Lateral Carbon and Water Chemistry Data from a Small Arctic Coastal Catchment near Churchill, Manitoba, Late Summer 2022

This dataset accompanies the study "Lateral carbon flow in an Arctic coastal catchment in late summer." It includes water chemistry and hydrological data collected in a small coastal catchment near Churchill, Manitoba, Canada (~10 km inland from Hudson Bay). The study focused on surface water and soil pore water sampling between August 12 and September 5, 2022. Parameters measured include pH, dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), particulate organic carbon (POC), SUVA254, spectral slope ratio (SR), stable carbon isotopes (δ¹³C-DIC, δ¹³C-DOC), specific conductivity, temperature, dissolved CO₂, and CH₄. The dataset also includes site coordinates and discharge measurements. The study aimed to assess the influence of a late summer rainfall event on lateral carbon fluxes across different landscape types (headwater peatland and coastal sandy heathland).