Modeling of Freshwater and Dissolved Organic Carbon Fluxes from the North Slope of Alaska to the Beaufort Sea, 1980-2023

This archive contains for modeled estimates of freshwater discharge and dissolved organic carbon (DOC) export from the North Slope of Alaska to the Beaufort Sea from 1980–2023. Model simulations were run over a spatial domain encompassing northern Alaska and extreme western Canada consisting of 182,722 EASE-Grid 2.0 North grid cells, with 166,483 cells defined as the Alaska drainage basin analysis domain. Output variables include total runoff, subsurface runoff (baseflow), dissolved organic carbon (DOC) total mass loading, subsurface DOC loading, soil temperature, routed discharge at coastal drainage outlets, and DOC export at coastal drainage outlets. Monthly files provide grid-cell runoff and baseflow values (mm/month) with coordinates for each cell, soil temperature files provide daily simulated temperatures for 15 soil layers for days 205–260 of each year, and annual files report basin-level freshwater discharge and DOC export at coastal drainage outlets. Supporting files describe the model domain grid cells, basin identifiers, outlet locations, and associated geographic information for analysis and mapping. Estuary outlet grid cell information (cell ID, latitude, longitude, basin ID) and freshwater and DOC export time series (monthly and daily) are also provided.