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Methane emission from pan-Arctic natural wetlands estimated using a process-based model, 1901–2016
https://nipr.repo.nii.ac.jp/records/15913
https://nipr.repo.nii.ac.jp/records/15913670b5b9c-3ebe-478a-aad6-d2d3b049255d
Item type | 学術雑誌論文 / Journal Article(1) | |||||||
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公開日 | 2019-09-30 | |||||||
タイトル | ||||||||
タイトル | Methane emission from pan-Arctic natural wetlands estimated using a process-based model, 1901–2016 | |||||||
タイトル | ||||||||
言語 | en | |||||||
タイトル | Methane emission from pan-Arctic natural wetlands estimated using a process-based model, 1901–2016 | |||||||
言語 | ||||||||
言語 | eng | |||||||
キーワード | ||||||||
言語 | en | |||||||
主題Scheme | Other | |||||||
主題 | Climate change | |||||||
キーワード | ||||||||
言語 | en | |||||||
主題Scheme | Other | |||||||
主題 | Greenhouse gas | |||||||
キーワード | ||||||||
言語 | en | |||||||
主題Scheme | Other | |||||||
主題 | Tundra | |||||||
キーワード | ||||||||
言語 | en | |||||||
主題Scheme | Other | |||||||
主題 | VISIT model | |||||||
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資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
資源タイプ | journal article | |||||||
アクセス権 | ||||||||
アクセス権 | metadata only access | |||||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||||
著者 |
Ito, Akihiko
× Ito, Akihiko
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内容記述タイプ | Abstract | |||||||
内容記述 | The vast pan-Arctic wetlands appear to be a large source of methane (CH4), a potent greenhouse gas. Here, I simulated CH4 emission from pan-Arctic wetlands (above 60°N) over the period 1901–2016 using a process-based biogeochemical model (VISIT), including two different schemes of wetland CH4 production, that was forced by historical atmospheric composition, climate, and land-use conditions. The two schemes simulated mean wetland CH4 emission rates of 10.9 and 11.4 Tg CH4 yr−1 in the 2000s with slightly different spatial source distributions. Both simulations showed clear seasonal cycles of CH4 emission, but the two schemes had different amplitudes and peak months. The schemes differed markedly in their simulated long-term patterns (i.e., a stationary trend and an increasing decadal trend), making it difficult to relate them to global atmospheric trends in a consistent manner. Linear regression analysis clarified the agreements and differences in environmental sensitivity and biological control of CH4 production simulated by the schemes. The time-series of CH4 emission in northern North America, northern Europe, and Siberia showed different patterns of correlation with two major meteorological teleconnection indices. This model-based study implied that the high-latitude CH4 emission accounts for 5–7% of global wetland emission and would play increasingly important roles (e.g., positive feedback) under changing climate. To reduce estimation uncertainties, as demonstrated by the comparison of two schemes, we need further studies for improving biogeochemical models in collaboration with field studies. | |||||||
書誌情報 |
en : Polar Science 巻 21, p. 26-36, 発行日 2019-09 |
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ISSN | ||||||||
収録物識別子タイプ | ISSN | |||||||
収録物識別子 | 18739652 | |||||||
DOI | ||||||||
識別子タイプ | DOI | |||||||
関連識別子 | https://doi.org/10.1016/j.polar.2018.12.001 | |||||||
関連名称 | 10.1016/j.polar.2018.12.001 |