Natural halogens buffer tropospheric ozone in a changing climate


Nature Climate Change, Published online: 20 January 2020; doi:10.1038/s41558-019-0675-6

An Earth system model estimates that natural halogens, of marine biotic and abiotic origin, remove about 13% of present-day global tropospheric O3. Projections suggest this ratio is stable through 2100, with high spatial heterogeneity, despite increasing natural halogens.