Articles | Volume 4, issue 1
https://doi.org/10.5194/ar-4-133-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ar-4-133-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
18 Mar 2026
Research article |
| 18 Mar 2026
| 18 Mar 2026
Results and insights from the first ACTRIS intercomparison workshop on sub-10 nm aerosol sizing instrumentation
Herbert G. Hartl
CORRESPONDING AUTHOR
Institute for Atmospheric Earth System Research/Physics, Faculty of Science, University of Helsinki, P.O. Box 64, 00014 Helsinki, Finland
Airmodus Oy., Erik Palmenin aukio 1, 00560 Helsinki, Finland
Aerosol Physics Laboratory, Physics Unit, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 692, 33014 Tampere, Finland
Janne Lampilahti
Institute for Atmospheric Earth System Research/Physics, Faculty of Science, University of Helsinki, P.O. Box 64, 00014 Helsinki, Finland
Rima Baalbaki
Institute for Atmospheric Earth System Research/Physics, Faculty of Science, University of Helsinki, P.O. Box 64, 00014 Helsinki, Finland
Climate and Atmosphere Research Center (CARE-C), The Cyprus Institute, 2121, Nicosia, Cyprus
Lauri Ahonen
Institute for Atmospheric Earth System Research/Physics, Faculty of Science, University of Helsinki, P.O. Box 64, 00014 Helsinki, Finland
Tommy Chan
Institute for Atmospheric Earth System Research/Physics, Faculty of Science, University of Helsinki, P.O. Box 64, 00014 Helsinki, Finland
Tinghang Zhang
Institute for Atmospheric Earth System Research/Physics, Faculty of Science, University of Helsinki, P.O. Box 64, 00014 Helsinki, Finland
Joonas Vanhanen
Airmodus Oy., Erik Palmenin aukio 1, 00560 Helsinki, Finland
Joonas Purén
Airmodus Oy., Erik Palmenin aukio 1, 00560 Helsinki, Finland
Gerhard Steiner
GRIMM Aerosol Technik Ainring GmbH, Vordere Aue 4, 06774 Muldestausee, Germany
Sebastian Schmitt
Institut für Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung (IFA), Alte Heerstraße 111, 53757 Sankt Augustin, Germany
Torsten Tritscher
TSI GmbH, Neuköllner Strasse 4, 52068 Aachen, Germany
Amine Koched
TSI GmbH, Neuköllner Strasse 4, 52068 Aachen, Germany
Manuel Granzin
Institute for Atmospheric and Environmental Sciences, Faculty for Geosciences and Geography, Goethe University, Altenhöferallee 1, 60438 Frankfurt/Main, Germany
Petr Roztocil
Research Group of Aerosol Chemistry and Physics, Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, 165 00, Prague, Czech Republic
Silja Häme
Institute for Atmospheric Earth System Research/Physics, Faculty of Science, University of Helsinki, P.O. Box 64, 00014 Helsinki, Finland
Tuukka Petäjä
Institute for Atmospheric Earth System Research/Physics, Faculty of Science, University of Helsinki, P.O. Box 64, 00014 Helsinki, Finland
Katrianne Lehtipalo
CORRESPONDING AUTHOR
Institute for Atmospheric Earth System Research/Physics, Faculty of Science, University of Helsinki, P.O. Box 64, 00014 Helsinki, Finland
Finnish Meteorological Institute, Atmospheric Composition Research, P.O. Box 503, 00101 Helsinki, Finland
Viewed
Total article views: 879 (including HTML, PDF, and XML)
Cumulative views and downloads
(calculated since 29 Sep 2025)
| HTML | XML | Total | BibTeX | EndNote | |
|---|---|---|---|---|---|
| 559 | 279 | 41 | 879 | 40 | 78 |
- HTML: 559
- PDF: 279
- XML: 41
- Total: 879
- BibTeX: 40
- EndNote: 78
Total article views: 143 (including HTML, PDF, and XML)
Cumulative views and downloads
(calculated since 18 Mar 2026)
| HTML | XML | Total | BibTeX | EndNote | |
|---|---|---|---|---|---|
| 101 | 34 | 8 | 143 | 6 | 4 |
- HTML: 101
- PDF: 34
- XML: 8
- Total: 143
- BibTeX: 6
- EndNote: 4
Total article views: 736 (including HTML, PDF, and XML)
Cumulative views and downloads
(calculated since 29 Sep 2025)
| HTML | XML | Total | BibTeX | EndNote | |
|---|---|---|---|---|---|
| 458 | 245 | 33 | 736 | 34 | 74 |
- HTML: 458
- PDF: 245
- XML: 33
- Total: 736
- BibTeX: 34
- EndNote: 74
Viewed (geographical distribution)
Total article views: 879 (including HTML, PDF, and XML)
Thereof 879 with geography defined
and 0 with unknown origin.
Total article views: 143 (including HTML, PDF, and XML)
Thereof 143 with geography defined
and 0 with unknown origin.
Total article views: 736 (including HTML, PDF, and XML)
Thereof 736 with geography defined
and 0 with unknown origin.
| Country | # | Views | % |
|---|
| Country | # | Views | % |
|---|
| Country | # | Views | % |
|---|
| Total: | 0 |
| HTML: | 0 |
| PDF: | 0 |
| XML: | 0 |
- 1
1
| Total: | 0 |
| HTML: | 0 |
| PDF: | 0 |
| XML: | 0 |
- 1
1
| Total: | 0 |
| HTML: | 0 |
| PDF: | 0 |
| XML: | 0 |
- 1
1
Latest update: 25 Mar 2026
Short summary
Small airborne particles influence how clouds form and how they affect the climate. Our study compared eight different instruments that measure the size distributions of these particles to understand the instruments' strengths and weaknesses. We found that some systems are more accurate, whereas others are more sensitive at tiny sizes. These results will help to improve future monitoring of air quality and climate processes.
Small airborne particles influence how clouds form and how they affect the climate. Our study...
Altmetrics
Final-revised paper
Preprint