Stergios Vratolis
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View article: Implementation of real-time source apportionment approaches using the ACSM–Xact–Aethalometer (AXA) setup with SoFi RT: the Athens case study
Implementation of real-time source apportionment approaches using the ACSM–Xact–Aethalometer (AXA) setup with SoFi RT: the Athens case study Open
Air pollution, particularly from particulate matter (PM), poses serious public health and environmental risks, especially in urban areas. To address this, accurate source apportionment (SA) of PM is essential for effective air quality mana…
View article: Airborne Microorganisms at Hellenic Atmospheric Aerosol and Climate Change Station in Helmos Mountain (Greece)
Airborne Microorganisms at Hellenic Atmospheric Aerosol and Climate Change Station in Helmos Mountain (Greece) Open
Cultural-based methods of bacteria and fungi and molecular identification of bacteria were combined with parallel continuous measurements of aerosol chemical composition, number size distribution, ice-nucleating concentration, and fluoresc…
View article: On the drivers of ice nucleating particle diurnal variability in Eastern Mediterranean clouds
On the drivers of ice nucleating particle diurnal variability in Eastern Mediterranean clouds Open
We report the drivers of spatiotemporal variability of ice nucleating particles (INPs) for mixed-phase orographic clouds (~−25 °C) in the Eastern Mediterranean. In the planetary boundary layer, pronounced INP diurnal periodicity is observe…
View article: Real-Time Source Apportionment with ACSM-Xact-Aethalometer (AXA) and SoFi RT
Real-Time Source Apportionment with ACSM-Xact-Aethalometer (AXA) and SoFi RT Open
Particulate matter (PM) air pollution poses a significant threat to public health and the environment, particularly in urban areas. To mitigate these impacts, understanding the sources of PM through accurate source apportionment (SA) is es…
View article: Characterization of brown carbon absorption in different European environments through source contribution analysis
Characterization of brown carbon absorption in different European environments through source contribution analysis Open
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 is uncertain due to limited knowledge of its imaginary refractive index…
View article: Implementation of Real-Time Source Apportionment Approaches Using the ACSM-Xact-Aethalometer (AXA) Set-Up with SoFi RT: The Athens Case Study
Implementation of Real-Time Source Apportionment Approaches Using the ACSM-Xact-Aethalometer (AXA) Set-Up with SoFi RT: The Athens Case Study Open
Air pollution, particularly from particulate matter (PM), poses serious public health and environmental risks, especially in urban areas. To address this, accurate source apportionment (SA) of PM is essential for effective air quality mana…
View article: A European aerosol phenomenology – 9: Light absorption properties of carbonaceous aerosol particles across surface Europe
A European aerosol phenomenology – 9: Light absorption properties of carbonaceous aerosol particles across surface Europe Open
Carbonaceous aerosols (CA), composed of black carbon (BC) and organic aerosols (OA), exert an important role on the climate system through their interaction with solar radiation. Light absorption properties of CA particles are of special i…
View article: Biological and dust aerosols as sources of ice-nucleating particles in the eastern Mediterranean: source apportionment, atmospheric processing and parameterization
Biological and dust aerosols as sources of ice-nucleating particles in the eastern Mediterranean: source apportionment, atmospheric processing and parameterization Open
Aerosol–cloud interactions in mixed-phase clouds (MPCs) are one of the most uncertain drivers of the hydrological cycle and climate change. A synergy of in situ, remote-sensing and modelling experiments were used to determine the source of…
View article: Drivers of droplet formation in east Mediterranean orographic clouds
Drivers of droplet formation in east Mediterranean orographic clouds Open
The purpose of this study is to understand the drivers of cloud droplet formation in orographic clouds. We used a combination of modeling, in situ, and remote sensing measurements at the high-altitude Helmos Hellenic Atmospheric Aerosol an…
View article: Corrigendum: Towards reliable retrievals of cloud droplet number for non-precipitating planetary boundary layer clouds and their susceptibility to aerosol
Corrigendum: Towards reliable retrievals of cloud droplet number for non-precipitating planetary boundary layer clouds and their susceptibility to aerosol Open
Corrigendum: Towards reliable retrievals of cloud droplet number for non-precipitating planetary boundary layer clouds and their susceptibility to aerosol
View article: Characterization of Brown Carbon absorption in different European environments through source contribution analysis
Characterization of Brown Carbon absorption in different European environments through source contribution analysis Open
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 is uncertain due to limited knowledge of its imaginary refractive inde…
View article: Comment on egusphere-2024-511
Comment on egusphere-2024-511 Open
Abstract. Aerosol-cloud interactions in mixed-phase clouds (MPCs) are one of the most uncertain drivers of the hydrological cycle and climate change. A synergy of in-situ, remote sensing and modelling experiments was used to determine the …
View article: Comment on egusphere-2024-511
Comment on egusphere-2024-511 Open
Abstract. Aerosol-cloud interactions in mixed-phase clouds (MPCs) are one of the most uncertain drivers of the hydrological cycle and climate change. A synergy of in-situ, remote sensing and modelling experiments was used to determine the …
View article: Diurnal cycle of bioaerosols is a key driver of ice nucleating particle variability for Eastern Mediterranean orographic clouds
Diurnal cycle of bioaerosols is a key driver of ice nucleating particle variability for Eastern Mediterranean orographic clouds Open
We report the drivers of diurnal cycles of ice nucleating particles (INPs) for mixed-phase orographic clouds in the Eastern Mediterranean. In the planetary boundary layer, pronounced INP diurnal periodicity is observed, which is mainly dri…
View article: Supplementary material to "Drivers of Droplet Formation in East Mediterranean Orographic Clouds"
Supplementary material to "Drivers of Droplet Formation in East Mediterranean Orographic Clouds" Open
Figure S1 presents the averaged lognormal droplet size distribution for clouds with liquid water content greater than 0.1 g m -3 , based on Tables 1 and 2 of Miles et al. (2000) and using the grouping as defined by these authors.It is obvi…
View article: Drivers of Droplet Formation in East Mediterranean Orographic Clouds
Drivers of Droplet Formation in East Mediterranean Orographic Clouds Open
The purpose of this study is to understand the drivers of cloud droplet formation in orographic clouds. We used a combination of modeling, in-situ and remote sensing measurements at the high-altitude Helmos Hellenic Atmospheric Aerosol and…
View article: Mass absorption cross section of black carbon for Aethalometer in the Arctic
Mass absorption cross section of black carbon for Aethalometer in the Arctic Open
Long-term measurements of the mass concentration of black carbon (BC) in the atmosphere (MBC) with well-constrained accuracy are indispensable to quantify its emission, transport, and deposition. The aerosol light absorption coefficient (b…
View article: Source apportionment and parameterization of ice nucleating particles observed at a high-altitude station in the north-eastern Mediterranean in autumn 2021 during the CALISHTO campaign
Source apportionment and parameterization of ice nucleating particles observed at a high-altitude station in the north-eastern Mediterranean in autumn 2021 during the CALISHTO campaign Open
Aerosol source apportionment improves the understanding of aerosol-cloud interaction processes and benefits the parameterization of ice nucleating particles (INPs), which also contributes to the predictability of climate models for quantif…
View article: Recommendations for reporting equivalent black carbon (eBC) mass concentrations based on long-term pan-European in-situ observations
Recommendations for reporting equivalent black carbon (eBC) mass concentrations based on long-term pan-European in-situ observations Open
A reliable determination of equivalent black carbon (eBC) mass concentrations derived from filter absorption photometers (FAPs) measurements depends on the appropriate quantification of the mass absorption cross-section (MAC) for convertin…
View article: Biological and dust aerosol as sources of ice nucleating particles in the Eastern Mediterranean: source apportionment, atmospheric processing and parameterization
Biological and dust aerosol as sources of ice nucleating particles in the Eastern Mediterranean: source apportionment, atmospheric processing and parameterization Open
Aerosol-cloud interactions in mixed-phase clouds (MPCs) are one of the most uncertain drivers of the hydrological cycle and climate change. A synergy of in-situ, remote sensing and modelling experiments was used to determine the source of …
View article: Optical and Microphysical Properties of the Aerosols during a Rare Event of Biomass-Burning Mixed with Polluted Dust
Optical and Microphysical Properties of the Aerosols during a Rare Event of Biomass-Burning Mixed with Polluted Dust Open
A rare event of mixed biomass-burning and polluted dust aerosols was observed over Athens, Greece (37.9° N, 23.6° E), during 21–26 May 2014. This event was studied using a synergy of a 6-wavelength elastic-Raman-depolarization lidar measur…