Despite extensive efforts toward the characterization of submicron aerosols at ground level in the megacity of Beijing,our understanding of aerosol sources and processes at high altitudes remains low.
Despite extensive efforts to characterize organic nitrogen(ON)in atmospheric aerosols,knowledge of the sources and processes of ON in the megacity of Beijing is still limited,mainly due to the complex
Cooking organic aerosol(COA)constitutes a considerable fraction of organic aerosol(OA)in urban environments [1-2],yet it is often challenging to resolve COA in summer through positive matrix factoriza