Atmospheric methane sources - Alaskan tundra bogs, an alpine fen, and a subarctic boreal marsh
Methane (CH4) flux measurements from Alaska tundra bogs, an alpine fen, and a subarctic boreal marsh were obtained at field sites ranging from Prudhoe Bay on the coast of the Arctic Ocean to the Alaskan Range south of Fairbanks during August 1984. In the tundra, average CH4 emission rates varied fro...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19860064803 2023-05-15T14:58:38+02:00 Atmospheric methane sources - Alaskan tundra bogs, an alpine fen, and a subarctic boreal marsh Sebacher, D. I. Harriss, R. C. Grice, S. S. Bartlett, K. B. Sebacher, S. M. Unclassified, Unlimited, Publicly available Feb 1, 1986 http://ntrs.nasa.gov/search.jsp?R=19860064803 unknown http://ntrs.nasa.gov/search.jsp?R=19860064803 Accession ID: 86A49541 Copyright Other Sources 45 Tellus, Series B - Chemical and Physical Meteorology; 38; 1-10 1986 ftnasantrs 2012-02-15T16:51:32Z Methane (CH4) flux measurements from Alaska tundra bogs, an alpine fen, and a subarctic boreal marsh were obtained at field sites ranging from Prudhoe Bay on the coast of the Arctic Ocean to the Alaskan Range south of Fairbanks during August 1984. In the tundra, average CH4 emission rates varied from 4.9 mg CH4 per sq m per day (moist tundra) to 119 mg CH4 per sq m per day (waterlogged tundra). Fluxes averaged 40 mg CH4 per sq m per day from wet tussock meadows in the Brooks Range and 289 mg Ch4 per sq m per day from an alpine fen in the Alaskan Range. The boreal marsh had an average CH4 emission rate of 106 mg CH4 per sq m per day. Significant emissions were detected in tundra areas where peat temperatures were as low as 4 C, and permafrost was only 25 cm below the ground surface. Emission rates from the 17 sites sampled were found to be logarithmically related to water levels at the sites. Extrapolation of the data to an estimate of the total annual CH4 emission from all arctic and boreal wetlands suggests that these ecosystems are a major source of atmospheric CH4 and could account for up to 23 percent of global CH4 emissions from wetlands. Other/Unknown Material Arctic Arctic Ocean Brooks Range permafrost Prudhoe Bay Subarctic Tundra Alaska NASA Technical Reports Server (NTRS) Arctic Arctic Ocean Fairbanks |
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NASA Technical Reports Server (NTRS) |
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45 Sebacher, D. I. Harriss, R. C. Grice, S. S. Bartlett, K. B. Sebacher, S. M. Atmospheric methane sources - Alaskan tundra bogs, an alpine fen, and a subarctic boreal marsh |
topic_facet |
45 |
description |
Methane (CH4) flux measurements from Alaska tundra bogs, an alpine fen, and a subarctic boreal marsh were obtained at field sites ranging from Prudhoe Bay on the coast of the Arctic Ocean to the Alaskan Range south of Fairbanks during August 1984. In the tundra, average CH4 emission rates varied from 4.9 mg CH4 per sq m per day (moist tundra) to 119 mg CH4 per sq m per day (waterlogged tundra). Fluxes averaged 40 mg CH4 per sq m per day from wet tussock meadows in the Brooks Range and 289 mg Ch4 per sq m per day from an alpine fen in the Alaskan Range. The boreal marsh had an average CH4 emission rate of 106 mg CH4 per sq m per day. Significant emissions were detected in tundra areas where peat temperatures were as low as 4 C, and permafrost was only 25 cm below the ground surface. Emission rates from the 17 sites sampled were found to be logarithmically related to water levels at the sites. Extrapolation of the data to an estimate of the total annual CH4 emission from all arctic and boreal wetlands suggests that these ecosystems are a major source of atmospheric CH4 and could account for up to 23 percent of global CH4 emissions from wetlands. |
format |
Other/Unknown Material |
author |
Sebacher, D. I. Harriss, R. C. Grice, S. S. Bartlett, K. B. Sebacher, S. M. |
author_facet |
Sebacher, D. I. Harriss, R. C. Grice, S. S. Bartlett, K. B. Sebacher, S. M. |
author_sort |
Sebacher, D. I. |
title |
Atmospheric methane sources - Alaskan tundra bogs, an alpine fen, and a subarctic boreal marsh |
title_short |
Atmospheric methane sources - Alaskan tundra bogs, an alpine fen, and a subarctic boreal marsh |
title_full |
Atmospheric methane sources - Alaskan tundra bogs, an alpine fen, and a subarctic boreal marsh |
title_fullStr |
Atmospheric methane sources - Alaskan tundra bogs, an alpine fen, and a subarctic boreal marsh |
title_full_unstemmed |
Atmospheric methane sources - Alaskan tundra bogs, an alpine fen, and a subarctic boreal marsh |
title_sort |
atmospheric methane sources - alaskan tundra bogs, an alpine fen, and a subarctic boreal marsh |
publishDate |
1986 |
url |
http://ntrs.nasa.gov/search.jsp?R=19860064803 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Arctic Arctic Ocean Fairbanks |
geographic_facet |
Arctic Arctic Ocean Fairbanks |
genre |
Arctic Arctic Ocean Brooks Range permafrost Prudhoe Bay Subarctic Tundra Alaska |
genre_facet |
Arctic Arctic Ocean Brooks Range permafrost Prudhoe Bay Subarctic Tundra Alaska |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19860064803 Accession ID: 86A49541 |
op_rights |
Copyright |
_version_ |
1766330765817151488 |