Why is the Bering Sea climate more severe than the climate of Great Britain at similar latitudes?

The Bering Sea experiences a much more severe climate than Great Britain at similar latitudes primarily due to differences in oceanic heat transport.

While northwestern Europe, including the British Isles, benefits from the North Atlantic Current—an extension of the Gulf Stream system—the Pacific Ocean lacks a similarly effective thermohaline circulation to transport heat to high latitudes. In the North Atlantic, this circulation brings warm, saline water toward Europe, which, combined with prevailing westerly winds, maintains a mild climate.12

In contrast, the Bering Sea is characterized by cold subarctic waters and is influenced by its proximity to cold continental air masses from Siberia and northern Canada. Although the Alaska Current carries some warm Pacific water into the region, these tempering influences dissipate north of the Pribilof Islands, leading to extensive pack ice coverage and harsh winter conditions that are absent in the British Isles.345