Boreal–Arctic wetland methane emissions modulated by warming and vegetation activity
In: Nature Climate Change, Jg. 14 (2024-03-01), Heft 3
Online
academicJournal
- 282 - 288
Zugriff:
Wetland methane (CH4) emissions over the Boreal-Arctic region are vulnerable to climate change and linked to climate feedbacks, yet understanding of their long-term dynamics remains uncertain. Here, we upscaled and analysed two decades (2002-2021) of Boreal-Arctic wetland CH4 emissions, representing an unprecedented compilation of eddy covariance and chamber observations. We found a robust increasing trend of CH4 emissions (+8.9%) with strong inter-annual variability. The majority of emission increases occurred in early summer (June and July) and were mainly driven by warming (52.3%) and ecosystem productivity (40.7%). Moreover, a 2 °C temperature anomaly in 2016 led to the highest recorded annual CH4 emissions (22.3 Tg CH4 yr-1) over this region, driven primarily by high emissions over Western Siberian lowlands. However, current-generation models from the Global Carbon Project failed to capture the emission magnitude and trend, and may bias the estimates in future wetland CH4 emission driven by amplified Boreal-Arctic warming and greening.
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Boreal–Arctic wetland methane emissions modulated by warming and vegetation activity
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Autor/in / Beteiligte Person: | Yuan, Kunxiaojia ; Li, Fa ; McNicol, Gavin ; Chen, Min ; Hoyt, Alison ; Knox, Sara ; Riley, William J ; Jackson, Robert ; Zhu, Qing |
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Zeitschrift: | Nature Climate Change, Jg. 14 (2024-03-01), Heft 3 |
Veröffentlichung: | eScholarship, University of California, 2024 |
Medientyp: | academicJournal |
Umfang: | 282 - 288 |
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