Non-growing season CH4 fluxes over arctic and boreal environments

Non-growing season CH4 fluxes over boreal and arctic environments using the snowpack diffusion gradient method. This dataset consists of 802 snowpack diffusion gradient measurements made over five different boreal and arctic ecosystems in Canada and Finland: closed-crown coniferous boreal forest, open-crown coniferous boreal forest, erect tundra shrubs, prostrate tundra shrubs and boreal wetlands. Snow and soil data are incorporated into the dataset as environmental variables.