Carbon dioxide, methane, dissolved inorganic carbon concentrations, nitrous oxide concentrations and carbon isotope ratios from five watersheds in southwestern Greenland (2022 and 2023)

This dataset include concentrations of dissolved carbon dioxide (CO2), methane (CH4), dissolved inorganic carbon (DIC), and the carbon-13 composition of these compounds and the nitrous oxide (N2O) concentration in water from five watersheds in southwestern Greenland. The watersheds form a transec extending from the edge of the Greenland Ice Sheet (GrIS) to the coast. Water sampled from these watersheds include supraglacial streams and the weathering crust aquifer at the edge of the GrIS, a proglacial stream that mostly drains glacial meltwater, near ice deglaciated watersheds, and near coast deglaciated watersheds. Samples were collected from one to several sites in each watershed. The data are organized geographically in the spreadsheet from watersheds at the ice edge to the coast and from upstream to downstream where multiple locations were sampled within the watersheds. Samples were collected starting soon after flow began as snow melted in the spring through mid-August over two years (2022 and 2023). The data include various field parameters, major and trace element concentrations, and the oxygen and hydrogen isotopic composition of the water.