Articles | Volume 16, issue 22
https://doi.org/10.5194/acp-16-14297-2016
https://doi.org/10.5194/acp-16-14297-2016
Research article
 | 
16 Nov 2016
Research article |  | 16 Nov 2016

How do air ions reflect variations in ionising radiation in the lower atmosphere in a boreal forest?

Xuemeng Chen, Veli-Matti Kerminen, Jussi Paatero, Pauli Paasonen, Hanna E. Manninen, Tuomo Nieminen, Tuukka Petäjä, and Markku Kulmala

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Ionising radiation is responsible for air ion production. However, minor efforts have been invested in understanding the connection of observed air ions to ionising radiation in the lower atmosphere and underlying processes therein. In this work, we analysed 4 years of ambient data collected in a Finnish boreal forest and found that gamma radiation dominates air ion production in the lower atmosphere and demonstrated clear promotion effects of the ionising radiation on air ion production.
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