A Polar Equal-Area Map of the World
Air Force surveys in geophysics
AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA
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In the Design Climatology Branch, Air Force Cambridge Research Laboratories, there frequently arises a need for a global presentation of statistics on the climate. As in most statistical presentations the favored type of map is equal-area. But previous maps have been neglectful of the north and south polar areas. It is desirable to have a projection centered on the North Pole, with habitable land masses realistically grouped around the central point. The construction of the polar equal-area map is relatively simple for the Northern Hemisphere. In the associated representation of the Southern Hemisphere, however, several difficulties had to be overcome.