Extended Data Fig. 3: Distribution of organic and inorganic mass fraction of different chemical species in NR-PM1 and further fractions of different organic aerosol (OA) factors identified by positive matrix factorization (PMF) analysis.
From: Enhanced aerosol particle growth sustained by high continental chlorine emission in India
The contributions in the form of pie charts are shown for entire campaign, the periods associated with high chloride episode, morning hours (04:00–09:00 am) during the high chloride episode (when partitioning to the particle phase is favourable), and the low chloride days. The left and right panels indicated the fractions for Delhi and Chennai, respectively. The identified primary OA (POA) factors include hydrocarbon-like OA (HOA), biomass burning OA (BBOA), and cooking OA (COA; Delhi only). The identified oxygenated OA (OOA) factors are oxidized primary OA (OPOA; Delhi only), less-oxidized oxygenated OA (LO-OOA; Chennai only), and more oxidized oxygenated OA (MO-OOA). The individual mass fractions (in %) and total NR-PM1 mass is marked in the respective panels.
