| Title: |
Aerosol complex refractive index retrieval in the Paris urban area and its forested surroundings during the ACROSS field campaign: variability and constraint for direct radiative effect estimation in regional models |
| Authors: |
Di Antonio, Ludovico; Di Biagio, Claudia; Beekmann, Matthias; Gratien, Aline; Formenti, Paola; Bauville, Astrid; Bérge, Antonin; de Brito, Joel, Ferreira; Cazaunau, Mathieu; Chevaillier, Servanne; D’anna, Barbara; de Haan, David, Owen; Favez, Olivier; Gaimoz, Cecile; Garret, Olivier; Hawkins, Leila, N; Kammer, Julien; Language, Brigitte; Maisonneuve, Franck; Močnik, Griša; Monod, Anne; Noyalet, Gael; Pereira, Diana; Perrier, Sebastien; Petit, Jean-Eudes; Pronovost, Drew; Riffault, Véronique; Riley, Sydney; Riva, Matthieu; Shahin, Marwa; Siour, Guillaume; Temime-Roussel, Brice; Yu, Chenjie; Zapf, Pascal; Foret, Gilles; Doussin, Jean-François; Cantrell, Christopher; Michoud, Vincent |
| Contributors: |
Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)); Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité); Centre for Energy and Environment (CERI EE - IMT Nord Europe); Ecole nationale supérieure Mines-Télécom Lille Douai (IMT Nord Europe); Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT); Laboratoire Chimie de l'environnement (LCE); Aix Marseille Université (AMU)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS); University of San Diego (USD); Institut National de l'Environnement Industriel et des Risques (INERIS); Ville de Paris; Harvey Mudd College; University of Nova Gorica; LCSQA - Laboratoire Central de Surveillance de la Qualité de l’Air; Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE); Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA); Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON); Université Claude Bernard Lyon 1 (UCBL); Université de Lyon-Université de Lyon-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS); Department of Atmospheric and Oceanic Sciences Boulder (ATOC); University of Colorado Boulder; ANR-17-MPGA-0002,ACROSS,Atmospheric ChemistRy Of the Suburban ForeSt(2017); ANR-11-LABX-0005,Cappa,Physiques et Chimie de l'Environnement Atmosphérique(2011) |
| Source: |
European Geosciences Union General Assembly 2023 ; https://hal.science/hal-04199565 ; European Geosciences Union General Assembly 2023, Apr 2023, Vienne, Austria. ⟨10.5194/egusphere-egu23-420⟩ |
| Publisher Information: |
CCSD |
| Publication Year: |
2023 |
| Collection: |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
| Subject Terms: |
Complex refractive index; direct radiative effect; aerosol mixing; urban; forest; [SDU.OCEAN]Sciences of the Universe [physics]/Ocean; Atmosphere |
| Subject Geographic: |
Vienne; Austria |
| Description: |
International audience ; The complex refractive index (CRI) is one of the key parameter driving aerosol spectral opticalproperties and direct radiative effects (DRE). Its value and spectral variation under differentconditions, such as anthropogenic− and biogenic−dominated environments andanthropogenic−biogenic mixing situations, remains not fully understood. As a consequence,oversimplified representations of aerosol optical properties are generally used in climate models.Therefore, measurements of aerosol CRI in different environments and their inclusion in modelsare needed. The field observations from the ACROSS campaign, performed in June-July 2022 in theIle de France region, are used in this study to deepen the knowledge of aerosol optical properties,aiming to improve the aerosol representation in the CHIMERE model and provide the bestconstraint for DRE simulations. Measurements obtained both at the Paris city center and theRambouilllet rural forest sites during ACROSS are considered, in order to explore the CRI variabilityfrom anthropogenic−dominated to biogenic−dominated environments, includinganthropogenic−biogenic mixing situations. The CRI retrievals at seven different wavelengths,performed by combining the Mie theory with optical and size distribution measurements, arerepresentative of different atmospheric conditions, aerosol loadings as well as type and chemicalcompositions. In fact, the June-July 2022 period was characterized by highly diversified weatherconditions: 1) two strong heatwaves, promoting SOA build-up and favoring the export of the Parispollution plume towards the forest site; 2) Saharan dust events transported from the upperatmosphere to the ground; 3) biomass burning episode; 4) periods with reduced anthropogenicinfluence. The CRI retrievals under these different conditions and their link to particulate chemicalcomposition is investigated. Hence, the CRI dataset presented here constitutes a unique datasetfrom which models can benefit to validate and constrain simulations and DRE ... |
| Document Type: |
conference object |
| Language: |
English |
| DOI: |
10.5194/egusphere-egu23-420 |
| Availability: |
https://hal.science/hal-04199565; https://hal.science/hal-04199565v1/document; https://hal.science/hal-04199565v1/file/EGU23-420-DiAntonio.pdf; https://doi.org/10.5194/egusphere-egu23-420 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.A6A5666A |
| Database: |
BASE |