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Nat Commun

Title:		Environmental conditions regulate the impact of plants on cloud formation
Author(s):		Zhao DF; Buchholz A; Tillmann R; Kleist E; Wu C; Rubach F; Kiendler-Scharr A; Rudich Y; Wildt J; Mentel TF;
Address:		"Institute for Energy and Climate Research, IEK-8: Troposphere, Forschungszentrum Julich, Julich 52425, Germany. Institute of Bio- and Geosciences, IBG-2, Forschungszentrum Julich, Julich 52425, Germany. Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 76100, Israel"
Journal Title:		Nat Commun
Year:		2017
Volume:		20170220
Issue:
Page Number:		14067 -
DOI:		10.1038/ncomms14067
ISSN/ISBN:		2041-1723 (Electronic) 2041-1723 (Linking)
Abstract:		"The terrestrial vegetation emits large amounts of volatile organic compounds (VOC) into the atmosphere, which on oxidation produce secondary organic aerosol (SOA). By acting as cloud condensation nuclei (CCN), SOA influences cloud formation and climate. In a warming climate, changes in environmental factors can cause stresses to plants, inducing changes of the emitted VOC. These can modify particle size and composition. Here we report how induced emissions eventually affect CCN activity of SOA, a key parameter in cloud formation. For boreal forest tree species, insect infestation by aphids causes additional VOC emissions which modifies SOA composition thus hygroscopicity and CCN activity. Moderate heat increases the total amount of constitutive VOC, which has a minor effect on hygroscopicity, but affects CCN activity by increasing the particles' size. The coupling of plant stresses, VOC composition and CCN activity points to an important impact of induced plant emissions on cloud formation and climate"
Keywords:		"Aerosols/chemistry Algorithms Atmosphere/*analysis Climate Models, Theoretical Particle Size Plants/classification/*metabolism Stress, Physiological/physiology Temperature Trees/classification/*growth & development Volatile Organic Compounds/*analysis;"
Notes:		"MedlineZhao, D F Buchholz, A Tillmann, R Kleist, E Wu, C Rubach, F Kiendler-Scharr, A Rudich, Y Wildt, J Mentel, Th F eng Research Support, Non-U.S. Gov't England 2017/02/22 Nat Commun. 2017 Feb 20; 8:14067. doi: 10.1038/ncomms14067"