Fig. 2: 2019 annual mean surface PM2.5 concentrations conditional on BB. | npj Climate and Atmospheric Science

Fig. 2: 2019 annual mean surface PM2.5 concentrations conditional on BB.

From: Changes in atmospheric oxidants teleconnect biomass burning and ammonium nitrate formation

Fig. 2

a PM2.5(BB), the concentration of PM2.5 conditional on BB emissions. b The percentage contribution to total PM2.5 (from all sources) of PM2.5 conditional on BB. c NH4NO3(BB), the concentration of fine NH4NO3 conditional on BB emissions. d The percentage contribution of fine NH4NO3 conditional on BB to PM2.5(BB). The numbers on each panel are the mean values (in the units of the relevant legend) for the black rectangles positioned over high population areas in (A) eastern USA, (B) northwestern Europe, (C) the Indo-Gangetic Plain, and (D) eastern China (see Tables C2 and C3 for details).

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