An ACROSS measurement-modeling thesis on the properties and radiative impact of aerosols in the Ile de France region by Ludovico Di Antonio

 

 

Ludovico Di Antonio defended his thesis on July 8, 2024, entitled: “Properties, distribution and radiative effect of aerosols in the Ile-de-France region using a coupled measurement-modeling approach”, Doctoral School 531 SIE (Environmental Sciences and Engineering).

 

Le jury de thèse se composait de :
Maria KANAKIDOU, Professeure, University of Crete, Department of Chemistry (rapportrice)
Oleg DUBOVIK, Directeur de recherche, Université de Lille, CNRS, LOA (rapporteur)
Jean-Christophe RAUT, Maître de conférences, Sorbonne Université, CNRS, LATMOS (examinateur)
Solène TURQUETY, Professeure, Sorbonne Université, CNRS, LATMOS (présidente du jury)
Jean-François DOUSSIN, Directeur de recherche, CNRS, LISA (directeur de thèse)
Gilles FORET, Maître de conférences, UPEC, LISA (co-directeur de thèse)
Claudia DI BIAGIO, Chargée de recherche, CNRS, LISA (co-encadrante de thèse)
Matthias BEEKMANN, Directeur de recherche, CNRS, LISA (co-encadrant de thèse)

 

 

The aim of this thesis is to implement a synergistic measurement and modeling approach in order to achieve two main objectives: i) better understand the spectral optical properties of aerosols (aerosol optical thickness, simple scattering albedo and complex refractive index) at the regional scale where mixing between anthropogenic and biogenic aerosols occurs, and assess their temporal and spatial variability under varying conditions; ii) produce a robust estimate of the direct radiative effect of aerosols and study the dependence of DRE on the aerosol mixing state and the contribution of different aerosol species. The application framework for this study is the Ile-de-France region, a densely populated area of Europe where anthropogenic emissions from the Paris metropolitan area interact with biogenic emissions from adjacent forested areas. The strategy of this work is based on the combination of observations from the international ACROSS (Atmospheric ChemistRy Of the Suburban ForeSt) campaign and observations from existing ground-based and satellite databases, with simulations from the WRF-CHIMERE 3-D chemistry-transport model, enabling the most comprehensive possible assessment of simulated aerosol mass, chemical composition and spectral optical properties, which are key parameters for DRE estimation.

 

(Left) Presentation of the work by L. Di Antonio during the defense. (Center) Preparation and (right) overview of experimental devices during the ACROSS campaign.

 

 

More : ACROSS project
https://emryslda.github.io/

 

Di Antonio, L., Di Biagio, C., Foret, G., Formenti, P., Siour, G., Doussin, J.-F., and Beekmann, M.: Aerosol optical depth climatology from the high–resolution MAIAC product over Europe: differences between major European cities and their surrounding environments, Atmos. Chem. Phys., 23, 12455–12475, https://doi.org/10.5194/acp-23-12455-2023, 2023.

Di Antonio, L., C. Di Biagio, P. Formenti, A. Gratien, V. Michoud, C. Cantrell, P. Acharja, A. Bauville, A. Bergé, M. Cazaunau, S. Chevaillier, M. Cirtog, P. Coll, B. D’Anna, J. F. de Brito, D. O. De Haan, J. R. Dignum, S. Deshmukh, O. Favez, P.-M. Flaud, C. Gaimoz, L. N. Hawkins, J. Kammer, B. Language, F. Maisonneuve, G. Močnik, E. Perraudin, J.-E. Petit, L. Poulain, P. Pouyes, E. D. Pronovost, V. Riffault, K. I. Roundtree, M. Shahin, G. Siour, E. Villenave, P. Zapf, G. Foret, J.-F. Doussin1, and M. Beekmann, Aerosol spectral optical properties in the Paris urban area and its peri−urban and forested surroundings from summer 2022 ACROSS surface observations, Atmos. Chem. Phys., submitted.

 

Di Antonio, L., M. Beekmann, G. Siour, V. Michoud, C. Cantrell, M. Cirtog, J F. de Brito, P. Formenti, A. Gratien, V. Gros, M. Haeffelin, L. N. Hawkins, S. Kotthaus, D. Pereira, J.-E. Petit, V. Riffault, C. Yu, G. Foret, J.-F. Doussin, and C. Di Biagio, Modelling of atmospheric variability of gas and aerosols during the ACROSS campaign 2022 in the greater Paris area: evaluation of the meteorology, dynamics and chemistry, Atmos. Chem. Phys., submitted.