| タイトル | The atmospheric CH4 increase since the Last Glacial Maximum. II - Interactions with oxidants |
| 著者（英） | Fung, Inez Y.; Thompson, Anne M.; Chappellaz, Jerome A.; Kucsera, T. L. |
| 著者所属（英） | NASA Goddard Space Flight Center; NASA Goddard Inst. for Space Studies; NASA Headquarters |
| 発行日 | 1993-07-01 |
| 言語 | eng |
| 内容記述 | Results of two studies of the effect of changing CH4 fluxes on global tropospheric oxidant levels, O3, OH, and H2O2, performed with a multibox photochemical model, are presented. A sensitivity study is conducted by scaling back CH4, CO, and NO emissions relative to the present-day budget. When the CH4 ice core record is compared to calculated CH4 abundances, corresponding CH4 fluxes for the preindustrial Holocene (PIH) and Last Glacial Maximum (LGM) are fairly well-constrained: 175-225 Tg CH/4/yr for PIH and 100-130 Tg CH4/yr for LGM. Specific scenarios for CH4/CO/NO are selected to represent sources for the PIH and LGM. The CH4 budget is taken from an evaluation of wetlands and other natural sources. |
| NASA分類 | GEOPHYSICS |
| レポートNO | 93A54262 |
| 権利 | Copyright |
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