Conference Agenda
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WG2: Chemical characterization of carbonaceous aerosols (I)
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10:45am - 11:00am
FR1-4: 1 Seasonal Cycles and Sources of Water-Soluble Organic Carbon and Nitrogen in Size Segregated Aerosols in Bolu (Türkiye) 1Department of Chemistry, University of Crete; 2Department of Environmental Engineering, Bolu Abant İzzet Baysal University; 3Department of Environmental Engineering, Bursa Technical University; 4Climate and Atmosphere Research Center (CARE-C), The Cyprus Institute; 5Institute for Environmental Research and Sustainable Development, National Observatory of Athens; 6Institute of Environmental Sciences, Boğaziçi University Although water-soluble OC (WSOC) and ON (WSON) constitute a substantial fraction of aerosols, particularly in urban areas affected by agricultural, biogenic, and biomass burning emissions, there remains a paucity of information regarding the size-segregated levels, sources, and seasonality of these parameters. The primary objective of this study is to determine the levels, seasonality, and sources of WSOC and WSON in size-segregated aerosol samples collected at a ground-based station (40.73° N, 31.60º E, 743 m asl) in Bolu (Türkiye) between April 2021 and April 2022.
11:00am - 11:15am
FR1-4: 2 Smoke on the water at Ioannina, Greece: emissions and processing of wood burning products on aerosols 1Institute for Environmental Research and Sustainable Development, National Observatory of Athens, Greece; 2Climate and Atmosphere Research Centre, The Cyprus Ιnstitute, 2121 Nicosia, Cyprus; 3Laboratory of Meteorology, Department of Physics, University of Ioannina, 45110 Ioannina, Greece This study examines the chemical composition and sources of aerosols during severe winter pollution episodes in Ioannina, Greece. Using data from an ACSM, a PTR-MS and an aethalometer, biomass burning was identified as the dominant pollution source, significantly contributing to organic aerosols (OA) and brown carbon absorption. Combined aerosol acidity and liquid water content lead to enhanced secondary aerosol formation through aqueous phase processing. Concurrently, PMF showed that 58% of OA originates from biomass burning. Not least, Ioannina’s basin location and temperature inversions lead to pollutant accumulation, highlighting the urgent need for targeted air quality policies in southeastern European cities.
11:15am - 11:30am
FR1-4: 3 Optical and chemical properties of smoke aerosols from peri-urban wildfires in Athens 1Department of Chemical Engineering, University of Western Macedonia; 2Institute for Environmental Research and Sustainable Development, National Observatory of Athens; 3ECPL, Department of Chemistry, University of Crete; 4Department of Mechanical Engineering, University of Western Macedonia This work focuses on wildfire events, in the climate sensitive area of the Eastern Mediterranean and especially in Greece. The analysis focuses on three intense wildfire events that occurred in the proximity of Athens during the first half of August 2021 (August 3–10: Varympompi and Euboea forest fires; August 17–19: Vilia forest fire), following a prolonged and intense heatwave. The study assesses the impact of transported smoke from forest fires on urban air quality and aerosol optical, physical and chemical properties.
11:30am - 11:45am
FR1-4: 4 Secondary organic aerosol speciation observed in urban and forested sites of the Paris region during the summer 2022 1LISA, Université Paris Cité and Univ Paris Est Creteil, Paris, 75013, France; 2Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, United Kingdom; 3Observatoire des Sciences de l’Univers OSU-EFLUVE, Univ Paris Est Creteil, Créteil, 94010, France; 4LISA, Univ Paris Est Creteil and Université Paris Cité, Créteil, 94010, France This work combines chamber experiments and field measurements to determine the contribution of different secondary organic aerosol precursors into the organic carbon observed at urban and forested areas of Paris. Organic carbon measurements and molecular scale analyses using HRMS, LC-MS and GC-MS highlight the contribution of anthropogenic sources into the aerosol composition, which predominates for both environments.
11:45am - 12:00pm
FR1-4: 5 Real-time Molecular Emissions from a Modern Domestic Stove: The Role of Malfunctions and Operating Conditions 1Department of Earth and Environmental Sciences, University of Manchester; 2National Centre for Atmospheric Science; 3Department of Mechanical, Aerospace and Civil Engineering, University of Manchester; 4Wolfson Atmospheric Chemistry Laboratory, University of York Domestic wood burning is a major source of particulate matter (PM) emissions in the UK, exceeding road traffic emissions. Despite mitigation efforts like 'EcoDesign' stoves, emissions have risen over two decades. UK estimates rely on lab tests that may not reflect real-world conditions, especially during transient phases like ignition and reloading. A new test facility at the University of Manchester used real-time analysers, including EESI mass spectrometry, to monitor emissions under varied conditions. Findings reveal significant chemical variations across burn phases, with oxidised gases peaking early and nitrogen-containing aerosols increasing during smouldering, highlighting the impact of combustion conditions
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