Air temperature and precipitation constraining the modelled wetland methane emissions in a boreal region in northern Europe
<p>Wetland methane responses to temperature and precipitation are studied in a boreal wetland-rich region in northern Europe using ecosystem process models. Six ecosystem models (JSBACH-HIMMELI, LPX-Bern, LPJ-GUESS, JULES, CLM4.5, and CLM5) are compared to multi-model means of ecosystem models...
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Copernicus Publications
2025-01-01
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| Series: | Biogeosciences |
| Online Access: | https://bg.copernicus.org/articles/22/323/2025/bg-22-323-2025.pdf |
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| author | T. Aalto A. Tsuruta J. Mäkelä J. Müller J. Müller M. Tenkanen E. Burke S. Chadburn Y. Gao V. Mannisenaho T. Kleinen H. Lee H. Lee A. Leppänen T. Markkanen S. Materia P. A. Miller D. Peano O. Peltola B. Poulter M. Raivonen M. Saunois D. Wårlind S. Zaehle |
| author_facet | T. Aalto A. Tsuruta J. Mäkelä J. Müller J. Müller M. Tenkanen E. Burke S. Chadburn Y. Gao V. Mannisenaho T. Kleinen H. Lee H. Lee A. Leppänen T. Markkanen S. Materia P. A. Miller D. Peano O. Peltola B. Poulter M. Raivonen M. Saunois D. Wårlind S. Zaehle |
| author_sort | T. Aalto |
| collection | DOAJ |
| description | <p>Wetland methane responses to temperature and precipitation are studied in a boreal wetland-rich region in northern Europe using ecosystem process models. Six ecosystem models (JSBACH-HIMMELI, LPX-Bern, LPJ-GUESS, JULES, CLM4.5, and CLM5) are compared to multi-model means of ecosystem models and atmospheric inversions from the Global Carbon Project and upscaled eddy covariance flux results for their temperature and precipitation responses and seasonal cycles of the regional fluxes. Two models with contrasting response patterns, LPX-Bern and JSBACH-HIMMELI, are used as priors in atmospheric inversions with Carbon Tracker Europe–CH4 (CTE-CH4) in order to find out how the assimilation of atmospheric concentration data changes the flux estimates and how this alters the interpretation of the flux responses to temperature and precipitation. Inversion moves wetland emissions of both models towards co-limitation by temperature and precipitation. Between 2000 and 2018, periods of high temperature and/or high precipitation often resulted in increased emissions. However, the dry summer of 2018 did not result in increased emissions despite the high temperatures. The process models show strong temperature and strong precipitation responses for the region (51 %–91 % of the variance explained by both). The month with the highest emissions varies from May to September among the models. However, multi-model means, inversions, and upscaled eddy<span id="page324"/> covariance flux observations agree on the month of maximum emissions and are co-limited by temperature and precipitation. The setup of different emission components (peatland emissions, mineral land fluxes) has an important role in building up the response patterns. Considering the significant differences among the models, it is essential to pay more attention to the regional representation of wet and dry mineral soils and periodic flooding which contribute to the seasonality and magnitude of methane fluxes. The realistic representation of temperature dependence of the peat soil fluxes is also important. Furthermore, it is important to use process-based descriptions for both mineral and peat soil fluxes to simulate the flux responses to climate drivers.</p> |
| format | Article |
| id | doaj-art-eb505bbb400743fbb37b81babe2949b6 |
| institution | Kabale University |
| issn | 1726-4170 1726-4189 |
| language | English |
| publishDate | 2025-01-01 |
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| series | Biogeosciences |
| spelling | doaj-art-eb505bbb400743fbb37b81babe2949b62025-01-16T09:28:33ZengCopernicus PublicationsBiogeosciences1726-41701726-41892025-01-012232334010.5194/bg-22-323-2025Air temperature and precipitation constraining the modelled wetland methane emissions in a boreal region in northern EuropeT. Aalto0A. Tsuruta1J. Mäkelä2J. Müller3J. Müller4M. Tenkanen5E. Burke6S. Chadburn7Y. Gao8V. Mannisenaho9T. Kleinen10H. Lee11H. Lee12A. Leppänen13T. Markkanen14S. Materia15P. A. Miller16D. Peano17O. Peltola18B. Poulter19M. Raivonen20M. Saunois21D. Wårlind22S. Zaehle23Finnish Meteorological Institute, Helsinki, 00560, FinlandFinnish Meteorological Institute, Helsinki, 00560, FinlandCSC Centre of Scientific Computing, Espoo, FinlandClimate and Environmental Physics, Physics Institute, University of Bern, Bern, SwitzerlandOeschger Centre for Climate Change Research, University of Bern, Bern, SwitzerlandFinnish Meteorological Institute, Helsinki, 00560, FinlandMet Office Hadley Centre, Exeter, UKUniversity of Exeter, Exeter, UKFinnish Meteorological Institute, Helsinki, 00560, FinlandFinnish Meteorological Institute, Helsinki, 00560, FinlandMax-Planck-Institute for Meteorology, Hamburg, GermanyNORCE Norwegian Research Centre AS, Bjerknes Centre for Climate Research, Bergen, NorwayDepartment of Biology, Norwegian University of Science and Technology, Trondheim, NorwayCSC Centre of Scientific Computing, Espoo, FinlandFinnish Meteorological Institute, Helsinki, 00560, FinlandFondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici, CSP, Bologna, ItalyDepartment of Physical Geography and Ecosystem Science, Faculty of Science, Lund University, Lund, SwedenFondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici, CSP, Bologna, ItalyNatural Resources Institute Finland (Luke), Latokartanonkaari 9, Helsinki, 00790, FinlandNASA GSFC, Earth Sciences Division, Biospheric Sciences Laboratory, Greenbelt, MD, USAInstitute for Atmospheric and Earth System Research (INAR)/Physics, Faculty of Science, University of Helsinki, P.O. Box 68, 00014 Helsinki, FinlandLaboratoire des Sciences du Climat et de l'Environnement, LSCE-IPSL (CEA-CNRS-UVSQ), Université Paris-Saclay, Paris, FranceDepartment of Physical Geography and Ecosystem Science, Faculty of Science, Lund University, Lund, SwedenMax-Planck-Institute for Biogeochemistry, Jena, Germany<p>Wetland methane responses to temperature and precipitation are studied in a boreal wetland-rich region in northern Europe using ecosystem process models. Six ecosystem models (JSBACH-HIMMELI, LPX-Bern, LPJ-GUESS, JULES, CLM4.5, and CLM5) are compared to multi-model means of ecosystem models and atmospheric inversions from the Global Carbon Project and upscaled eddy covariance flux results for their temperature and precipitation responses and seasonal cycles of the regional fluxes. Two models with contrasting response patterns, LPX-Bern and JSBACH-HIMMELI, are used as priors in atmospheric inversions with Carbon Tracker Europe–CH4 (CTE-CH4) in order to find out how the assimilation of atmospheric concentration data changes the flux estimates and how this alters the interpretation of the flux responses to temperature and precipitation. Inversion moves wetland emissions of both models towards co-limitation by temperature and precipitation. Between 2000 and 2018, periods of high temperature and/or high precipitation often resulted in increased emissions. However, the dry summer of 2018 did not result in increased emissions despite the high temperatures. The process models show strong temperature and strong precipitation responses for the region (51 %–91 % of the variance explained by both). The month with the highest emissions varies from May to September among the models. However, multi-model means, inversions, and upscaled eddy<span id="page324"/> covariance flux observations agree on the month of maximum emissions and are co-limited by temperature and precipitation. The setup of different emission components (peatland emissions, mineral land fluxes) has an important role in building up the response patterns. Considering the significant differences among the models, it is essential to pay more attention to the regional representation of wet and dry mineral soils and periodic flooding which contribute to the seasonality and magnitude of methane fluxes. The realistic representation of temperature dependence of the peat soil fluxes is also important. Furthermore, it is important to use process-based descriptions for both mineral and peat soil fluxes to simulate the flux responses to climate drivers.</p>https://bg.copernicus.org/articles/22/323/2025/bg-22-323-2025.pdf |
| spellingShingle | T. Aalto A. Tsuruta J. Mäkelä J. Müller J. Müller M. Tenkanen E. Burke S. Chadburn Y. Gao V. Mannisenaho T. Kleinen H. Lee H. Lee A. Leppänen T. Markkanen S. Materia P. A. Miller D. Peano O. Peltola B. Poulter M. Raivonen M. Saunois D. Wårlind S. Zaehle Air temperature and precipitation constraining the modelled wetland methane emissions in a boreal region in northern Europe Biogeosciences |
| title | Air temperature and precipitation constraining the modelled wetland methane emissions in a boreal region in northern Europe |
| title_full | Air temperature and precipitation constraining the modelled wetland methane emissions in a boreal region in northern Europe |
| title_fullStr | Air temperature and precipitation constraining the modelled wetland methane emissions in a boreal region in northern Europe |
| title_full_unstemmed | Air temperature and precipitation constraining the modelled wetland methane emissions in a boreal region in northern Europe |
| title_short | Air temperature and precipitation constraining the modelled wetland methane emissions in a boreal region in northern Europe |
| title_sort | air temperature and precipitation constraining the modelled wetland methane emissions in a boreal region in northern europe |
| url | https://bg.copernicus.org/articles/22/323/2025/bg-22-323-2025.pdf |
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