1. Aerosol spectral optical properties in the Paris urban area and its peri-urban and forested surroundings during summer 2022 from ACROSS surface observationsLudovico Di Antonio, Claudia Di Biagio, Paola Formenti, Aline Gratien, Vincent Michoud, Christopher Cantrell, Astrid Bauville, Antonin Bergé, Mathieu Cazaunau, Griša Močnik, 2025, original scientific article Abstract: Abstract. The complex refractive index (CRI; n−ik) and the single scattering albedo (SSA) are key parameters driving the aerosol direct radiative effect. Their spatial, temporal, and spectral variabilities in anthropogenic–biogenic mixed environments are poorly understood. In this study, we retrieve the spectral CRI and SSA (370–950 nm wavelength range) from in situ surface optical measurements and the number size distribution of submicron aerosols at three sites in the greater Paris area, representative of the urban city, as well as its peri-urban and forested rural environments. Measurements were taken as part of the ACROSS (Atmospheric Chemistry of the Suburban Forest) campaign in June–July 2022 under diversified conditions: (1) two heatwaves leading to high aerosol levels, (2) an intermediate period with low aerosol concentrations, and (3) an episode of long-range-transported fire emissions. The retrieved CRI and SSA exhibit an urban-to-rural gradient, whose intensity is modulated by the weather conditions. A full campaign average CRI of 1.41−0.037i (urban), 1.52−0.038i (peri-urban), and 1.50−0.025i (rural) is retrieved. The imaginary part of the CRI (k) increases and the SSA decreases at the peri-urban and forest sites when exposed to the influence of the Paris urban plume. Values of k > 0.1 and SSA < 0.6 at 520 nm are related to a black carbon mass fraction larger than 10 %. Organic aerosols are found to contribute to more than 50 % of the aerosol mass and up to 10 % (urban), 17 % (peri-urban), and 22 % (forest) of the aerosol absorption coefficient at 370 nm. A k value of 0.022 (370 nm) was measured at the urban site for the long-range-transported fire episode.
Keywords: aerosol optical properties, aerosol refractive index, absorption, air pollution
Published in RUNG: 17.03.2025; Views: 221; Downloads: 0
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3. Exploring innovative approaches in flavored ciders : physicochemical and antioxidative properties of cornelian cherry – apple ciderErika Jež, Marianna Mazur, Tatjana Radovanović Vukajlović, Mitja Martelanc, Bartłomiej Menażyk, Maja Pečarič, Jelena Topić, Melita Sternad Lemut, Guillaume Antalick, Branka Mozetič Vodopivec, Lorena Butinar, 2024, published scientific conference contribution abstract Keywords: Cornelian cherry, apple cider, antioxidative properties
Published in RUNG: 27.11.2024; Views: 733; Downloads: 1
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6. Analysis of drug release from CS : CEL based biocomposites modified with antibiotic-loaded sporopolleninDorota Korte, Matevž Može Davidović, Mohanachandran Nair Sindhu Swapna, Petra Makorič, Chieu D. Tran, Mladen Franko, 2024, published scientific conference contribution abstract Keywords: CS:CEL based biocomposites, porosity, thermal properties, beam deflection spectrometry
Published in RUNG: 23.09.2024; Views: 975; Downloads: 2
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10. Foods2012 Keywords: food sciences and technology, food chemistry and physical properties, food engineering and production, food security and safety, food toxicology, sensory and food quality, food analysis, functional foods, food and health, food psychology, food and environment
Published in RUNG: 10.05.2024; Views: 1506; Downloads: 4
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