Fig. 6: Effects of simultaneous reductions of NHx and TNO3.
From: Co-benefits of reducing PM2.5 and improving visibility by COVID-19 lockdown in Wuhan
The reduction threshold percentages of NHx and TNO3 corresponding to average PM2.5 mass concentration of 54 μg m−3 predicted by ISORROPIA-II model. The simulations are based on the average values for pre-lockdown period, with proportional changes from NHx and TNO3.
