Extended Data Fig. 3: SLH-driven perturbation of the atmospheric oxidative capacity.
From: Natural short-lived halogens exert an indirect cooling effect on climate
The percentage change in hydroxyl radical (OH) mixing ratios for pre-industrial (a,b) and present-day (c,d) are computed as PI(%) = (Natural−NoSLH)/NoSLH × 100% and PD(%) = (AANE+ANT−NoSLH)/NoSLH × 100%, respectively (see definitions of model simulations in Extended Data Table 1). The annual mean surface OH difference is shown in the left column panels, whereas the annual zonal mean difference is presented on the right panels. Note that even though SLH increase surface OH abundance over the continents (mostly above industrialized regions during present-day), the net effect of SLH on the oxidative capacity is to reduce the global mean OH abundance. All maps and elements were created by our research group using gsn_csm library for NCL.
