The CNAA is a committee of the International Association of Meteorology and Atmospheric Sciences (IAMAS, a constituent association of the IUGG) that is affiliated with IAMAS’s International Commission on Clouds and Precipitation (ICCP).
The 22nd International Conference on Nucleation & Atmospheric Aerosols (ICNAA 2025) to be held from 24-29 August 2025 in Vienna, Austria is one of a series organized by the CNAA, now at ~4 year intervals. This conference is typically held one year following the ICCP’s related International Conference on Clouds and Precipitation.
Current committee members:
| Chair | Country | Terms |
| Markku Kulmala | Finland | 2019-2023, 2023-2025 |
| Secretary | ||
| Katrianne Lehtipalo | Finland | 2021-2023, 2023-2025 |
| Committee Members | ||
| Lin Wang | China | 2017-2023, 2023-2025 |
| Claudia Mohr | Switzerland | 2017-2023, 2023-2025 |
| David Topping | UK | 2017-2023, 2023-2025 |
| Vladimir Zdimal | Czech Republic | 2017-2023, 2023-2025 |
| Marianne Glasius | Denmark | 2017-2023, 2023-2025 |
| Darius Ceburnis | Ireland | 2017-2023, 2023-2025 |
| Jurgita Ovadnavaite | Lithuania | 2017-2023, 2023-2025 |
| Thomas Koop | Germany | 2017-2023, 2023-2025 |
| David Reguera | Spain | 2017-2023, 2023-2025 |
| Annele Virtanen | Finland | 2017-2023, 2023-2025 |
| Nobuyuki Takegawa | Japan | 2023-2025 |
| Katrianne Lehtipalo | Finland | 2023-2025 |
| Paul Winkler | Austria | 2023-2025 |
| Jim Smith | USA | 2023-2025 |
| Neil Donahue | USA | 2023-2025 |
| Yafang Cheng | Germany | 2023-2025 |
| Vijay Kanawade | India | 2023-2025 |
| Zamin Kanji | Switzerland | 2023-2025 |
| Robert McGraw | USA | 2023-2025 |
| Ex Officio (Liaison with ICCP) | ||
| Ottmar Möhler | Germany | |
| Honary Members | ||
| Colin O’Dowd | Ireland | |
| Paul DeMott | USA | |
| Paul Wagner | Austria | |
| Gabor Vali | USA | |
| Markku Kulmala | Finland | |
| Joseph L. Katz | USA |