Tropospheric Ozone 1890 to 2100

A set of simulations to detail the evolution of tropospheric ozone from 1890 to 1990 have been performed. Using the best estimates of ozone precursors emissions (based on the work by van Aardenne et al. (2001)), it was determined that a tropospheric ozone burden increased 71 Tg between 1890 and 1990, an increase of approximately 30%. In addition the surface ozone concentration has considerably increased, especially over highly industrialized regions. This analysis was also extended into the future (2050 and 2100) using the IPCC SREs A2 scenario. Read the full publication (PDF download) or view an animation (ppt download) of the time evolution of the surface ozone increase of the 1890 background. Time slices are shown for 1910, 1930, 1950, 1970, 1990, 2050 and 2100.