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

Journal Article · Thu Oct 01 04:00:00 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), Journal Name: Journal of Geophysical Research; (United States) Vol. 97; ISSN JGREA2; ISSN 0148-0227
• Country of Publication: United States
• Language: English

Related Subjects

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