A5022545786- Air Quality and Health Impacts
- Air Quality Monitoring and Forecasting
- COVID-19 impact on air quality
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Vehicle emissions and performance
- Atmospheric Ozone and Climate
- Climate Change Policy and Economics
- Atmospheric aerosols and clouds
- Energy and Environment Impacts
- Global Energy Security and Policy
- Environmental Policies and Emissions
- Impact of Light on Environment and Health
- Oil, Gas, and Environmental Issues
- Global Energy and Sustainability Research
- Earthquake Detection and Analysis
Centre National de la Recherche Scientifique
2010-2024
Université de Toulouse
2019-2024
Centre de Gestion Scientifique
2024
Université Toulouse III - Paul Sabatier
2020-2023
Laboratoire d'Aérologie
2017-2023
Observatoire Midi-Pyrénées
2010-2021
Centre National de Recherches Météorologiques
2018-2019
Météo-France
2019
Sorbonne Université
2017
Institut Pierre-Simon Laplace
2017
Abstract We use the global Community Earth System Model to investigate response of secondary pollutants (ozone O 3 , organic aerosols SOA) in different parts world modified emissions primary during COVID‐19 pandemic. quantify respective effects reductions NOx and volatile carbon (VOC) emissions, which, most cases, affect oxidants opposite ways. Using model simulations, we show that level has been reduced by typically 40% China February 2020 similar amounts many areas Europe North America...
Abstract. In order to fight the spread of global COVID-19 pandemic, most world's countries have taken control measures such as lockdowns during a few weeks months. These had significant impacts on economic and personal activities in many countries. Several studies using satellite surface observations reported important changes spatial temporal distributions atmospheric pollutants greenhouse gases. Global regional chemistry-transport model are being performed analyze impact these distribution...
Abstract. Anthropogenic emissions are the result of many different economic sectors, including transportation, power generation, industrial, residential and commercial activities, waste treatment agricultural practices. Air quality models used to forecast atmospheric composition, analyze observations reconstruct chemical composition atmosphere during previous decades. In order drive these models, gridded all compounds need be provided. This paper describes a new global inventory called...
Abstract. We report on an evaluation of tropospheric ozone and its precursor gases in three atmospheric chemistry versions as implemented the European Centre for Medium-Range Weather Forecasts (ECMWF) Integrated Forecasting System (IFS), referred to IFS(CB05BASCOE), IFS(MOZART) IFS(MOCAGE). While model were forced with same overall meteorology, emissions, transport deposition schemes, they vary largely their parameterisations describing chemistry, including organics degradation,...
Abstract Using the CAM‐chem Model, we simulate response of chemical species in free troposphere to scenarios primary pollutant emission reductions during COVID‐19 pandemic. Zonally averaged ozone Northern Hemisphere spring and summer is found be 5%–15% lower than 19‐yr climatological values, good agreement with observations. About one third this anomaly attributed reduction scenario air traffic pandemic, another surface emissions, remainder 2020 meteorological conditions, including...
Abstract. Anthropogenic emissions are the result of many different activities, related to transportation, power generation, industrial, residential and commercial waste treatment agriculture practices. Air quality models used forecast atmospheric composition, analyse observations reconstruct chemical composition atmosphere during previous decades. In order drive these models, gridded all compounds emitted at surface need be provided. This paper describes a new global inventory called...
Abstract. The EURODELTA-Trends multi-model chemistry-transport experiment has been designed to facilitate a better understanding of the evolution air pollution and its drivers for period 1990–2010 in Europe. main objective is assess efficiency pollutant emissions mitigation measures improving regional-scale quality. present paper formulates scientific questions policy issues being addressed by modelling with an emphasis on how design technical features answer these questions. three tiers,...
Abstract Model intercomparison studies often report a large spread in simulation results, but quantifying the causes of these differences is hindered by fact that several processes contribute to model simultaneously. Here we use Multi‐Scale Infrastructure for Chemistry and Aerosols (MUSICA) version 0 investigate resolution dependencies simulated chemical species, with focus on between global uniform grid regional refinement simulations same modeling framework. We construct two (ne30 [∼112...
Abstract. There are very few African regional inventories providing biofuel and fossil fuel emissions. Within the framework of DACCIWA project, we have developed an anthropogenic emission inventory including main polluting sources (wood charcoal burning, making, trucks, cars, buses two-wheeled vehicles, open waste flaring). To this end, a database on consumption factors specific to Africa was established using most recent measurements. New spatial proxies (road network, power plant...
Several global and regional inventories have been developed in recent years, but none of them provide information on the uncertainties emissions. As part CAMS EvOlution project (CAMEO), we a tool to evaluate emissions from transportation different countries around world. This tool, Copernicus Online Computation Anthropogenic Emission Uncertainties (COCAU), is web-based platform for exploring greenhouse gas (GHG) their uncertainties, with focus sector. Built modern online technologies, COCAU...
Different emissions inventories have been developed in recent years, which provide of gaseous and particulate atmospheric species for the past decades at both global regional scales. As part Copernicus Atmosphere Monitoring Service, we CAMS-GLOB-ANT inventory (version 6.2), provides monthly 36 chemical compounds a spatial resolution 0.1x0.1 degree. The evaluation has revealed issues some regions, particularly nitrogen oxides sulfur dioxide. To evaluate dataset more detail, gathered data...
Emissions from power plants contribute significantly to the overall greenhouse gas and air pollutant levels. Satellite observations of compounds such as NO2 CO can help improve CO2 emission estimates, proposed in CORSO (CO2 Monitoring Verification Support Research on Supplementary Observations) project. One key objectives is global local capabilities using co-emitted species (NO2 CO) better estimate anthropogenic emissions. In this presentation, we will discuss a methodology developed detect...
China was the first country to undergo large-scale lockdowns in response pandemic early 2020 and a progressive return normalization after April 2020. Spaceborne observations of atmospheric nitrogen dioxide (NO2) oxygenated volatile organic compounds (OVOCs), including formaldehyde (HCHO), glyoxal (CHOCHO), peroxyacetyl nitrate (PAN), reveal important changes over 2020, relative 2019, pandemic-induced shutdown subsequent drop pollutant emissions. In February, at peak shutdown, observed...
Following population growth and rapid urbanization, West African cities have become major sources of anthropogenic pollution. Additionally, Saharan dust has had a significant impact, representing potentially toxic mix for the population. This study characterizes atmospheric composition its in two capitals, Bamako, Mali Dakar, Senegal. TSP, PM10 PM2.5 samples were collected during dry season 2009 when pollution levels high: chemical analysis included organic carbon (OC), elemental (EC), ions,...
Abstract. The 2020 COVID-19 crisis caused an unprecedented drop in anthropogenic emissions of air pollutants and greenhouse gases. Given that estimates from official national inventories for the year were not reported until 2 years later, new non-traditional datasets to estimate near-real-time became particularly relevant widely used international monitoring modelling activities during pandemic. This study investigates impact pandemic on European (the 27 EU member states UK) by comparing a...
Abstract. In order to fight the spread of global COVID-19 pandemic, most world countries have taken control measures such as lockdowns during a few weeks months. These had significant impacts on economic and personal activities in many countries. Several studies using satellite surface observations reported important changes spatial temporal distributions atmospheric pollutants greenhouse gases. Global regional chemistry-transport model are being performed analyze impact these distribution...
Abstract. There are very few African regional inventories providing biofuel and fossil fuel emissions. Within the framework of DACCIWA project, we have developed an anthropogenic emission inventory including main polluting sources (wood charcoal burning, making, truck, car, buses two wheels vehicles, open waste burning flaring). To this end, a database on consumption factors specific to Africa was established, using most recent measurements. New spatial proxies (road network, power plant...
We use the global Community Earth System Model to investigate response of secondary pollutants (ozone O3, organic aerosols SOA) in different parts world modified emissions primary during COVID-19 pandemic. quantify respective effects reductions NOx and VOC emissions, which, most cases, affect oxidants opposite ways. Using model simulations, we show that level has been reduced by typically 40 % China February 2020 similar amounts many areas Europe North America mid-March mid-April 2020, good...
Abstract. The 2020 COVID-19 crisis caused an unprecedented drop in anthropogenic emissions of air pollutants and greenhouse gases. Given that estimates from official national inventories for the year were not reported until two years later, new non-traditional datasets to estimate near-real time became particularly relevant widely used international monitoring modelling activities during pandemic. This study investigates impact pandemic on European (the 27 EU Member States UK) by comparing a...
The purpose of this study is to characterize atmospheric pollution and its sources in two West African urban sites during the dry season (January 2009 Bamako, Mali, December Dakar, Senegal). Particulate Matter (PM) source apportionment was performed using Principal Component Analysis (PCA) Positive Matrix Factorization (PMF). Carbonaceous components, water-soluble inorganic compounds, trace elements were analyzed from PM (TSP, PM10, PM2.5) samples. measured PM2.5 PM10 concentrations 5 10...
Abstract. The Eurodelta-Trends multi-model chemistry-transport experiment has been designed to facilitate a better understanding of the evolution air pollution and its drivers for period 1990–2010 in Europe. main objective is assess efficiency pollutant emissions mitigation measures improving regional scale quality. present paper formulates scientific questions policy issues being addressed by modelling with an emphasis on how design technical features answer these questions. three tiers...