| タイトル | Global average concentration and trend for hydroxyl radicals deduced from ALE/GAGE trichloroethane (methyl chloroform) data for 1978-1990 |
| 著者（英） | Rosen, R.; Hartley, D.; Boldi, R.; Alyea, F.; Prinn, R.; Simmonds, P.; Fraser, P.; Gutzler, D.; Crawford, A.; Cunnold, D. |
| 著者所属（英） | NASA Headquarters |
| 発行日 | 1992-02-20 |
| 言語 | eng |
| 内容記述 | An optimal estimation inversion scheme is utilized with atmospheric data and emission estimates to determined the globally averaged CH3CCl3 tropospheric lifetime and OH concentration. The data are taken from atmospheric measurements from surface stations of 1,1,1-trichloroethane and show an annual increase of 4.4 +/- 0.2 percent. Industrial emission estimates and a small oceanic loss rate are included, and the OH concentration for the same period (1978-1990) are incorporated at 1.0 +/- 0.8 percent/yr. The positive OH trend is consistent with theories regarding OH and ozone trends with respect to land use and global warming. Attention is given to the effects of the ENSO on the CH3CCl3 data and the assumption of continuing current industrial anthropogenic emissions. A novel tropical atmospheric tracer-transport mechanism is noted with respect to the CH3CCl3 data. |
| NASA分類 | GEOPHYSICS |
| レポートNO | 92A26104 |
| 権利 | Copyright |
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