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Modeled Microbial D...
Modeled Microbial Dynamics Explain the Apparent Temperature Sensitivity of Wetland Methane Emissions
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- Chadburn, Sarah E. (författare)
- University of Exeter
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- Aalto, Tuula (författare)
- Finnish Meteorological Institute
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- Aurela, Mika (författare)
- Finnish Meteorological Institute
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- Baldocchi, Dennis (författare)
- University of California, Berkeley
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- Biasi, Christina (författare)
- University of Eastern Finland
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- Boike, Julia (författare)
- Alfred-Wegener Institute, Helmholtz Center for Polar and Marine Research, Bremerhaven,Humboldt University of Berlin,Met Office
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- Burke, Eleanor J. (författare)
- Met Office
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- Comyn-Platt, Edward (författare)
- European Centre for Medium-range Weather Forecasts
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- Dolman, A. Johannes (författare)
- Vrije Universiteit Amsterdam
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- Duran-Rojas, Carolina (författare)
- University of Exeter
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- Fan, Yuanchao (författare)
- Bjerknes Centre for Climate Research,Harvard University
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- Friborg, Thomas (författare)
- University of Copenhagen
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- Gao, Yao (författare)
- Finnish Meteorological Institute
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- Gedney, Nicola (författare)
- Met Office
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- Göckede, Mathias (författare)
- Max Planck Institute for Biogeochemistry
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- Hayman, Garry D. (författare)
- Centre for Ecology & Hydrology, Wallingford
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- Holl, David (författare)
- University of Hamburg
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- Hugelius, Gustaf (författare)
- Stockholms universitet,Stockholm University,Institutionen för naturgeografi
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- Kutzbach, Lars (författare)
- University of Hamburg
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- Lee, Hanna (författare)
- Bjerknes Centre for Climate Research
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- Lohila, Annalea (författare)
- Finnish Meteorological Institute,University of Helsinki
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- Parmentier, Frans Jan W. (författare)
- Lund University,Lunds universitet,MERGE: ModElling the Regional and Global Earth system,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Institutionen för naturgeografi och ekosystemvetenskap,Centre for Environmental and Climate Science (CEC),Faculty of Science,Dept of Physical Geography and Ecosystem Science,University of Oslo
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- Sachs, Torsten (författare)
- GFZ German Research Centre for Geosciences
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- Shurpali, Narasinha J. (författare)
- Natural Resources Institute Finland (Luke)
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- Westermann, Sebastian (författare)
- University of Oslo
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(creator_code:org_t)
- 2020
- 2020
- Engelska.
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Ingår i: Global Biogeochemical Cycles. - 0886-6236 .- 1944-9224. ; 34:11
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Methane emissions from natural wetlands tend to increase with temperature and therefore may lead to a positive feedback under future climate change. However, their temperature response includes confounding factors and appears to differ on different time scales. Observed methane emissions depend strongly on temperature on a seasonal basis, but if the annual mean emissions are compared between sites, there is only a small temperature effect. We hypothesize that microbial dynamics are a major driver of the seasonal cycle and that they can explain this apparent discrepancy. We introduce a relatively simple model of methanogenic growth and dormancy into a wetland methane scheme that is used in an Earth system model. We show that this addition is sufficient to reproduce the observed seasonal dynamics of methane emissions in fully saturated wetland sites, at the same time as reproducing the annual mean emissions. We find that a more complex scheme used in recent Earth system models does not add predictive power. The sites used span a range of climatic conditions, with the majority in high latitudes. The difference in apparent temperature sensitivity seasonally versus spatially cannot be recreated by the non-microbial schemes tested. We therefore conclude that microbial dynamics are a strong candidate to be driving the seasonal cycle of wetland methane emissions. We quantify longer-term temperature sensitivity using this scheme and show that it gives approximately a 12% increase in emissions per degree of warming globally. This is in addition to any hydrological changes, which could also impact future methane emissions.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Naturgeografi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Physical Geography (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Nyckelord
- global modeling
- methane
- methanogens
- microbial modeling
- wetland methane
- methane
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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- Av författaren/redakt...
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Chadburn, Sarah ...
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Aalto, Tuula
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Aurela, Mika
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Baldocchi, Denni ...
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Biasi, Christina
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Boike, Julia
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visa fler...
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Burke, Eleanor J ...
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Comyn-Platt, Edw ...
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Dolman, A. Johan ...
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Duran-Rojas, Car ...
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Fan, Yuanchao
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Friborg, Thomas
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Gao, Yao
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Gedney, Nicola
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Göckede, Mathias
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Hayman, Garry D.
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Holl, David
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Hugelius, Gustaf
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Kutzbach, Lars
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Lee, Hanna
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Lohila, Annalea
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Parmentier, Fran ...
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Sachs, Torsten
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Shurpali, Narasi ...
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Westermann, Seba ...
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NATURVETENSKAP
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