41. Photo-thermal interferometerLuka Drinovec, Griša Močnik, 2020, patent Abstract: A photo-thermal interferometer for measuring the light absorption of an aerosol or gas comprises a first laser source emitting a laser beam and a beam splitter adapted to divide the laser beam into a probe beam and a reference beam. The interferometer further comprises first optical elements which are adapted to direct the probe beam such that it passes through the aerosol and interferes with the reference beam thereafter thereby causing interference patterns. A detector detects the interference patterns. The interferometer further comprises a second laser source configured to emit a pump beam for transferring energy to the aerosol. Second optical elements are adapted to direct the pump beam such that it overlaps with the probe beam at least partially in the aerosol or gas. At least one of the second optical elements modifying the pump beam is an axicon.
Keywords: aerosol, absorption, black carbon
Published in RUNG: 15.09.2020; Views: 2917; Downloads: 0
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42. Air quality and climate change - how smart can the cities be?Griša Močnik, Matevž Lenarčič, 2020, unpublished invited conference lecture Abstract: What starts as an air quality problem in urban areas, ends up as a climate change problem globally. Emissions from cities and the power generating facilities powering the cities have local, regional and global effects. We show examples spanning these scales with very practical advice on how to start abatement locally.
Keywords: air quality, climate change, black carbon, aerosol, co2, smart city
Published in RUNG: 11.09.2020; Views: 3195; Downloads: 0
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43. The new instrument using a TC–BC (total carbon–black carbon) method for the online measurement of carbonaceous aerosolsMartin Rigler, Luka Drinovec, Gašper Lavrič, Anastasia Vlachou, André S. H. Prévôt, Jean-Luc Jaffrezo, IASONAS STAVROULAS, Jean Sciare, Judita Burger, Irena Krajnc, Janja Turšič, Anthony D. A. Hansen, Griša Močnik, 2020, original scientific article Abstract: We present a newly developed total carbon analyzer (TCA08) and a method for online speciation of carbonaceous aerosol with a high time resolution. The total carbon content is determined by flash heating of a sample collected on a quartz-fiber filter with a time base between 20 min and 24 h. The limit of detection is approximately 0.3 µg C, which corresponds to a concentration of 0.3 µg C m−3 at a sample flow rate of 16.7 L min−1 and a 1 h sampling time base. The concentration of particulate equivalent organic carbon (OC) is determined by subtracting black carbon concentration, concurrently measured optically by an Aethalometer®, from the total carbon concentration measured by the TCA08. The combination of the TCA08 and Aethalometer (AE33) is an easy-to-deploy and low-maintenance continuous measurement technique for the high-time-resolution determination of equivalent organic and elemental carbon (EC) in different particulate matter size fractions, which avoids pyrolytic correction and the need for high-purity compressed gases. The performance of this online method relative to the standardized off-line thermo-optical OC–EC method and respective instruments was evaluated during a winter field campaign at an urban background location in Ljubljana, Slovenia. The organic-matter-to-organic-carbon ratio obtained from the comparison with an aerosol chemical speciation monitor (ACSM) was OM/OC=1.8, in the expected range.
Keywords: total carbon, aeroosl, black carbon, carbonaceous matter
Published in RUNG: 17.08.2020; Views: 2919; Downloads: 76
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45. Experimental determination of black and brown carbon heating rate from mid-latitudes to the Arctic ocean, and related energy gradientLuca Ferrero, Luca Cataldi, Griša Močnik, Asta Gregorič, Piotr Markuszewski, Przemek Makuch, Paulina Pakszys, Tomek Petelski, E. Bolzacchini, Tymon Zielinski, 2019, published scientific conference contribution abstract Keywords: black carbon, heating rate, Arctic
Published in RUNG: 17.07.2019; Views: 3542; Downloads: 0
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46. Efficient traffic regulation based on urban Black Carbon measurements and prediction modelAsta Gregorič, Luka Drinovec, Griša Močnik, Anja Barle, Matija Marolt, Jernej Henigman, Borut Šuštar, Mitja Ferlan, Andrej Pangeršič, 2018, published scientific conference contribution abstract Keywords: air quality, black carbon
Published in RUNG: 29.10.2018; Views: 3632; Downloads: 0
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48. Influence of clouds on black carbon direct radiative effect and heating rate over MilanAsta Gregorič, Luca Ferrero, Griša Močnik, S. Cogliati, F. Barnaba, L. Di Liberto, G. P. Gobbi, E. Bolzacchini, 2017, published scientific conference contribution abstract Keywords: black carbon, direct radiative effect, heating rate, clouds
Published in RUNG: 10.10.2017; Views: 4564; Downloads: 251
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49. Distinguishing source specific black carbon production from meteorologically driven temporal variability by means of 222Rn tracerAsta Gregorič, Luka Drinovec, Irena Ježek, Janja Vaupotič, Longlong Wang, Maruška Mole, Samo Stanič, Griša Močnik, 2017, published scientific conference contribution abstract Keywords: black carbon, source apportionment, radon, planetary boundary layer, lidar
Published in RUNG: 10.10.2017; Views: 5353; Downloads: 229
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