Toward understanding the contribution of waterbodies to the methane emissions of a permafrost landscape on a regional scale

• Verfasst von: Kohnert, Katrin [VerfasserIn]
• Verfasst von: Antonova, Sofia [VerfasserIn]
• Titel: Toward understanding the contribution of waterbodies to the methane emissions of a permafrost landscape on a regional scale
• Titelzusatz: a case study from the Mackenzie Delta, Canada
• Verf.angabe: Katrin Kohnert, Bennet Juhls, Sina Muster, Sofia Antonova, Andrei Serafimovich, Stefan Metzger, Jörg Hartmann, Torsten Sachs
• E-Jahr: 2018
• Jahr: 26 April 2018
• Umfang: 14 S.
• Fussnoten: Gesehen am 09.12.2019
• Titel Quelle: Enthalten in: Global change biology
• Ort Quelle: Oxford [u.a.] : Wiley-Blackwell, 1995
• Jahr Quelle: 2018
• Band/Heft Quelle: 24(2018), 9, Seite 3976-3989
• ISSN Quelle: 1365-2486
• DOI: doi:10.1111/gcb.14289
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: airborne eddy-covariance
• Sach-SW: Arctic
• Sach-SW: CH4
• Sach-SW: lakes
• Sach-SW: ponds
• Sach-SW: remote sensing
• Sach-SW: Sentinel-1
• Sach-SW: TerraSAR-X
• K10plus-PPN: 168485475X

Abstract

Waterbodies in the arctic permafrost zone are considered a major source of the greenhouse gas methane (CH4) in addition to CH4 emissions from arctic wetlands. However, the spatio-temporal variability of CH4 fluxes from waterbodies complicates spatial extrapolation of CH4 measurements from single waterbodies. Therefore, their contribution to the CH4 budget of the arctic permafrost zone is not yet well understood. Using the example of two study areas of 1,000 km² each in the Mackenzie Delta, Canada, we approach this issue (i) by analyzing correlations on the landscape scale between numerous waterbodies and CH4 fluxes and (ii) by analyzing the influence of the spatial resolution of CH4 flux data on the detected relationships.