A5062126505- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Air Quality Monitoring and Forecasting
- Vehicle emissions and performance
- Atmospheric Ozone and Climate
- Atmospheric aerosols and clouds
- Optical Imaging and Spectroscopy Techniques
- Photoacoustic and Ultrasonic Imaging
- Wind and Air Flow Studies
- Calibration and Measurement Techniques
- Non-Invasive Vital Sign Monitoring
- Atmospheric and Environmental Gas Dynamics
- Maritime Transport Emissions and Efficiency
- Soil Moisture and Remote Sensing
- Aeolian processes and effects
- Catalytic Processes in Materials Science
- Conservation Techniques and Studies
- Spaceflight effects on biology
- Nuclear Physics and Applications
- Meteorological Phenomena and Simulations
- Thermoregulation and physiological responses
Jolly Aero (Slovenia)
2021-2025
University of Ljubljana
2016-2018
Milan Vidmar Electric Power Research Institute
2012-2014
Abstract. Providing reliable observations of aerosol particles' absorption properties at spatial and temporal resolutions suited to climate models is utter importance better understand the effects that atmospheric particles have on climate. Nowadays, one instruments most widely used in international monitoring networks for situ surface measurements light multi-wavelength dual-spot Aethalometer, AE33. The AE33 derives coefficients seven different wavelengths from optical attenuation through a...
In recent years, carbonaceous aerosols (CA) have been recognized as a significant contributor to the concentration of particles smaller than 2.5 μm (i.e., PM2.5), with negative impact on public health and Earth's radiative balance. this study, we present method for CA apportionment based high-time-resolution measurements total carbon (TC), black (BC), spectral dependence absorption coefficient using recently developed Carbonaceous Aerosol Speciation System (CASS). Two-year-long at two...
Abstract. This study compares the results of three on-road chasing campaigns conducted in 2011, 2017, and 2023, making it first to report how real-world emission factors (EF) for diesel vehicles have changed over a decade. By directly measuring emissions during driving, this research provides critical insights into effectiveness control technologies regulatory interventions. The findings highlight transformative impact Diesel Particulate Filters (DPFs), which consistently reduced black...
Abstract. Brown carbon (BrC) is a fraction of organic aerosol (OA) that absorbs radiation in the ultraviolet and short visible wavelengths. Its contribution to radiative forcing uncertain due limited knowledge its imaginary refractive index (k). This study investigates variability k for OA from wildfires, residential, shipping, traffic emission sources over Europe. The Multiscale Online Nonhydrostatic Atmosphere Chemistry (MONARCH) model simulated concentrations source contributions, feeding...
Particulate matter from wood combustion has a significant impact on climate and human health. Black carbon (BC) brown (BrC) are strong light absorbers that reduce the transparency of atmosphere in long short wavelength range. As aerosol ages, some molecular chromophores break down particles become less absorbent (photobleaching). On other hand, photochemical ageing can modify organic molecules, which light-absorbing even though they were colorless after emission. In addition, secondary...
Abstract. Black carbon (BC) is recognized as the most important warming agent among atmospheric aerosol particles. The absorption efficiency of pure BC rather well-known, nevertheless mixing with other particles can enhance light efficiency, thus directly affecting Earth's radiative balance. effects on climate enhancement due to these aerosols are not yet well constrained because depend availability material for BC, creating regional variations. Here we present mass cross-section (MAC) and...
This study analyzes the aerosol optical properties (scattering, absorption coefficients, single scattering albedo), supported by chemical composition measurements, in marine boundary layer of East Mediterranean – Middle (EMME) region, aiming to explore spatio-temporal variability, mixing state, sources and dominant types. The measurements were taken during AQABA (Air Quality climate change Arabian Basin) cruise campaign (1st July September 1, 2017) from south France Kuwait back. Both...
Subdiffusive reflectance captured at short source-detector separations provides increased sensitivity to the scattering phase function and hence allows superficial probing of tissue ultrastructure. Consequently, estimation subdiffusive optical parameters has been subject many recent studies focusing on lookup-table-based (LUT) inverse models. Since an adequate description requires additional related parameters, LUT models, which grow exponentially with number estimated become excessively...
Source apportionment (SA) techniques allocate the measured ambient pollutants with their potential source origin; thus, they are a powerful tool for designing air pollution mitigation strategies. Positive Matrix Factorization (PMF) is one of most widely used SA approaches, and its multi-time resolution (MTR) methodology, which enables mixing different instrument data in original time resolution, was focus this study. One year co-located measurements Barcelona, Spain, non-refractory...
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Discriminating the absorption coefficients of aerosol mineral dust and black carbon (BC) in different size fractions is a challenge because BC's large mass cross-section compared to dust. Ambient wavelength dependent (babs) supermicron submicron were determined with high time resolution. The measurements performed simultaneously using identical systems at an urban regional background site Qatar. At each site, taken by co-located Aethalometers, one virtual impactor (VI) other PM1 cyclone...
Abstract. Brown carbon (BrC) is a fraction of Organic Aerosols (OA) that absorbs radiation in the ultraviolet and short visible wavelengths. Its contribution to radiative forcing uncertain due limited knowledge its imaginary refractive index (k ). This study investigates variability k for OA from wildfires, residential, shipping, traffic emission sources over Europe. The MONARCH atmospheric chemistry model simulated concentrations source contributions, feeding an offline optical tool...
Abstract. Accurate measurements of light absorption by aerosolized particles, especially black carbon (BC), are utter importance since BC represents the second most important climate-warming agent after dioxide (CO2). Reducing uncertainties related to measurement techniques will improve global estimation concentration and radiative effects absorbing aerosols. Currently, one widely used instruments for is dual-spot aethalometer, AE33, which derives coefficients aerosol particles at 7...
Abstract. Black carbon (BC) aerosol typically has two major sources in the urban environment: traffic and domestic biomass burning, which a significant contribution to air pollution during heating season. Traffic emissions have been widely studied by both laboratory experiments (individual vehicle emission) real-world measurement campaigns (fleet emission). However, emission information from burning is limited, especially an insufficiency of experimental results studies. In this work, black...
Abstract. The geographical origin and source apportionment of submicron carbonaceous aerosols (organic aerosols, OAs, black carbon, BC) have been investigated here for the first time, deploying high time-resolution measurements at an urban background site Nicosia, capital city Cyprus, in eastern Mediterranean. This study covers a half-year period, encompassing both cold warm periods with continuous observations physical chemical properties PM1 performed Aerosol Chemical Speciation Monitor...
Carbonaceous aerosols (CA), composed of black carbon (BC) and organic matter (OM), significantly impact the climate. Light absorption properties CA, particularly BC brown (BrC), are crucial due to their contribution global regional warming. We present (b
The atmospheric concentration of black carbon (BC) has paramount importance worldwide due to its role in global warming and adverse effect on human health. Only limited information is available about BC emission factors from the Arabian/Persian Gulf region despite presence significant sources including petrochemical industry maritime shipping. concentrations BC, nitrogen oxides (NO, NO2), ozone particulate matter (PM10) were monitored at a suburban location central residential Doha, Qatar...
The Camp Fire was one of California's deadliest and most destructive wildfires, its widespread smoke threatened human health over a large area in Northern California November 2018. To analyze the influence on air quality 200 km distant site Berkeley, highly time-resolved total carbon (TC), black (BC), organic (OC) were measured using Carbonaceous Aerosol Speciation System (CASS, Magee Scientific), comprising two instruments, Total Carbon Analyzer TCA08 tandem with an Aethalometer AE33....
Ljubljana has an unfavourable geographical location in the basin, almost entirely surrounded by high hills. Winds basin are often weak and situations with temperature inversion very frequent, therefore, many PM10 daily limit value exceedances were observed 2011. The Directive 2008/50/EC (EU, 2008) requires member states to adjust or provide new air quality plans order comply standards for over-polluted area near future. This is why it necessary action plan pollution reduction Ljubljana....
Light propagation in biological tissues is frequently modeled by the Monte Carlo (MC) method, which requires processing of many photon packets to obtain adequate quality observed backscattered signal. The computation times further increase for detection schemes with small acceptance angles and hence fraction collected packets. In this paper, we investigate use a virtually increased angle efficient MC simulation spatially resolved reflectance estimation optical properties an inverse model. We...