Stratospheric O3-CO2 coupling in a photochemical-radiative column model. I: Without chlorine chemistry

摘要: It is shown that the inclusion of a chlorine chemistry mechanism, necessitated by present abundances methyl chloride and carbon tetrachloride, reduces modelled natural stratospheric ozone above about 25 km 20 to 40% compared with part I, resulting in substantial agreement observations. The effects simultaneous increases atmospheric mixing ratios dioxide chlorofluoromethanes (CFMs) are investigated. found there alleviation CFM-induced reductions attributable increased CO2, two perturbations upon column density not quite linearly additive. net effect on consists larger percentage decreases upper stratosphere almost compensated smaller lower stratosphere, where most resident.