Stratospheric response to chemical perturbations
| dc.contributor.author | Brasseur, G. | |
| dc.contributor.author | De Rudder, A. | |
| dc.contributor.author | Tricot, C. | |
| dc.date | 1985 | |
| dc.date.accessioned | 2017-06-27T11:41:19Z | |
| dc.date.available | 2017-06-27T11:41:19Z | |
| dc.identifier.uri | https://orfeo.belnet.be/handle/internal/5865 | |
| dc.description | The paper presents a coupled chemical-radiative one-dimensional model which is used to assess the steady-state and time-dependent composition and temperature changes in relation to the release in the atmosphere of chemicals such as CO2, N2O, CH4, NOx and chlorofluorocarbons. The model indicates that a doubling in CO2 leads to an increase in temperature of 12.7 K near the stratopause and to an increase in total ozone of 3.3% with a local enhancement of 17% at 40 km altitude. Additional release of N2O leads to an ozone reduction in the middle stratosphere. The reduction in the ozone column is predicted to be equal to 8.8% when the amount of N2O is doubled. The chemical effect of CH4 on ozone is particularly important in the troposphere. A doubling in the mixing ratio of this gas enhances the O3 concentration by 11% at 5 km. The predicted increase of the ozone column is equal to 1.4%. A constant emission of CFCl3 (230 kT/yr) and CF2Cl2 (300 kT/yr) leads to a steady-state reduction in the ozone column of 1.9% compared to the present-day situation. The effect of some uncertainties in the chemical scheme as well as the impact of a high chlorine perturbation are briefly discussed. Finally the results of a time dependent calculation assuming a realistic scenario for the emission of chemical species are presented and analyzed. | |
| dc.language | eng | |
| dc.title | Stratospheric response to chemical perturbations | |
| dc.type | Article | |
| dc.subject.frascati | Earth and related Environmental sciences | |
| dc.audience | Scientific | |
| dc.subject.free | carbon dioxide | |
| dc.subject.free | chlorofluorohydrocarbon | |
| dc.subject.free | methane | |
| dc.subject.free | nitrogen oxide | |
| dc.subject.free | ozone | |
| dc.subject.free | air quality | |
| dc.subject.free | nonhuman | |
| dc.subject.free | stratosphere | |
| dc.subject.free | theoretical study | |
| dc.subject.free | chlorofluorocarbons | |
| dc.subject.free | ozone | |
| dc.source.title | Journal of Atmospheric Chemistry | |
| dc.source.volume | 3 | |
| dc.source.issue | 2 | |
| dc.source.page | 261-288 | |
| Orfeo.peerreviewed | Yes | |
| dc.identifier.doi | 10.1007/BF00210500 | |
| dc.identifier.scopus | 2-s2.0-0022264554 |
