A5009626167- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Vehicle emissions and performance
- Air Quality Monitoring and Forecasting
- Atmospheric and Environmental Gas Dynamics
- Maritime Transport Emissions and Efficiency
- Atmospheric Ozone and Climate
- Climate Change and Health Impacts
- Atmospheric aerosols and clouds
- Cryospheric studies and observations
- Plant responses to elevated CO2
- Geology and Paleoclimatology Research
- Ocean Acidification Effects and Responses
- Marine and coastal ecosystems
- Meteorological Phenomena and Simulations
- Aeolian processes and effects
- Wind and Air Flow Studies
- Pesticide and Herbicide Environmental Studies
- Maritime Navigation and Safety
- Environmental Policies and Emissions
- Marine Bivalve and Aquaculture Studies
- Maritime Ports and Logistics
- Weed Control and Herbicide Applications
- Plant Ecology and Soil Science
- Process Optimization and Integration
Observatoire de la Côte d’Azur
2022
ARPE PACA
2012-2020
Atmel (France)
2020
Centre Provence-Alpes-Côte d'Azur
2010-2014
Université Joseph Fourier
1996-1999
Laboratoire de Glaciologie et Géophysique de l’Environnement
1994-1999
Centre National de la Recherche Scientifique
1994-1996
Goddard Institute for Space Studies
1995
In the context of advection trace species by 3D atmospheric flows, a comparative test hierarchy finite volume transport schemes initially derived B. Van Leer is presented. Those are conservative construction and proposed simple way ensuring monotonicity. One schemes, introduced independently in community M. J. Prather, now considered as reference GCM community. An important aspect present work to perform simulations with various spatial resolutions order compare at comparable numerical cost....
Abstract. Marseille, the most important port of Mediterranean Sea, represents a challenging case study for source apportionment exercises, combining an active photochemistry and multiple emission sources, including fugitive emissions from industrial sources shipping. This paper presents Chemical Mass Balance (CMB) approach based on organic markers metals to apportion primary aerosol in with special focus emissions. Overall, CMB model accounts major anthropogenic motor vehicles, biomass...
Abstract. A comprehensive aerosol characterization was conducted at Marseille during summer, including organic (OC) and elemental carbon (EC), major ionic species, radiocarbon (14C), water soluble OC HULIS (HUmic LIke Substances), composition primary secondary markers. This paper is the second of a two-part series investigating sources aerosol. While first investigates Organic Aerosol (OA) (El Haddad et al., 2010), this focused on fraction OA. In context overall mass balance, (POC)...
Since 2014, a 100 m tall tower measures continuously greenhouse gases at the Observatoire de haute Provence (OHP) located in southeast of France (43° 55′ 51″ N, 5° 42′ 48″ E) as monitoring station French National Greenhouse Gases Observation network (ICOS-Fr). This rural allows to study short, mid, and long terms variability atmospheric CO2, CH4 CO concentrations continental, regional local scales region characterized by Mediterranean climate. Measurements are performed using cavity...
Maritime activities contribute to air pollution in coastal areas and port cities. In Marseille, France's second largest city, the maritime sector is main contributor NOx emissions (53%), ahead of road transport (31%) [1]. This poorly regulated, its vary according commercial tourist demands, with no downward trend.Recently, numerous projects have highlighted contribution plumes local quality. Within these plumes, observations shown that ultrafine particle concentrations can exceed 700,000...
The uplift, transport and deposition of dust have been implemented in the LMDz AGCM. Simulations atmospheric performed under present day (PD) Last Glacial Maximum (LGM) conditions. For PD climate large‐scale as inferred from measurements is reproduced. Increased amounts are simulated almost everywhere for LGM climate, concentration Antarctic ice increased cores. model simulates substantially concentrations Greenland ice, however they still lower than values reported
Radon 222 ( Rn) is used as a tracer to probe and intercompare transport, turbulent mixing, convective mixing in the Laboratoire de Météorologie Dynamique (LMD) Goddard Institute for Space Studies (GISS) atmospheric general circulation models (GCMs). Formulations transport their control on global distribution time variability of Rn, well parameterizations continental surface source flux, are directly implemented into two GCMs run “in‐line.” Tracer formulations largely inspired by climate...
A simple Rayleigh‐type isotope model, typical of those used to develop algorithms for extracting climatic information from stable water paleodata, is evaluated against the more complex and presumably reliable calculations a general circulation model (GCM) fitted with tracer diagnostics. The evaluation centers on an analysis how temperature T e oceanic moisture source affects deuterium excess d Greenland precipitation. annual ‐ relationship derived GCM diagnostics largely reproduced by when...
Abstract. Biogenic volatile organic compounds (BVOCs) emitted by plants represent a large source of carbon released into the atmosphere, where they account for precursors tropospheric ozone and secondary aerosols. Being directly involved in air pollution indirectly climate change, understanding what factors drive BVOC emissions is prerequisite modeling their predict pollution. The main algorithms currently used to model are mainly light and/or temperature dependent. Additional such as...
Abstract. Due to its adverse effects on human health, atmospheric particulate matter (PM) constitutes a growing challenge for air quality management. It is also complex subject of study. The understanding evolution indeed made difficult by the wide number sources and numerous processes that govern in troposphere. As consequence, representation chemistry-transport models needs be permanently evaluated enhanced order refine our comprehension PM pollution events propose consistent environmental...
This study presents the first analysis of variability atmospheric CO2 in area Marseille city (France). It addresses role anthropogenic emissions, natural fluxes and boundary layer height (ABLH) dynamics on at diurnal, synoptic, seasonal multi-annual scales. A regional network based 4 in-situ observation sites CO2, CO NOx was deployed between 2013 2018. One urban site (CAV) located center set up collaboration with air quality monitoring agency ATMOSUD. second (SME) installed coastal edge...
A module to simulate the volatilization of pesticides from soils and plants was implemented in air quality model CHIMERE order spatiotemporal distribution pesticide atmospheric concentrations. Pesticide applications are spatially distributed according quantities sold per municipality France (recorded French BNVD-S database) temporally application periods determined with enquiries. The applied S-metolachlor folpet. In first stage study, emissions simulated by Volt'Air models compared. second...