caa a22 4500 530098776 20181217030326.0 cr unu---uuuuu 181026e20150128xx s 000 0 eng 10.3929/ethz-b-000109442 doi 10.1038/srep08082 doi (ETHRESEARCH)oai:www.research-collection.ethz.ch:20.500.11850/109442 The relevance of nanoscale biological fragments for ice nucleation in clouds [Elektronische Daten] [Daniel O'Sullivan, Benjamin J. Murray, James F. Ross, Thomas F. Whale, Hannah C. Price, James D. Atkinson, Nsikanabasi S. Umo, Michael E. Webb] Sci Rep Open access ethresearch Most studies of the role of biological entities as atmospheric ice-nucleating particles have focused on relatively rare supermicron particles such as bacterial cells, fungal spores and pollen grains. However, it is not clear that there are sufficient numbers of these particles in the atmosphere to strongly influence clouds. Here we show that the ice-nucleating activity of a fungus from the ubiquitous genus Fusarium is related to the presence of nanometre-scale particles which are far more numerous, and therefore potentially far more important for cloud glaciation than whole intact spores or hyphae. In addition, we quantify the ice-nucleating activity of nano-ice nucleating particles (nano-INPs) washed off pollen and also show that nano-INPs are present in a soil sample. Based on these results, we suggest that there is a reservoir of biological nano-INPs present in the environment which may, for example, become aerosolised in association with fertile soil dust particles. Creative Commons Attribution 4.0 International http://creativecommons.org/licenses/by/4.0 ethresearch Atmospheric science ethresearch Environmental sciences ethresearch O'Sullivan Daniel joint author Murray Benjamin J. joint author Ross James F. joint author Whale Thomas F. joint author Price Hannah C. joint author Atkinson James D. joint author Umo Nsikanabasi S. joint author Webb Michael E. joint author Scientific Reports London : Nature Publishing Group 5, p. 8082 2045-2322 http://hdl.handle.net/20.500.11850/109442 text/html WWW-Backlink auf das Repository (Open access) 1 Journal Article ethresearch ETHRESEARCH 856 40 http://hdl.handle.net/20.500.11850/109442 text/html WWW-Backlink auf das Repository (Open access) ETHRESEARCH 700 1- O'Sullivan Daniel joint author ETHRESEARCH 700 1- Murray Benjamin J. joint author ETHRESEARCH 700 1- Ross James F. joint author ETHRESEARCH 700 1- Whale Thomas F. joint author ETHRESEARCH 700 1- Price Hannah C. joint author ETHRESEARCH 700 1- Atkinson James D. joint author ETHRESEARCH 700 1- Umo Nsikanabasi S. joint author ETHRESEARCH 700 1- Webb Michael E. joint author ETHRESEARCH 773 0- Scientific Reports London : Nature Publishing Group 5, p. 8082 2045-2322 BK010053 XK010053 XK010000 ETHRESEARCH ETHRESEARCH ETHRESEARCH Journal Article Open access