| タイトル | Tropospheric OH and the lifetimes of hydrochlorofluorocarbons |
| 著者（英） | Prather, Michael; Spivakovsky, Clarisa M. |
| 著者所属（英） | Harvard Univ.|NASA Goddard Inst. for Space Studies |
| 発行日 | 1990-10-20 |
| 言語 | eng |
| 内容記述 | Hydrochlorofluorocarbons (HCFCs) may be used as alternatives for the chlorofluorocarbons (CFCs). Lifetimes for the HCFCs are predicted here in two ways: integrating their loss with a global model and scaling to another compound with a better known lifetime. Both approaches are shown to yield similar results. Three-dimensional fields of modeled tropospheric OH concentrations are used to calculate lifetimes against destruction by OH for the HCFCs and other hydrogenated halocarbons. The lifetimes of various hydro-halocarbons are shown to be insensitive to possible spatial variations and seasonal cycles. It is possible to scale the HCFC lifetimes to that of methyl chloroform or methane by using a ratio of the rate coefficients for reaction with OH at an appropriate temperature, about 277 K. |
| NASA分類 | ENVIRONMENT POLLUTION |
| レポートNO | 91A13135 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/352075 |
