Drainage basins and shelf sea areas in the Arctic

Arctic shelf seas within the Arctic Ocean and surrounding the Arctic Ocean were combined from Jakobsson (2002) and IHO (1953) to account for the whole marine area of the Arctic Ocean according to the IHO definition that receives terrestrial riverine drainage. The seaward border of the shelf is defined as the break in topograhy (bathymetry) of the seafloor according to Jakobsson (2002).

Terrestrial drainage basins from the pan-Arctic catchment database (ARCADE; Speetjens et al., 2023) were matched with the Arctic shelf seas, where both datasets meet at the coast. Terrestrial drainage basins were aligned with the boundaries of the Arctic shelf seas to define broader regions, always with a pair of shelf sea and terrestrial catchment.

References:

International Hydrographic Organization (IHO)(1953). Limits of oceans and seas. 3rd edition. IHO Special Publication 23, Monaco, 38 pp. https://www.marineregions.org/gazetteer.php?p=details&id=1904.

Jakobsson, M. (2002). Hypsometry and volume of the Arctic Ocean and its constituent seas. Geochemistry, Geophysics, Geosystems 3, 1-18, doi:https://doi.org/10.1029/2001GC000302.

Speetjens, N. J., Hugelius, G., Gumbricht, T., Lantuit, H., Berghuijs, W. R., Pika, P. A., Poste, A., and Vonk, J. E. (2023). The pan-Arctic catchment database (ARCADE), Earth Syst. Sci. Data 15, 541–554, https://doi.org/10.5194/essd-15-541-2023.