A5090864732- Oceanographic and Atmospheric Processes
- Marine and coastal ecosystems
- Climate variability and models
- Atmospheric and Environmental Gas Dynamics
- Ocean Acidification Effects and Responses
- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Arctic and Antarctic ice dynamics
- Meteorological Phenomena and Simulations
- Marine and fisheries research
- Medical Imaging Techniques and Applications
- Marine Biology and Ecology Research
- Tropical and Extratropical Cyclones Research
- Geomagnetism and Paleomagnetism Studies
- Geological and Geophysical Studies
- Ocean Waves and Remote Sensing
- Cryospheric studies and observations
- Marine Bivalve and Aquaculture Studies
- Geophysics and Gravity Measurements
- Atomic and Subatomic Physics Research
- Magnetic confinement fusion research
- Atmospheric chemistry and aerosols
- Paleontology and Stratigraphy of Fossils
- Particle Detector Development and Performance
- Advanced MRI Techniques and Applications
Centre National de la Recherche Scientifique
2007-2024
Sorbonne Université
2004-2024
Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques
2012-2024
Institut Pierre-Simon Laplace
2015-2024
Laboratoire des Sciences du Climat et de l'Environnement
2007-2024
Université de Versailles Saint-Quentin-en-Yvelines
2007-2024
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2007-2024
CEA Paris-Saclay
2007-2024
Université Paris-Saclay
2013-2024
Institut de Recherche pour le Développement
2012-2023
We present the global general circulation model IPSL-CM5 developed to study long-term response of climate system natural and anthropogenic forcings as part 5th Phase Coupled Model Intercomparison Project (CMIP5). This includes an interactive carbon cycle, a representation tropospheric stratospheric chemistry, comprehensive aerosols. As it represents principal dynamical, physical, bio-geochemical processes relevant system, may be referred Earth System Model. However, used in multitude...
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 This paper describes the main characteristics of CNRM‐CM6‐1, fully coupled atmosphere‐ocean general circulation model sixth generation jointly developed by Centre National de Recherches Météorologiques (CNRM) and Cerfacs for phase Coupled Model Intercomparison Project 6 (CMIP6). The provides a description each component including coupling method new online output software. We emphasize where model's components have been updated with respect to former version, CNRM‐CM5.1. In...
Abstract This study introduces CNRM‐ESM2‐1, the Earth system (ES) model of second generation developed by CNRM‐CERFACS for sixth phase Coupled Model Intercomparison Project (CMIP6). CNRM‐ESM2‐1 offers a higher complexity than Atmosphere‐Ocean General Circulation CNRM‐CM6‐1 adding interactive ES components such as carbon cycle, aerosols, and atmospheric chemistry. As both models share same code, physical parameterizations, grid resolution, they offer fully traceable framework to investigate...
Abstract. PISCES-v2 (Pelagic Interactions Scheme for Carbon and Ecosystem Studies volume 2) is a biogeochemical model which simulates the lower trophic levels of marine ecosystems (phytoplankton, microzooplankton mesozooplankton) cycles carbon main nutrients (P, N, Fe, Si). The intended to be used both regional global configurations at high or low spatial resolutions as well short-term (seasonal, interannual) long-term (climate change, paleoceanography) analyses. There are 24 prognostic...
Abstract The implementation of boundary conditions is a key aspect climate simulations. We describe here how the Climate Model Intercomparison Project Phase 6 (CMIP6) forcing data sets have been processed and implemented in Version Institut Pierre‐Simon Laplace (IPSL) model (IPSL‐CM6A‐LR) as used for CMIP6. Details peculiar to some Projects are also described. IPSL‐CM6A‐LR run without interactive chemistry; thus, tropospheric stratospheric aerosols well ozone be prescribed. improved aerosol...
We have assessed the ability of a common ocean biogeochemical model, PISCES, to match relevant modern data fields across range circulation from three distinct Earth system models: IPSL-CM4-LOOP, IPSL-CM5A-LR and CNRM-CM5.1. The first these models has contributed IPCC 4th assessment report, while latter two are contributing ongoing 5th report. These differ with respect their atmospheric component, subgrid-scale physics resolution. simulated vertical distribution tracers suffer biases in poor...
Although they are key components of the surface ocean carbon budget, physical processes inducing fluxes across mixed‐layer base, i.e., subduction and obduction, have received much less attention than biological processes. Using a global model analysis preindustrial ocean, quantified compared to other in out mixed layer, air‐sea CO 2 gas exchange sedimentation biogenic material. Model‐based obduction evaluated against independent data‐based estimates extent that was possible. We find...
Abstract In order to explore the effects of mesoscale eddies on marine biogeochemistry over climate timescales, global ocean biogeochemical general circulation models (OBGCMs) need at least be run a horizontal resolution 0.25°, minimal admitting eddies. However, their use is currently limited because prohibitive computational cost and storage requirements. To overcome this problem, an online coarsening algorithm evaluated in oceanic component (NEMO‐GELATO‐PISCES) CNRM‐ESM2‐1. This allows...
Abstract. Anthropogenic changes in atmosphere–ocean and atmosphere–land CO2 fluxes have been quantified extensively, but few studies addressed the connection between land ocean. In this transition zone, coastal ocean, spatial temporal data coverage is inadequate to assess its global budget. Thus we use a ocean biogeochemical model ocean's inventory of anthropogenic variability. We used an intermediate resolution, eddying version NEMO-PISCES (ORCA05), varying from 20 50 km horizontally, i.e....
Abstract. PISCES-v2 is a biogeochemical model which simulates the lower trophic levels of marine ecosystem (phytoplankton, microzooplankton and mesozooplankton) cycles carbon main nutrients (P, N, Fe, Si). The intended to be used for both regional global configurations at high or low spatial resolutions as well short-term (seasonal, interannual) long-term (climate change, paleoceanography) analyses. There are twenty-four prognostic variables (tracers) including two phytoplankton compartments...
Abstract. Based on the fifth phase of Coupled Model Intercomparison Project (CMIP5)-generation previous Institut Pierre Simon Laplace (IPSL) Earth system model, we designed a new version, IPSL-CM5A2, aiming at running multi-millennial simulations typical deep-time paleoclimate studies. Three priorities were followed during setup model: (1) improving overall model computing performance, (2) overcoming persistent cold bias depicted in generation and (3) making able to handle specific...
Abstract In the Arabian Sea (AS), spatiotemporal nutrient limitation patterns of primary production and possible role inputs from atmosphere are still not well understood. Using a biogeochemical model forced by modeled aerosol deposition, we show that without high atmospheric iron through dust deposition during summer monsoon, over AS would be reduced half. Atmospheric also supports most nitrogen fixation AS. However, our ocean biogeochemistry modeling results suggest dinitrogen constitutes...
Abstract. The impact of anthropogenic climate change on marine net primary production (NPP) is a reason for concern because changing NPP will have widespread consequences ecosystems and their associated services. Projections by the current generation Earth system models suggested decreases in global response to future change, albeit with very large uncertainties. Here, we make use two versions Institut Pierre-Simon Laplace Climate Model (IPSL-CM) that simulate divergent responses similar...
Abstract. This model study addresses the change in pelagic calcium carbonate production (CaCO3, as calcite model) and dissolution response to rising atmospheric CO2. The parameterization of CaCO3 includes a dependency on saturation state seawater with respect calcite. It was derived from laboratory mesocosm studies particulate organic inorganic carbon Emiliania huxleyi function pCO2. predicts values line recent estimates. effect pCO2 quantified by means simulations forced CO2 increasing at...
Temperature inversions are known to occur in the near‐surface ocean regime where salinity stratification is large enough influence density field. However, they have not been as features that alter processes significantly sea surface temperature (SST). From analysis of new observed datasets well state‐of‐the‐art numerical model outputs, this paper shows heat trapped within a inversion makes significant contribution warming SST South‐Eastern Arabian Sea during pre‐southwest monsoon season.
Abstract A global ocean general circulation model (OGCM) is used to investigate the mixed layer heat budget of northern Indian Ocean (NIO). The validated against observations and shows fairly good agreement with depth data in NIO. NIO has been separated into three subbasins: western Arabian Sea (AS), eastern AS, Bay Bengal (BoB). This study reveals strong differences between AS budget, while latter basin similarities BoB. Interesting new results on seasonal time scales are shown. penetration...
Abstract. The marine biological carbon pump is dominated by the vertical transfer of particulate organic (POC) from surface ocean to its interior. efficiency this plays an important role in controlling amount atmospheric that sequestered ocean. Furthermore, abundance and composition POC critical for removal numerous trace elements scavenging, a number which, such as iron, are essential growth organisms, including phytoplankton. Observations laboratory experiments have shown composed...
Abstract In this paper, we explore the global responses of surface temperature, chlorophyll, and primary production to tropical cyclones (TCs). Those ocean are first characterized from statistical analysis satellite data under ~1000 TCs over 1998–2007 period. Besides cold wake, vast majority induce a weak chlorophyll response, with only ~10% induced blooms exceeding 0.1 mg m −3 . The largest mostly occur within coastal regions, in contrast strongest wakes that generally farther offshore. To...
Abstract. The seasonal upwelling along the west coast of India (WCI) brings nutrient-rich, oxygen-poor subsurface waters to continental shelf, favoring very low oxygen concentrations in surface during late boreal summer and fall. This yearly-recurring coastal hypoxia is more severe some years, leading anoxia that has strong impacts on living resources. In present study, we analyze a 1/4° resolution coupled physical–biogeochemical regional oceanic simulation over 1960–2012 period investigate...
The Arctic Ocean, more than any other ocean, is influenced by riverine input of carbon and nutrients. That delivery likely to change with climate as runoff increases, permafrost thaws, tree lines advance. But it unknown what extent these changes in will affect Ocean primary production, air‐to‐sea CO 2 fluxes, acidification. To test their sensitivity changing delivery, we made tests using an ocean circulation model coupled biogeochemical model. In separate idealized simulations, inputs...