Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

 
 
Presentations including 'Saturno'

PO2: 146

Field intercomparison of absorption measurements at the suburban Demokritos station in Athens

Maria Gini1, Konstantinos Granakis1, Stergios Vratolis1, Evaggelia Diapouli1, Luka Drinovec2,3, Jesús Yus-Díez2, Grisa Močnik2,3, Tobias Hammer4, Thomas Müller5, Robin Lewis Modini6, Jorge Saturno7, Konstantina Vasilatou4, Konstantinos Eleftheriadis1

1Institute of Nuclear and Radiological Sciences & Technology, N.C.S.R. Demokritos, 15341 Athens, Greece; 2Center for Atmospheric Research, University of Nova Gorica, Nova Gorica, 5270, Slovenia; 3Haze Instruments d.o.o., Ljubljana, 1000, Slovenia; 4Department of Chemistry and Biology, Federal Institute of Metrology METAS, 3003 Bern, Switzerland; 5Atmospheric Microphysics Department, Leibniz Institute for Tropospheric Research, Leipzig, 04318, Germany; 6PSI Center for Energy and Environmental Sciences, Paul Scherrer Institute, 5232 Villigen, Switzerland; 7Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany

Several methods for in-situ aerosol absorption measurement exist, including optical light attenuation, photothermal interferometry, photo-acoustic spectroscopy, and extinction-minus-scattering. The STANBC project aims to establish a measurement framework for both the aerosol light absorption coefficient and its conversion to eBC mass concentration, ensuring measurement traceability, consistency, and comparability across different air quality monitoring networks in Europe. This work focuses on the comparison of different techniques for measuring light absorption and black carbon in the field. The campaign took at the at the National Center for Scientific Research “Demokritos” (DEM) monitoring station in Athens, Greece, from 25/09/2023 to 11/10/2023.

Session Details:

Poster Session Tuesday
Time: 02/Sept/2025: 5:15pm-6:45pm · Location: Studium2000 Building5

 
EAC2025_PO2-146_1018_Gini.pdf

PO2: 169

Challenges in interpreting black carbon data from national air quality monitoring in the UK

Krzysztof Ciupek1, David Butterfield1, Gyanesh Singh1, David C. Green2, Anja H. Tremper2, Max Priestman2, Eija Asmi3, Griša Močnik4, Konstantina Vasilatou5, Tobias Hammer5, Thomas Müller6, Joel Corbin7, Alejandro Keller8, Konstantinos Eleftheriadis9, Jorge Saturno10

1Air Quality and Aerosol Metrology Group, National Physical Laboratory, United Kingdom; 2Environment Research Group, Imperial College London, United Kingdom; 3Finnish Meteorological Institute, Finland; 4Department of Environmental Sciences, Jozef Stefan Institute, Slovenia; 5Laboratory Particles and Aerosols, Federal Institute of Metrology METAS, Switzerland; 6Leibniz Institute for Tropospheric Research, Germany; 7Metrology Research Centre, National Research Council Canada, Canada; 8Institute of Aerosol and Sensor Technology, FHNW, Switzerland; 9Institute of Nuclear Technology and Radiation, NCSR Demokritos, Greece; 10Physikalisch-Technische Bundesanstalt, Germany

Various air quality monitoring networks assess black carbon (BC) levels as part of their national policies and provide evidence for effectiveness of the mitigation strategies. However, interpreting BC data encounters several challenges, ranging from instrumentation discrepancies to methodological variations. Examples of such networks are the UK’s Particle Concentration & Numbers (PCN) and Black Carbon (BC) Networks, which has expanded in 2024 from 14 to 26 sites with another seven sites to be installed. We will present an overview of the most recent data from the BC Network data together with highlighting and addressing challenges in their interpretation.

Session Details:

Poster Session Tuesday
Time: 02/Sept/2025: 5:15pm-6:45pm · Location: Studium2000 Building5

 
EAC2025_PO2-169_909_Ciupek.pdf

11:30am - 11:45am
TH2-3: 1

The roadmap to a European standard for aerosol light absorption

Jorge Saturno1, Eija Asmi2, John Backman2, Krzysztof Ciupek3, Joel Corbin4, Luka Drinovec5,6, Konstantinos Eleftheriadis7, Maria Gini7, Tobias Hammer8, Alejandro Keller9, Griša Močnik5,6,10, Thomas Müller11, Andreas Nowak1, Arun Babu Suja11, Konstantina Vasilatou8, Ernest Weingartner9

1Physikalisch-Technische Bundesanstalt, Germany; 2Finnish Meteorological Institute, Helsinki, Finland; 3National Physical Laboratory, Teddington, UK; 4National Research Council, Ottawa, Canada; 5Center for Atmospheric Research, University of Nova Gorica, Nova Gorica, Slovenia; 6Haze Instruments d.o.o., Ljubljana, Slovenia; 7National Centre of Scientific Research “Demokritos”, Attiki, Greece; 8Federal Institute of Metrology METAS, Berne-Wabern, Switzerland; 9Institute for Sensors and Electronics, FHNW, Windisch, Switzerland; 10Jozef Stefan Institute, Ljubljana, Slovenia; 11Department of Atmospheric Microphysics, TROPOS, Leipzig, Germany

We present a roadmap for providing standardised BC measurements, which follows a top-down approach, beginning with SI-traceable measurements of the aerosol absorption coefficient (babs) using in-situ reference methods with a target measurement uncertainty of ≤ 10 % (coverage factor k=2). Two measurement workshops have been successfully conducted, providing essential data to achieve the research goals: 1) two primary reference methods for aerosol light absorption have been tested and validated; these include photo-thermal interferometry and extinction-minus-scattering for at least two different wavelengths. 2) MACBC has been determined for different aerosol mixtures including bare BC, coated BC and externally mixed BC.

Session Details:

WG3: Optical aerosol measurement techniques
Time: 04/Sept/2025: 11:30am-12:30pm · Location: Room Caravaggio

 
EAC2025_TH2-3-1_873_Saturno.pdf

4:00pm - 4:15pm
TH4-5: 5

Performance of Portable Emissions Measurement Systems (PEMS) in Chassis Dynamometers and On-Road Tests for Vehicle Exhaust Particle Quantification

Mohsen Kazemimanesh1, Jorge Saturno2, Kim Winther3, Rasmus Pettinen4

1National Physical Laboratory (NPL), Teddington, United Kingdom; 2Physikalisch-Technische Bundesanstalt, Braunschweig, Germany; 3Danish Technological Institute, Aarhus, Denmark; 4VTT Technical Research Centre of Finland, Espoo, Finland

Ultrafine particles (UFP) and gaseous pollutants emitted from vehicle exhausts are major contributors to air pollution in urban areas. In the EU, the number of solid exhaust particles is regulated for on-road type approval of vehicles by testing real driving emissions (RDE) using portable emissions measurement systems (PEMS). However, compared to reference instruments used in laboratory testing, PEMS have larger measurement uncertainty due to simpler design, while metrological validation of PEMS is currently lacking. This work studied the performance and uncertainty of PEMS in laboratory and RDE test to underpin the current and future conformity factors.

Session Details:

WG1: Aerosol emissions from gasoline and diesel combustion engines
Time: 04/Sept/2025: 3:00pm-4:30pm · Location: Room Donatello

 
EAC2025_TH4-5-5_825_Kazemimanesh.pdf

PO3: 7

Review of the mass absorption cross-section literature for mixed atmospheric black carbon

Eija Asmi1, Joel Corbin2, John Backman1, Konstantina Vasilatou3, Ernest Weingartner4, Krzysztof Ciupek5, Thomas Müller6, Arun Babu Suja6, Griša Močnik7,8,9, Luka Drinovec7,8, Kostas Eleftheriadis10, Jorge Saturno11

1Finnish Meteorological Institute, Finland; 2Metrology Research Centre, National Research Council Canada, Ottawa, Canada; 3Laboratory Particles and Aerosols, Federal Institute of Metrology METAS, Bern, 3003, Switzerland; 4University of Applied Sciences and Arts Northwestern Switzerland, CH-5210 Windisch, Switzerland; 5Air Quality and Aerosol Metrology Group, National Physical Laboratory, Teddington, TW11 0LW, UK; 6Atmospheric Microphysics Department, Leibniz Institute for Tropospheric Research, 04318 Leipzig, Germany; 7Center for Atmospheric Research, University of Nova Gorica, Nova Gorica, 5270, Slovenia; 8Haze Instruments d.o.o., Ljubljana, 1000, Slovenia; 9Department of Environmental Sciences, Jozef Stefan Institute, Ljubljana, 1000, Slovenia; 10Institute of Nuclear Technology and Radiation, NCSR Demokritos, Paraskevi, Attiki, 15310, Greece; 11Physikalisch-Technische Bundesanstalt, 38116 Braunschweig, Germany

We compile more than 200 MACBC values from 63 studies and explore the effects of sampling location, study duration, instrumentation (photometers, photoacoustic; mass concentration (CBC) from thermal-optical analysis, or SP2), measurement wavelength, thermal–optical protocol. The data show that photoacoustic measurements of MACBC were consistently higher in remote relative to urban environments, indicating Eabs>1 in remote environments, as expected. This trend was not evident for filter-based measurements, and few other clear trends could be identified in general. Notably, wavelength-dependent trends were not evident. Our results do not support the use of simplistic generalizations or assumptions about MACBC in the atmosphere.

Session Details:

Poster Session Thursday
Time: 04/Sept/2025: 5:15pm-6:45pm · Location: Studium2000 Building5

 
EAC2025_PO3-7_1007_Asmi.pdf