Fig. 6From: Southern Hemisphere mid- and high-latitudinal AOD, CO, NO2, and HCHO: spatiotemporal patterns revealed by satellite observationsTime-series (dotted line) and the linear trend (solid line) of monthly mean deseasonalized anomalies of a AOD at 550 nm, b CO total column density, c NO2 tropospheric column density, and d HCHO tropospheric column density. All measures are for the Southern Hemisphere (30–60° S) from 2005 to 2016Back to article page