A two-dimensional calculation including atmospheric carbon dioxide and stratospheric ozone

INCREASED use of fossil fuels1 and deforestation2 have led to enhanced levels of CO2 in the atmosphere with an increase of about 10% since the beginning of this century1. This upward trend is continuing and it has been predicted that the concentration may double in less than 100 years3–5. We describe here a calculation of the subsequent effect of increased CO2 on stratospheric ozone, using a two-dimensional dynamical model of the atmosphere including radiative and photochemical processes.