Premium
Stratospheric O 3 ‐CO 2 coupling in a photochemical‐radiative column model. II: With chlorine chemistry
Author(s) -
Groves K. S.,
Tuck A. F.
Publication year - 1980
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49710644710
Subject(s) - ozone , stratosphere , chlorine , ozone layer , ozone depletion , chemistry , radiative transfer , atmospheric sciences , carbon tetrachloride , atmospheric chemistry , mixing ratio , carbon dioxide , photochemistry , environmental chemistry , physics , organic chemistry , quantum mechanics
It is shown that the inclusion of a chlorine chemistry mechanism, necessitated by present abundances of methyl chloride and carbon tetrachloride, reduces the modelled natural stratospheric ozone above about 25 km by 20 to 40% compared with part I, resulting in substantial agreement with observations. The effects of simultaneous increases in the atmospheric mixing ratios of carbon dioxide and chlorofluoromethanes (CFMs) are investigated. It is found that there is alleviation of the CFM‐induced ozone reductions attributable to increased CO2, and that the effects of the two perturbations upon ozone column density are not quite linearly additive. The net effect on ozone column density consists of larger percentage decreases in the upper stratosphere almost compensated by smaller percentage increases in the lower stratosphere, where most of the ozone is resident.