title: Reduced antarctic ozone depletions in a model with hydrocarbon injections.
abstract: Motivated by increased losses of Antarctic stratospheric ozone and by improved understanding of the mechanism, a concept is suggested for action to arrest this ozone loss: injecting the alkanes ethane or propane (E or P) into the Antarctic stratosphere. A numerical model of chemical processes was used to explore the concept. The model results suggest that annual injections of about 50,000 tons of E or P could suppress ozone loss, but there are some scenarios where smaller E or P injections could increase ozone depletion. Further, key uncertainties must be resolved, induding initial concentrations of nitrogen-oxide species in austral spring, and several poorly defined physical and chemical processes must be quantifed. There would also be major difficulties in delivering and distributing the needed alkanes.
authors.forename: R J
authors.initials: RJ
authors.lastname: Cicerone
authors.forename: S
authors.initials: S
authors.lastname: Elliott
authors.forename: R P
authors.initials: RP
authors.lastname: Turco