The regional sea in the North Atlantic Ocean which comprises the waters in the Greenland Basin. The average depth is about 2866 m. In the summer, the volume of the Greenland Sea consists of about 85% of the deep and bottom water masses (i.e. Greenland Sea Deep Water (GSDW) and Norwegian Sea Deep Water (NSDW)), 9% Arctic Intermediate Water (AIW), and 9% surface water masses, mostly Atlantic Water (AW).