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gfdl's home page > gfdl on-line bibliography > 1980: Journal of the Atmospheric Sciences, 37(10), 2265-2297
Stratospheric sensitivity to perturbations in ozone and carbon dioxide: Radiative and dynamical response
| Fels, S. B., J. D. Mahlman, M. D. Schwarzkopf, and R. W. Sinclair, 1980: Stratospheric sensitivity to perturbations in ozone and carbon dioxide: Radiative and dynamical response. Journal of the Atmospheric Sciences, 37(10), 2265-2297. |
| Abstract: We have attempted to assess the stratospheric
effects of two different
perturbations: 1) a uniform 50% reduction in ozone; and 2) 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). Supporting the auxilliary calculations using purely radiative models
are also presented. One of these, in which the thermal sensitivity is computed
using the assumption that heating by dynamical processes is unaffected by
changed composition, gives results which generally are in excellent agreement
with those from the GCM. Exceptions to this occur in the ozone reduction
experiment at the tropical tropopause and the tropical mesosphere. The predicted response to the ozone reduction is largest at 50 km 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 50 km, decreasing to zero at the tropopause. The temperature change in the CO2 experiment is remarkably uniform in latitude. |