Fig. 5: Relative merits of NHx and TNO3 controls on various aspects of PM2.5. | npj Climate and Atmospheric Science

Fig. 5: Relative merits of NHx and TNO3 controls on various aspects of PM2.5.

From: Co-benefits of reducing PM2.5 and improving visibility by COVID-19 lockdown in Wuhan

Fig. 5

Aerosol pH (a), mass concentration of [NH4+ + NO3−] (b), proportion of particle nitrate (ε(NO3−)) (c), and PM2.5 mass concentration (d) predicted by ISORROPIA-II model. The simulations are based on the average values, with changes only from NHx or TNO3. The horizontal gray solid line in a identifies the critical pH value of 386.

Back to article page