Stratospheric sensitivity to perturbations in ozone and carbon dioxide: radiative and dynamical response.

Abstract

We have attempted to assess the stratospheric effects of 2 different perturbations: a uniform 50% reduction in ozone; and a uniform doubling of carbon dioxide. The primary studies employ an annual mean insolation version of the recently developed GFDL 40-level general circulation model (GCM). The predicted response to the ozone reduction is largest at 50km in the tropics, where the temperature decreases by 25 K; at the tropical tropopause, the decrease is 5 K. The carbon dioxide increase results in a 10 K decrease at 50km, decreasing to zero at the tropopause.-from Authors