NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Methane emissions to the troposphere from the Amazon floodplainThe 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.
Document ID
19880040043
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Devol, Allen H.
(Washington Univ. Seattle, WA, United States)
Richey, Jeffrey E.
(Washington Univ. Seattle, WA, United States)
Clark, Wayne A.
(Washington Univ. Seattle, WA, United States)
King, Stagg L.
(Washington, University Seattle, United States)
Martinelli, Luiz A.
(Centro de Energia Nuclear na Agricultura Piracicaba, Brazil)
Date Acquired
August 13, 2013
Publication Date
February 20, 1988
Publication Information
Publication: Journal of Geophysical Research
Volume: 93
ISSN: 0148-0227
Subject Category
Earth Resources And Remote Sensing
Accession Number
88A27270
Funding Number(s)
CONTRACT_GRANT: NSF BSR-83-16359
CONTRACT_GRANT: NAGW-711
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available