A piteraq is a cold katabatic wind which originates on the Greenlandic icecap and sweeps down the east coast. The word "piteraq" means "that which attacks you" in the local language. Piteraqs are most common in the autumn and winter. Wind speeds typically reach 50 to 80 m/s (180-288 km/h; 111-178 mph).

Causes

The Greenland ice sheet cools the air directly above it. Colder air is denser, and it sinks, forming a separate layer of

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