Figure 4
From: Important fossil source contribution to brown carbon in Beijing during winter
Scatter plots of relationship between Abs365 and both fossil and BB/BG source WSOC/WIOC/OC in winter (A–D) and Summer (E–H) (Note: “F” denotes “Fossil”, “BB/BG” denotes “Biomass burning/Biogenic”, “W” denotes “water extract”, “M” denotes “methanol extract”, “MW” denotes difference between methanol and water extracts).
