Weather Service Bulletin No. 2, 1950. P. 52. Right - The North Pole in July as
seen on an aircraft radarscope at 18,000 feet. Numerous openings in pack ice.
Mid-September photograph from 18,000 feet at 76 N, 124W showing refreezing ice.
Old floes are encased in a matrix of new ice. Melt pools have refrozen and are
covered with a layer of snow.