| タイトル | Methane emissions to the troposphere from the Amazon floodplain |
| 著者（英） | Richey, Jeffrey E.; Clark, Wayne A.; Martinelli, Luiz A.; King, Stagg L.; Devol, Allen H. |
| 著者所属（英） | Washington Univ. |
| 発行日 | 1988-02-20 |
| 言語 | eng |
| 内容記述 | The magnitudes of CH4 emissions to the troposphere from the Amazon River floodplain and the mechanism of these emissions were investigated using the data of 94 individual flux measurements made along a 1700-km stretch of the river during July/August 1985. The overall average rate of CH4 emission from wetlands was found to be 390 mg CH4/sq m per day, with the highest emissions (590 mg CH4/sq m per day) attributed to the water surfaces covered by aquatic macrophytes. Ebullition was the dominant mechanism of emission, accounting for 85 percent of the total. Surface-water CH4 concentrations were highly supersaturated, averaging 6.4 micromolar. The annual emission of CH4 from the Amazon Basin to the troposphere, estimated from the area and the known emission rate, is about 10 CH4 Tg/yr, indicating the importance of the area in the global atmospheric CH4 cycle. |
| NASA分類 | EARTH RESOURCES AND REMOTE SENSING |
| レポートNO | 88A27270 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/372306 |
|
