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000020035 084__ $$2WoS$$aEnvironmental Sciences
000020035 1001_ $$0P:(DE-HGF)0$$aLiao, L.$$b0
000020035 245__ $$aMonoterpene pollution episodes in a forest environment: indication of anthropogenic origin and association with aerosol particles
000020035 260__ $$aHelsinki$$bFinnish Zoological and Botanical Publishing Board$$c2011
000020035 300__ $$a288 - 303
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000020035 440_0 $$013062$$aBoreal Environment Research$$v16$$x1239-6095$$y4
000020035 500__ $$3POF3_Assignment on 2016-02-29
000020035 500__ $$aThe Authors wish to thank the Maj and Tor Nessling foundation for financial support (grant no. 2009362), as well as the Academy of Finland (project no. 123731). This work has been partly funded by European Commission 6th Framework programme project EUCAARI (contract no. 0368332). The financial support by the Academy of Finland Centre of Excellence program (project no. 1118615) and the Kone Foundation is gratefully acknowledged.
000020035 520__ $$aWe used a monoterpene volume mixing ratio dataset measured from 12 June 2006 to 24 September 2007 and from 1 June 2008 to 3 March 2009 at the SMEAR II station to quantify the magnitude of anthropogenic monoterpene emissions aside from biogenic origins, to examine the anthropogenic sources, and to look at other associated pollutants. We discuss the relations between increased monoterpene mixing ratios and particle concentrations. We also characterize chemical properties of aerosol particles during two monoterpene pollution episodes in case studies. Out of 580 days analyzed, anthropogenic monoterpene pollution episodes were found on 341 (58.8%) days. The average monoterpene mixing ratio increased from 0.19 to 0.26 ppbv due to the presence of anthropogenic monoterpenes, which is equal to an increase of 36.8%. The observed anthropogenic monoterpenes were mostly from the Korkeakoski sawmill. Other gas pollutants might occasionally be emitted during the episodes, but did not show clear association with anthropogenic monoterpenes. Aerosol particle concentrations substantially increased during episodes, and monoterpene mixing ratios showed strong connections with Aitken mode particles both in number and volume concentrations. Particles associated with monoterpene episodes reached a CCN (cloud concentration nucleus) size. The chemical characterizations of aerosol particles in case studies show that the increase in aerosol particle mass was mainly from secondary organic aerosol.
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000020035 7001_ $$0P:(DE-Juel1)VDB104948$$adal Maso, M.$$b1$$uFZJ
000020035 7001_ $$0P:(DE-Juel1)VDB104949$$aTaipale, R.$$b2$$uFZJ
000020035 7001_ $$0P:(DE-HGF)0$$aRinne, J.$$b3
000020035 7001_ $$0P:(DE-Juel1)144056$$aEhn, M.$$b4$$uFZJ
000020035 7001_ $$0P:(DE-HGF)0$$aJunninen, H.$$b5
000020035 7001_ $$0P:(DE-HGF)0$$aÄijälä, M.$$b6
000020035 7001_ $$0P:(DE-HGF)0$$aNieminen, T.$$b7
000020035 7001_ $$0P:(DE-HGF)0$$aAlekseychik, P.$$b8
000020035 7001_ $$0P:(DE-HGF)0$$aHulkkonen, M.$$b9
000020035 7001_ $$0P:(DE-HGF)0$$aWorsnop, D.R.$$b10
000020035 7001_ $$0P:(DE-HGF)0$$aKerminen, V.-M.$$b11
000020035 7001_ $$0P:(DE-HGF)0$$aKulmala, M.$$b12
000020035 773__ $$0PERI:(DE-600)2115895-2$$gVol. 16, p. 288 - 303$$p288 - 303$$q16<288 - 303$$tBoreal environment research$$v16$$x1239-6095$$y2011
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