期刊
ATMOSPHERIC ENVIRONMENT
卷 129, 期 -, 页码 91-94出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2016.01.027
关键词
Aerosol; Cloud; Biosphere-atmosphere interaction
资金
- Swiss National Science Foundation (SNF) [200021_140228]
- Swiss National Science Foundation (SNF) [200021_140228] Funding Source: Swiss National Science Foundation (SNF)
Decaying leaves from Arctic regions have previously been reported to produce large numbers of ice nucleating particles (IN). Their atmospheric relevance is unclear. Our initial observations at a coastal mountain observatory in northern Norway reveal a tripling in concentrations of IN active at -15 degrees C (IN-15) in oceanic air after about one day of passage over land (from 1.7 and 4.9 IN-15 m(-3), to 9.6 and 12.2 IN-15 m(-3)). Analysis of leaf litter collected near the observatory supports the earlier report of numerous IN associated with leaf litter on the ground (2 . 10(2) IN-5 mu g(-1) litter particles < 5 mu m). Together, both findings suggest that decaying leaves are a strong emission source of IN to the Arctic boundary layer. (C) 2016 The Authors. Published by Elsevier Ltd.
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