Fig. 3: Relative change in tropospheric ozone (since 1850) and recent trend in tropospheric ozone.
From: Historical total ozone radiative forcing derived from CMIP6 simulations
The relative change in tropospheric ozone (since 1850) in different latitude bands (a–e) and trend in tropospheric ozone 2000 to 2010 compared with the trend 1998 to 2012 in the TOST product5 (f–i). The error bars indicate the 95% confidence intervals for the trend. The tropopause used for the models is the OsloCTM3 tropopause that is based on potential vorticity from the meteorological data generated by the Open IFS model at ECMWF. This definition differs from the one used in TOST, which is based on the WMO definition (2 K km−1 lapse rate) and individual models’ own definition. Models without tropospheric chemistry are indicated with a triangle.
