, simulated in comparison previous versions. We focus here on representation physical along with main characteristics carbon cycle. The model's climatology, assessed from a range metrics (related...
Abstract We examine CMIP6 simulations of Arctic sea‐ice area and volume. find that models produce a wide spread mean area, capturing the observational estimate within multimodel ensemble spread. The provides more realistic sensitivity September to given amount anthropogenic CO 2 emissions global warming, compared with earlier CMIP experiments. Still, most fail simulate at same time plausible evolution surface temperature. In vast majority available simulations, Ocean becomes practically free...
Royal Netherlands Meteorological Institute, De Bilt, The NetherlandsMet Éireann, Dublin, IrelandEuropean Centre for Medium-Range Weather Forecasts, Reading, United KingdomDanish Copenhagen, DenmarkSwedish and Hydrological Norrköping, SwedenLisbon University, Lisbon, PortugalBarcelona Supercomputing Centre, Barcelona, SpainMétéo-France, Toulouse, FranceUniversity College IrelandStockholm Stockholm, SwedenBarcelona Spain, University of Murcia, SpainUniversity Oxford, KingdomSpanish Agency...
The Earth system model EC-Earth3 for contributions to CMIP6 is documented here, with its flexible coupling framework, major configurations, a methodology ensuring the simulations are comparable across different high-performance computing (HPC) systems, and physical performance of base configurations over historical period. variety possible sub-models reflects broad interests in EC-Earth community. key metrics demonstrate behavior biases well within frame known from recent CMIP models. With...
Abstract. The new 3.6 version of the Louvain-la-Neuve sea ice model (LIM) is presented, as integrated in most recent stable release Nucleus for European Modelling Ocean (NEMO) (3.6). will be used next Climate Model Inter-comparison Project (CMIP6). Developments focussed around three axes: improvements robustness, versatility and sophistication code, which involved numerous changes. Robustness was improved by enforcing exact conservation through inspection different processes driving...
Abstract. The Earth System Model EC-Earth3 for contributions to CMIP6 is documented here, with its flexible coupling framework, major model configurations, a methodology ensuring the simulations are comparable across different HPC systems, and physical performance of base configurations over historical period. variety possible sub-models reflects broad interests in EC-Earth community. key metrics demonstrate behaviour biases well within frame known from recent CMIP models. With improved...
Net Arctic Ocean primary production (PP) is expected to increase over this century, due less perennial sea ice and more available light, but could decrease depending on changes in nitrate (NO 3 ) supply. Here Coupled Model Intercomparison Project Phase 5 simulations performed with 11 Earth System Models are analyzed terms of PP, surface NO , coverage 1900–2100. Whereas the mean model simulates reasonably well Arctic‐integrated PP (511 TgC/yr, 1998–2005) projects a mild 58 TgC/yr by 2080–2099...
Sea ice ecosystems are characterized by microalgae living in brine inclusions. The growth rate of algae depends on light and nutrient supply. Here, the interactions between nutrients dynamics under influence investigated using a one‐dimensional model. model includes snow thermodynamics with physics an idealized sea biological component, one nutrient, namely, dissolved silica (DSi). In model, DSi follows motion is consumed algae. Depending physical characteristics, flow either advective,...
Abstract. An upgraded version of the biogeochemical model SWAMCO is coupled to ocean-sea-ice NEMO-LIM explore processes governing spatial distribution iron supply phytoplankton in Southern Ocean. The 3-D NEMO-LIM-SWAMCO implemented ocean domain south latitude 30° S and runs are performed over September 1989–December 2000. Model scenarios include potential sources (atmospheric deposition, iceberg calving/melting continental sediments) as well storage within sea ice, all formulated based on a...
Abstract The discovery that melting sea ice can fertilize iron (Fe)-depleted polar waters has recently fostered trace metal research efforts in ice. aim of this review is to summarize and synthesize the current understanding Fe biogeochemistry To do so, we compiled available data on particulate, dissolved, total dissolvable (PFe, DFe TDFe, respectively) from sea-ice studies both regions sub-Arctic northern Hemisphere temperate areas. Data analysis focused a circum-Antarctic dataset derived...
Sea ice core chlorophyll a data are used to describe the seasonal, regional and vertical distribution of algal biomass in Southern Ocean pack ice. The Antarctic Ice Processes Climate – Biology (ASPeCt Bio) circumpolar dataset consists 1300 cores collected during 32 cruises over period 25 years. analyses show that integrated sea peaks early spring late austral summer, which is consistent with theories on light nutrient limitation. results indicate circum‐Antarctic scale, surface, internal...
Abstract. A better understanding of the role sea ice for changing climate our planet is central aim diagnostic Coupled Model Intercomparison Project 6 (CMIP6)-endorsed Sea-Ice (SIMIP). To reach this aim, SIMIP requests sea-ice-related variables from climate-model simulations that allow a and, ultimately, improvement biases and errors in sea-ice with large-scale models. This then allows us to understand what degree CMIP6 model relate reality, thus improving confidence answering questions...
Abstract Over the past two decades, with recognition that ocean’s sea-ice cover is neither insensitive to climate change nor a barrier light and matter, research in biogeochemistry has accelerated significantly, bringing together multi-disciplinary community from variety of fields. This disciplinary diversity contributed wide range methodological techniques approaches studies, complicating comparisons results development conceptual numerical models describe important biogeochemical processes...
Abstract We report first direct measurements of the partial pressure CO 2 (pCO ) within Antarctic pack sea ice brines and related fluxes across air‐ice interface. From late winter to summer, encased in change from a large oversaturation, relative atmosphere, marked undersaturation while underlying oceanic waters remains slightly oversaturated. The decrease summer pCO is driven by dilution with melting ice, dissolution carbonate crystals, net primary production. As warms, its permeability...
Abstract. We compare the mass budget of Arctic sea ice for 15 models submitted to latest Coupled Model Intercomparison Project (CMIP6), using new diagnostics that have not been available previous model inter-comparisons. These allow us look beyond standard metrics cover and thickness processes growth loss in climate a more detailed way than has previously possible. For 1960–1989 multi-model mean, dominant causing annual are basal frazil formation, which both occur during winter. The main by...
Abstract. Earth system models (ESMs) are key tools for providing climate projections under different scenarios of human-induced forcing. ESMs include a large number additional processes and feedbacks such as biogeochemical cycles that traditional physical do not consider. Yet, some cloud dynamics ecosystem functional response still have fairly high uncertainties. In this article, we present an overview components currently included in state-of-the-art discuss the challenges to evaluate...
Simulations performed with general circulation models and a model of intermediate complexity show that the variability September sea ice extent in Arctic 21st century increases first when mean decreases from present‐day values. A maximum variance is found around 3 million km 2 . For lower extents, declines extent. The behavior clearly different Antarctica where always as decreases, following roughly square‐root law compatible very simple geometric arguments. Several mechanisms are...