This confirms everything that we know about the Arctic ice from oobservations - that it is melting from below and this process does not stop with the ending of the melt season
Enough Heat to Melt Interior Arctic Ocean Ice is Building Beneath the Surface
A new study shows that the excess heat developed in newly ice free zones is being transported beneath the central ice. This heat is sequestered in a layer beneath the surface. But it contains enough energy to keep large regions of the Beaufort Sea ice free during most months if mixed, according to the new research.
August 29, 2018
Arctic Ocean measurements reveal a near doubling of ocean heat content relative to the freezing temperature in the Beaufort Gyre halocline over the past three decades (1987–2017). This warming is linked to anomalous solar heating of surface waters in the northern Chukchi Sea, a main entryway for halocline waters to join the interior Beaufort Gyre. Summer solar heat absorption by the surface waters has increased fivefold over the same time period, chiefly because of reduced sea ice coverage. It is shown that the solar heating, considered together with subduction rates of surface water in this region, is sufficient to account for the observed halocline warming. Heat absorption at the basin margins and its subsequent accumulation in the ocean interior, therefore, have consequences for Beaufort Gyre sea ice beyond the summer season.