Fig. 7: Modelled sensitivity of OH to anthropogenic pollution.
From: Radiocarbon monoxide indicates increasing atmospheric oxidizing capacity

Displayed are changes in annual-mean OH, vertically integrated between the surface and 500 hPa, averaged over middle and high southern latitudes as indicated. All curves are smoothed with a 5-year symmetric boxcar filter and expressed relative to their 1980–1984 means. Black: base, all-forcings simulation. Colours: Differences in integrated OH between the base and the sensitivity simulations, each with one forcing held constant, relative to the base simulation, in percent. a Southern mid-latitude average (35°S-55°S). b Southern polar-cap average (60°S-90°S).