1. Two-dimensional BC tracer model to distinguish between primary and secondary OC : lecture at The European Aerosol Conference 2024, 25. 8.-30. 8. 2024, Tampere, FinlandMatic Ivančič, Asta Gregorič, Gašper Lavrič, Bálint Alföldy, Irena Ježek, Iasonas Stavroulas, Martin Rigler, 2024, prispevek na konferenci brez natisa Opis: In this work, we propose an extension of this method. Using the Aethalometer model (Sandradewi et al., 2008), BC as a tracer for primary emitted aerosols can be successfully divided into two components – BCff related to the usage of fossil fuels and BCbb emitted from biomass burning. Because the OC/BC ratio is expected to be different for fossil fuels and biomass burning, we can similarly introduce the two components of POC – a fossil fuel-related POCff and a biomass-burning-related POCbb. Ključne besede: BC tracer model, secondary organic carbon, black carbon Objavljeno v RUNG: 14.11.2024; Ogledov: 298; Prenosov: 1 Povezava na datoteko Gradivo ima več datotek! Več... |
2. Particulate air pollution in the heart of the European Union : lessons learned from SAFICA 2017-2018 and SAAERO 2022-2023 projects in Central and Southeast EuropeKatja Džepina, Kristina Glojek, Martin Rigler, Asta Gregorič, Matic Ivančič, Irena Ježek, Griša Močnik, 2024, objavljeni povzetek znanstvenega prispevka na konferenci Opis: Particularly during the cold weather season, countries of the Southeast Europe are experiencing some of the poorest air quality in the world due to the extensive use of solid fuels and old vehicle fleets. The city of Sarajevo is the capital of Bosnia and Herzegovina (BiH) situated within a basin surrounded by mountains. In the winter months (domestic heating season), topography and meteorology cause the pollutants to be trapped within the city basin. Countries of the Southeast Europe lack state-of-the-art atmospheric sciences research and access to sophisticated instrumentation and methodology, despite high levels of ambient pollution and position within the European Union (EU) borders, making it imperative to understand the emission sources, processing and the adverse health effects of atmospheric aerosol pollution.
This presentation will highlight the field measurements in Central and Southeast Europe during the Sarajevo Canton Winter Field Campaign 2017-2018 (SAFICA) and Sarajevo Aerosol Experiment 2022-2023 (SAAERO) projects, centered at the Sarajevo Bjelave supersite. Both projects were envisioned to produce crucial, not previously available information about aerosol emission sources and atmospheric transformations through a combination of online field and offline laboratory measurements. Online measurements during a) SAFICA and b) SAAERO included, a) black carbon, particle number and size distribution, and b) carbonaceous species, elemental composition and bulk chemical composition. SAAERO online measurements also included stationary and mobile measurements of gas- and particle-phase species on board the mobile laboratory in Sarajevo and Zenica, BiH, as well as in Ljubljana, Slovenia and Zagreb, Croatia. Finally, extended SAAERO project included measurements of black carbon at three additional urban centers: Ljubljana, Zagreb, and Belgrade, Serbia, enabling the first comparison of urban air quality in Central and Southeast Europe between two EU and two non-EU capitals.
During both projects, laboratory aerosol analyses determined aerosol bulk chemical composition, selected elements (Huremović et al., 2020; Žero et al., 2022) and molecular species (Pehnec et al., 2020). Aerosol chemical composition determined by aerosol mass spectrometry was further analyzed by Positive Matrix Factorization to separate organic aerosol into subtypes characteristic of specific sources and atmospheric processes. Aerosol oxidative potential was also determined to evaluate aerosol ability to generate reactive oxygen species. Sarajevo and Belgrade have high ambient loadings of aerosol and black carbon, indicative of strong and diverse combustion sources and a major public health hazard. Finally, aerosol surface concentrations will be discussed in the context of European air quality.
We thank Jasminka Džepina, Magee Scientific/Aerosol, TSI and Aerodyne for support. We acknowledge the contribution of the COST Action CA16109 COLOSSAL and SEE Change Net. KDž and ASHP acknowledge the grant by the Swiss NSF (Scientific Exchanges IZSEZ0_189495), KDž, GM and ASHP European Commission SAAERO grant (EU H2020 MSCA-IF 2020 #101028909), GM Slovenian ARIS grant (P1-0385), SF Croatian HRZZ grant (BiREADI IP-2018-01-3105), and AG, MR, MI, BA and IBJ Slovenian ARIS grant (L1-4386).
Pehnec, G., et al., Sci. Tot. Environ., 734, 139414, 2020.
Huremović, J., et al., Air Qual. Atmos. Health, 13, 965–976, 2020.
Žero, S., Žužul, S., et al., Environ. Sci. Technol., 56, 7052−7062, 2022. Ključne besede: air pollution, sources of pollution, PMF Objavljeno v RUNG: 18.03.2024; Ogledov: 2350; Prenosov: 7 Celotno besedilo (314,28 KB) Gradivo ima več datotek! Več... |
3. Highly time-resolved apportionment of carbonaceous aerosols from wildfire using the TC-BC method : camp fire 2018 case studyMatic Ivančič, Martin Rigler, Bálint Alföldy, Gašper Lavrič, Irena Ježek, Asta Gregorič, 2023, izvirni znanstveni članek Ključne besede: black carbon, brown carbon, carbonaceous aerosol, wildfire, air quality, CASS Objavljeno v RUNG: 06.06.2023; Ogledov: 1989; Prenosov: 16 Celotno besedilo (18,34 MB) Gradivo ima več datotek! Več... |
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5. Two-year-long high-time-resolution apportionment of primary and secondary carbonaceous aerosols in the Los Angeles Basin using an advanced total carbon–black carbon (TC-BC([lambda])) methodMatic Ivančič, Asta Gregorič, Gašper Lavrič Palancsai, Bálint Alföldy, Irena Ježek, Sina Hasheminassab, Payam Pakbin, Faraz Ahangar, Mohammad Sowlat, Steven Boddeker, Martin Rigler, 2022, izvirni znanstveni članek Ključne besede: carbonaceous aerosols, black carbon, brown carbon, Carbonaceous Aerosol Speciation System Objavljeno v RUNG: 04.08.2022; Ogledov: 2282; Prenosov: 9 Povezava na celotno besedilo Gradivo ima več datotek! Več... |
6. The impact of temperature inversions on black carbon and particle mass concentrations in a mountainous areaKristina Glojek, Griša Močnik, Honey Dawn C. Alas, Andrea Cuesta-Mosquera, Luka Drinovec, Asta Gregorič, Matej Ogrin, Kay Weinhold, Irena Ježek, Martin Rigler, Maja Remškar, Miha Markelj, 2022, izvirni znanstveni članek Opis: Residential wood combustion is a widespread practice in Europe with a serious impact on air quality, especially in mountainous areas. While there is a significant number of studies conducted in deep urbanized valleys and basins, little is known about the air pollution processes in rural shallow hollows, where around 30 % of the people in mountainous areas across Europe live. We aim to determine the influence of ground temperature inversions on wood combustion aerosol pollution in hilly, rural areas. The study uses Retje karst hollow (Loški Potok, Slovenia) as a representative site for mountainous and hilly rural areas in central and south-eastern Europe with residential wood combustion. Sampling with a mobile monitoring platform along the hollow was performed in December 2017 and January 2018. The backpack mobile monitoring platform was used for the determination of equivalent black carbon (eBC) and particulate matter (PM) mass concentrations along the hollow. To ensure high quality of mobile measurement data, intercomparisons of mobile instruments with reference instruments were performed at two air quality stations during every run. Our study showed that aerosol pollution events in the relief depression were associated with high local emission intensities originating almost entirely from residential wood burning and shallow temperature inversions (58 m on average). The eBC and PM mass concentrations showed stronger associations with the potential temperature gradient (R2=0.8) than with any other meteorological parameters taken into account (ambient temperature, relative humidity, wind speed, wind direction, and precipitation). The strong association between the potential temperature gradient and pollutant concentrations suggests that even a small number of emission sources (total 243 households in the studied hollow) in similar hilly and mountainous rural areas with frequent temperature inversions can significantly increase the levels of eBC and PM and deteriorate local air quality. During temperature inversions the measured mean eBC and PM2.5 mass concentrations in the whole hollow were as high as 4.5±2.6 and 48.0 ± 27.7 µg m−3, respectively, which is comparable to larger European urban centres. Ključne besede: air pollution, black carbon, sources, temperature inversion, mountainous area Objavljeno v RUNG: 03.05.2022; Ogledov: 2479; Prenosov: 0 Gradivo ima več datotek! Več... |
7. Detection of mineral dust concentration in Mediterranean and Central Europe by measuring optical absorption of dust particlesMatic Ivančič, Irena Ježek, Martin Rigler, Asta Gregorič, Balint Alfoldy, Luka Drinovec, JEAN SCIARE, Michael Pikridas, FLORIN UNGA, Andrés Alastuey, Marco Pandolfi, Jesús Yus-Díez, Griša Močnik, 2020, prispevek na konferenci brez natisa Ključne besede: mineral dust, optical absorption, virtual impactor Objavljeno v RUNG: 22.11.2021; Ogledov: 3051; Prenosov: 0 Gradivo ima več datotek! Več... |
8. Determination of high-time resolution mineral dust concentration in real-time by optical absorption measurementsMatic Ivančič, Irena Ježek, Martin Rigler, Asta Gregorič, Bálint Alföldy, Rok Podlipec, Luka Drinovec, Griša Močnik, 2021, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: mineral dust, concentration, aerosols, air quality Objavljeno v RUNG: 17.11.2021; Ogledov: 2633; Prenosov: 18 Povezava na celotno besedilo Gradivo ima več datotek! Več... |
9. The determination of source-separated black carbon emission rates using radon as a tracer of atmospheric dynamicsAsta Gregorič, Luka Drinovec, Janja Vaupotič, Irena Ježek, Matic Ivančič, Janja Turšič, Griša Močnik, 2021, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: black carbon, emission rate, aethalometer, radon Objavljeno v RUNG: 17.11.2021; Ogledov: 2722; Prenosov: 44 Povezava na celotno besedilo Gradivo ima več datotek! Več... |
10. Camp Fire 2018: Highly time-resolved study of eOC, eBC and BrC aerosols by the TC-BC (total carbon–black carbon) methodMatic Ivančič, Gašper Lavrič, Asta Gregorič, Balint Alfoldy, Irena Ježek, Jack Connor, Charity Garland, Jonathan P. Bower, Martin Rigler, 2021, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: total carbon, black carbon, brown carbon Objavljeno v RUNG: 17.11.2021; Ogledov: 2836; Prenosov: 56 Celotno besedilo (4,62 MB) |