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Journal Article

Infrequent new particle formation over the remote boreal forest of Siberia

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Wiedensohler, A., Ma, N., Birmili, W., Heintzenberg, J., Ditas, F., Andreae, M. O., et al. (2019). Infrequent new particle formation over the remote boreal forest of Siberia. Atmospheric Environment, 200, 167-169. doi:10.1016/j.atmosenv.2018.12.013.

Cite as: https://hdl.handle.net/21.11116/0000-0002-BAB7-E
Aerosol particle number size distributions (PNSD) were investigated to verify, if extremely low-volatility organic vapors (ELVOC) from natural sources alone could
induce new particle formation and growth events over the remote boreal forest region of Siberia, hundreds of kilometers away from significant anthropogenic
sources. We re-evaluated observations determined at a height of 300m of the remote observatory ZOTTO (Zotino Tall Tower Observatory, http://www.zottoproject.
org). We found that new particle formation events occurred only on 11 days in a 3-year period, suggesting that homogeneous nucleation with a subsequent
condensational growth could not be the major process, maintaining the particle number concentration in the planetary boundary layer of the remote boreal forest
area of Siberia.