Success of Montreal Protocols interrupts trends in atmospheric circulation driven by ozone depletion

The release of ozone-depleting substances has depleted stratospheric ozone, particularly over Antarctica. The ozone reduction, in turn, has affected many aspects of atmospheric circulation. The Montreal Protocols—a widely successful effort to reduce ozone-depleting substances—should, in theory, counteract these circulation changes. Antara Banerjee and colleagues now use observations and other lines of evidence to show that trends in atmospheric circulation have paused or reversed, and that the implementation of the Montreal Protocols is the most likely explanation.