The seasonal evolution of NMHCs and light alkyl nitrates at middle to high northern latitudes during TOPSE - Blake, NJ; Blake, DR; Sive, BC; Katzenstein, AS; Meinardi, S; Wingenter, OW; Atlas, EL; Flocke, F; Ridley, BA; Rowland, FS (eScholarship, University of California, 2003)