Laptev Sea Laptev Sea The Laptev Sea (; ) is a marginal sea of the Arctic Ocean. It is located between the northern coast of Siberia, the Taimyr Peninsula, Severnaya Zemlya and the New Siberian Islands. Its northern boundary passes from the Arctic Cape to a point with co-ordinates of 79°N and 139°E, and ends at the Anisiy Cape. The Kara Sea lies to the west, the East Siberian Sea to the east. The sea is named after the Russian explorers Dmitry Laptev and Khariton Laptev; formerly, it had been known under various names, the last being Nordenskiöld Sea (), after explorer
Severnaya Zemlya Firnley Islands. Severnaya Zemlya is consistently cold and quite dry, with a mean annual temperature of , mean annual precipitation of about , and generally overcast skies. Monthly average temperature ranges from in February to in July. The archipelago sees large temperature fluctuations during winter months, as low-pressure cyclonic activity originating in the North Atlantic make their way across the Arctic, bringing precipitation and higher temperatures. These cyclones are most common in September and October, which see 30% of annual precipitation. Snowfall in summer is common as temperatures hover around , although higher temperatures occur when warm air masses move