Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
2006-03-01 |
タイトル |
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言語 |
en |
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タイトル |
Micrometeorological measurements of methane flux at a boreal forest in central Alaska |
言語 |
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言語 |
eng |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
boreal forest, methane flux, micrometeorological technique, central Alaska |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
論文名よみ |
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その他のタイトル |
Micrometeorological measurements of methane flux at a boreal forest in central Alaska |
著者名(英) |
Ueyama,Masahito
Harazono,Yoshinobu
Okada,Ryo
Nojiri,Atsushi
Ohtaki,Eiji
Miyata,Akira
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著者所属(英) |
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en |
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International Arctic Research Center, University of Alaska/International Arctic Research Center, University of Alaska/Institution of Geosciences, University of Tsukuba/Graduate School of Natural Science and Technology, Okayama University/Graduate School of Natural Science and Technology, Okayama University/National Institute of Agro-Environmental Sciences |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
Methane (CH_4) flux at a black spruce forest in central Alaska was determined by applying the three types of modified gradient method. One type used the eddy diffusivity obtained by CO_2 flux and CO_2 gradient. Others established the flux gradient relationship assuming Monin-Obukhov similarity. The wind speed and temperature profile functions were corrected for the influence of the roughness sublayer, and then applied to the modified gradient methods. More than 70% of the data were rejected by the strict quality control and a continental climate, such as calm wind. Although the diurnal variations of CH_4 flux by the three methods were different, the seasonal variation showed similar tendency; a weak emission on snowpack, an obvious emission around spring thaw, and CH_4 uptake in the late growing season. As calculated CH_4 flux was in the same range as with previous studies conducted by the chamber measurement. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA00733561 |
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue
巻 59,
p. 156-167,
発行日 2006-03
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