Ozone recovery in the upper stratosphere
Ozone trends before and after 1997 as a function of altitude, determined from multiple satellite measurements including MIPAS. Before 1997 ozone concentrations declined at all altitudes. After 1997, as a consequence of the regulation of ozone depleting substances, the ozone layer has stabilized, and in the upper stratosphere even ozone recovery can be observed.
Ozone trends were analyzed from a composite time series including ozone measurements from SAGE-II, GOMOS, SCIAMACHY, MIPAS, OSIRIS, ACE-FTS, and OMPS. The trend analysis is based on de-seasonalized time series.
For more information see: https://www.atmos-chem-phys.net/17/12533/2017/