Methane emissions from tundra environments in the Yukon-Kuskokwin Delta, Alaska

Journal Article · Thu Oct 01 00:00:00 EDT 1992 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/91JD00610· OSTI ID:6919018

Bartlett, K B; Crill, P M; Sass, R L; Harriss, R C; Dise, N B ^[1]

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1. College of William and Mary, Williamsburg, VA (United States) New Hampshire Univ., Durham (United States) Rice Univ., Houston, TX (United States) Minnesota Univ., Minneapolis (United States)

This paper reports CH[sub 4] flux to the atmosphere from a variety of tundra environments near Bethel, Alaska during the summer months of 1988. Emissions from wet meadow tundra averaged 144 +/- 31 mg/sq m/d and ranged from 15.6 to 426 mg/sq m/d varying with soil moisture and temperature. Flux from the drier upland tundra was about two orders of magnitude lower and averaged 2.3 +/- 1.1 mg/sq m/d. Tundra lakes emit CH4 from the open water surface as well as from fringing aquatic vegetation; the presence of vegetation significantly enhanced flux over open water rates. Calculated diffusive fluxes from open water varied with lake size, the large lakes emitting 3.8 mg/sq m/d and small lakes emitting an average of 77 mg/sq m/d. An updated estimate of global emissions from tundra indicates an annual fluxes of approximately 11 +/- 3 Tg CH[sub 4]. 41 refs.

• OSTI ID: 6919018
• Journal Information: Journal of Geophysical Research; (United States), Vol. 97; ISSN 0148-0227
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ARCTIC REGIONS
MONITORING
HYDROCARBONS
METHANE
ATMOSPHERIC CHEMISTRY
CARBON DIOXIDE
TEMPERATURE EFFECTS
TUNDRA
ALKANES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMISTRY
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLAR REGIONS
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)