Extended Data Figure 10: PMF factors from ground-based data in the OS.
From: Oil sands operations as a large source of secondary organic aerosols
PMF factors 1 (biogenic SOA (B-SOA)) and 2 (OS-SOA) from 1 year of ground-based data in the OS production region (monthly 25th to 90th percentiles shown, n = 22,280), indicating that factor 2 (using a collection efficiency of 1) is derived from the oxidation of OS emissions all year long, while factor 1 is from oxidation of biogenic emissions (that is, summer peak only).
