Title: Atmospheric methane consumption by upland soils in the Western Canadian Arctic and Finnish Lapland (2018–2021)
Citation: Voigt, Carolina; Chevrier-Dion, Charles; Marquis, Charlotte; Nesic, Zoran; Hould Gosselin, Gabriel; Saarela, Taija; Virkkala, Anna-Maria; Bennett, Kathryn A; Marushchak, Maija E; Wilcox, Evan James; Sonnentag, Oliver (2023): Atmospheric methane consumption by upland soils in the Western Canadian Arctic and Finnish Lapland (2018–2021) [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.953120
Study Site: Havikpak Creek and Scotty Creek, Northwest Territories
Purpose: While wetlands are known CH4 emitters, drier arctic and boreal uplands may act as sinks of atmospheric CH4. The scope of the study and this dataset is to improve the spatial and temporal coverage of low CH4 emitting and sites displaying net CH4 uptake across the Arctic. Both datasets are meant as supplement to the published study, where further, detailed information on site conditions and methodology can be found.
Abstract: This dataset includes two data tables of methane (CH4) fluxes measured in Arctic uplands. Dataset 1 contains CH4 fluxes measured at high temporal resolution (hourly fluxes) collected over two snow-free seasons (June–August; 2019, 2021) at Trail Valley Creek, an Arctic tundra site in the Western Canadian Arctic. Fluxes were measured with automated chambers installed in replication of six at three individual landcover vegetation units (Lichen, Shrub, Tussock) within dwarf-shrub dominated tundra. Site meteorological data are provided with the flux data at hourly resolution. Dataset 2 includes campaign-based, manual chamber measurements at sites displaying net CH4 uptake. These manual measurements were conducted during the growing season at typical, well-drained upland sites, which included, besides Trail Valley Creek, three additional sites in the Canadian and European Arctic (Havikpak Creek, Scotty Creek, Kilpisjärvi). Besides CH4 flux observations, dataset 2 contains measured greenhouse gas concentration profiles of CH4, carbon dioxide (CO2) and nitrous oxide (N2O) at 2 cm, 5 cm, 10 cm, and 20 cm soil depths, as well as site meteorological data.
Supplemental Information Summary:
Research:
Further Info: Voigt, Carolina; Virkkala, Anna-Maria; Hould Gosselin, Gabriel; Bennett, Kathryn A; Black, T Andrew; Detto, Matteo; Chevrier-Dion, Charles; Guggenberger, Georg; Hashmi, Wasi; Kohl, Lukas; Kou, Dan; Marquis, Charlotte; Marsh, Philip; Marushchak, Maija E; Nesic, Zoran; Nykänen, Hannu; Saarela, Taija; Sauheitl, Leopold; Walker, Branden; Weiss, Niels; Wilcox, Evan James; Sonnentag, Oliver (2023): Arctic soil methane sink increases with drier conditions and higher ecosystem respiration. Nature Climate Change, https://doi.org/10.1038/s41558-023-01785-3
Status: Complete
Keywords:
methane,
permafrost,
Geographical coordinates: North: 68.92, South: 61.31 East: -52.619 West: -133.53
Bounding Temporal Extent: Start Date: 2018-08-31, End
Date: 2021-09-01
