Tracking atmospheric pollution sources by satellite remote senging and atmospheric modelling.

Meteorological and Air Quality simulations. Revealing trends, causes, health impacts and solutions to air pollution.

- Member of the Committee of Experts for the "Energy Saving Certificates" (ESC) program, in the framework of Wimoov mobility platforms supported by the "French Ministry of Ecological Transition" and the "French Environment and Energy Management Agency" (ADEME).www.ecologique-solidaire.gouv.fr/dispositif-des-certificats-deconomies-denergie- Development of an innovative modelling platform to analyse the effects of future mobility scenarios on air quality. An all-in-one simulation platform (from traffic and mode choice to atmospheric chemistry and transport), for quantifying local pollution impact on citizens health. In partnership with Renault, PSA and IFPEN.

R&D solutions for data analysis and software development in C#, WPF, Python (Numpy, Scipy, Scikit-learn...) for energy management: • Development of Desktop applications, creating and delivering customer solutions and services based on Microsoft technologies. • Simulation and modelisation of railway transport energy consumption. Project : In2Dreams (H2020), INtelligent solutions 2ward the Development of Railway Energy and Asset Management Systems in Europe, www.in2dreams.eu.

General Physics

Research activity as Research Engineer in atmospheric numerical modelling, chemical transport modelling, pollution dispersion, satellite retrievals and fluid dynamics, using LinuxOS (with G. Dufour, G. Foret, M. Beekman, J. Cuesta, G. Siour, ...).Developement of advanced inverse modelling techniques, for satellite data assimilation, to correct emission inventories with high spatial and temporal resolution. The PYVAR-CHIMERE (Fortran, Python) inverse modelling tool, based on CHIMERE chemical transport model (CTM) and a 4DVAR assimilation tool, is applied to derive gridded emissions of NOx over East Asia, from NO2 satellite observations.Responsible of model simulations developement, setup and run, and data analysis (Python, Fortran, IDL, Matlab).

Research activity as Research Engineer in atmospheric satellite multispectral retrievals (with G. Dufour, G. Foret, M. Beekman, J. Cuesta, M. Eremenko, ...).Multispectral (IR + UV) measurements of tropospheric ozone from present (IASI and GOME2) and future (IASI-NG and UVNS) spaceborne instruments, on board of the new generation satellite MetOp-SG (ESA, EUMETSAT, CNES).----Current and future satellite observations offer a great potential for monitoring air quality on daily and global basis. However, measurements from currently in orbit sensors offer a limited capacity to probe surface concentrations of gaseous pollutants such as tropospheric ozone. Using single-band approaches based on IASI spaceborne thermal infrared measurements, only ozone down to the lower troposphere (3-4 km of altitude at lowest) may be observed (Eremenko et al., 2008). A recent multispectral method combining IASI and GOME-2 (both onboard MetOp satellite) spectra, respectively from the IR and UV, has shown enhanced sensitivity for probing ozone at the lowermost troposphere, but with maximum sensitivity around 2 km at lowest (Cuesta et al., 2013). Future spatial missions will be launched in the upcoming years, such as EPS-SG, carrying new generation sensors like IASI-NG and UVNS that will enhance the capacity to observe ozone pollution, and particularly when combining them through a multispectral synergism.

Research activity as Research Engineer in atmospheric modelling and geophysical fluid dynamics.Model simulation of thunderstorm activity and atmospheric gravity wave generation in tropical and mid-latitude convective systems, with the use of the WRF (Weather Research and Forecasting) model, one of the largest program adopted by military and private meteorological services worldwide.FIELDS: dynamic meteorology, data analysis and visualization, atmopsheric numerical modeling (WRF), High Performance Computing (HPC) at the "Very Large Computing Center" of CEA (TGCC, Ter@tec).Simulations des ondes de gravité induites par les systèmes de convection profonde en régime tropical, à l'aide des supercalculateurs massivement parallèles du "Très Grand Centre de Calcul" du CEA (TGCC, Ter@tec).

Statistical analysis (IDL) of large satellite dataset (from AQUA, PARASOL, CALIPSO, ...) of cloud and aerosol optical properties to infer the effect of anthropogenic aerosols and fine particles on cloud microphysics and life-cycle, under the direction of François-Marie Bréon.Accurate quantification of the aerosol radiative effect (cooling/warming), with the use of a numerical model for atmospheric radiative transfer calculations, constrained by satellite retrievals.

Analysis of meteorological radar data, to observe the evolution of precipitation patterns in Southern Italy and setup an advanced now-casting system.

Accurate analysis of the dispersive characteristics of Ionosphere on satellite (L-band) signals, to quantify and minimize the positioning error of mono-frequency GPS system algorithm, under the direction of the head of R&D departement, Stefano Lagrasta.Research activity on implementation issues surrounding the new International Astronomical Union reference system for astrodynamics.