This dataset contains methane 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.

Further funding awards: NSERC Discovery Grants program (DGPIN-2018-05743 and RGPIN-2022-05347), Atmosphere and Climate Competence Center (ACCC, no. 337550), Northern Water Futures (Global Water Futures, Canada First Research Excellence Fund's Global Water Futures program, doi:10.13039/501100013380), Polar Continental Shelf Program (608-20, 602-21)