Behrmann projection

From Wikipedia
Behrmann projection of the world
The Behrmann cylindrical equal-area projection with Tissot's indicatrices of deformation

The Behrmann projection is a cylindrical map projection described by Walter Behrmann in 1910. It is a member of the cylindrical equal-area projection family. Members of the family differ by their standard parallels, which are parallels along which the projection has no distortion. In the case of the Behrmann projection, the standard parallels are 30°N and 30°S. The projection shares many characteristics with other members of the family such as the Lambert cylindrical equal-area projection, whose standard parallel is the equator, and the Gall–Peters projection, whose standard parallels are 45°N and 45°S. While equal-area, distortion of shape increases in the Behrmann projection according to distance from the standard parallels. The Behrmann projection has the property that half of the Earth's surface is stretched horizontally and the other half is stretched vertically. This projection is not equidistant.

Comparison of the Behrmann projection and some cylindrical equal-area map projections with Tissot indicatrix, standard parallels and aspect ratio

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