Journal
ATMOSPHERIC ENVIRONMENT
Volume 129, Issue -, Pages 91-94Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2016.01.027
Keywords
Aerosol; Cloud; Biosphere-atmosphere interaction
Funding
- Swiss National Science Foundation (SNF) [200021_140228]
- Swiss National Science Foundation (SNF) [200021_140228] Funding Source: Swiss National Science Foundation (SNF)
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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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