Extended Data Fig. 2: Observed and modelled 2020 absolute abundances for chemical species from 30–50° S at 68 hPa.
From: Chlorine activation and enhanced ozone depletion induced by wildfire aerosol
Grey shaded regions show the ranges of 24-h averaged satellite data from the climatologies of satellite observations (in mixing ratio units) before 2020 (daily O3, HCl and ClO from MLS and monthly ClONO2 from ACE) and the grey line shows their averages, whereas black lines show the observed values for 2020. Other coloured lines show model-calculated abundances for the no organics control run (blue line) and for three model test cases: including only N2O5 hydrolysis on the aerosols (dashed brown line), considering the added organic material as a dilution factor (green dashed line) and considering the adopted solubility of HCl in organic acid particles (red line). Corresponding anomalies are shown in Fig. 2.
