Model output, source code, and associated files: Modeling of Freshwater and Dissolved Organic Carbon Fluxes from the North Slope of Alaska to the Beaufort Sea, 1980-2023

This dataset contains gridded estimates of total runoff (mm/day); subsurface baseflow runoff (mm/day); total DOC loading (g/m2/day); subsurface DOC loading (g/m2/day); and soil temperature (C) across northern Alaska from a simulation with the Permafrost Water Balance Model (PWBM v4). River discharge (km3/year) and DOC export (Megagrams/year) at 1039 coastal drainage outlets characterize the flux exiting the coast to the Beaufort Sea. These data were generated to allow researchers to advance understanding of the changes unfolding in the Arctic's terrestrial water cycle under the influences of climate warming, hydrological cycle intensification, and permafrost thaw. The dataset will enable researchers to address important questions spanning multiple disciplines. For example, how will rising river flows exported to the coast impact critical zone ecosystems, near-shore ice dynamics, and ocean biogeochemical processes. Spatial resolution is 1x1 km with N=182,722 grid cells spanning the simulation domain, and N=166,483 for the study analysis domain. The simulation was run at an implicit daily time step over the period 1980-2023. Daily air temperature and precipitation from Daymet, and wind speed from ERA5 were used for meteorological forcings. The PWBM hydrological outputs are organized by grid and month in gzipped ASCII text files within each archived tar file. Soil temperature is organized by grid cell and day of year from DOY 205 to DOY 260. No special software is required to work with these data. The package contains spatial domain and river basin information files. These data are most useful for analyses of the spatial and temporal variations in terrestrial hydrology and soil thermal dynamics. A manuscript describing the model simulations and associated analysis has been submitted for publication in Global Biogeochemical Cycles.