“…Several studies report that particles in the nucleation range are emitted from aircraft engines (e.g. Anderson et al, 2005;Herndon et al, 2008;Kinsey et al, 2010;Mazaheri et al, 2009Mazaheri et al, , 2013Masiol and Harrison, 2014;Lobo et al, 2015Lobo et al, , 2012 as well as from other anthropogenic (e.g. Schneider et al, 2005;Chen et al, 2011;Cheung et al, 2012;Stevens et al, 2012;Kumar et al, 2013Kumar et al, , 2014Vu et al, 2015b) and natural (e.g.…”