Goode homolosine projection
Encyclopedia
The Goode homolosine projection (or interrupted Goode homolosine projection) is pseudocylindrical, equal-area, composite map projection
used for world map
s. Normally it is presented with multiple interruptions. Its equal-area property makes it useful for presenting spatial distribution of phenomena.
The projection was developed in 1923 by John Paul Goode
to provide an alternative to the Mercator
projection for portraying global areal relationships. Goode offered variations of the interruption scheme for emphasizing the world’s land masses and the world’s oceans. Some variants include extensions that repeat regions in two different lobes of the interrupted map in order to show Greenland or eastern Russia undivided. The homolosine evolved out Goode’s 1916 experiments in interrupting the Mollweide projection
.
Because the Mollweide is sometimes called the "homolographic projection," Goode fused the two names "homolographic" and "sinusoidal" to create the name “homolosine”. Common in the 1960s, the Goode homolosine projection is often called an "orange-peel map" because of its resemblance to the flattened rind of a hand-peeled orange. In its most common form, the map interrupts the North Atlantic, the South Atlantic, the South Pacific, the Indian Ocean, and the entire east/west meridian of the map.
Up to latitudes 41°44′11.8″N/S, the map is projected according to the Sinusoidal projection
’s transformation. The higher latitudes are the top sections of a Mollweide projection
, grafted to the Sinusoidal midsection where the scale of the two projections matches. This grafting results in a kink in the meridians along the parallel of the graft. The projection’s equal-area property follows from the fact that its source projections are themselves both equal-area.
Map projection
A map projection is any method of representing the surface of a sphere or other three-dimensional body on a plane. Map projections are necessary for creating maps. All map projections distort the surface in some fashion...
used for world map
World map
A world map is a map of the surface of the Earth, which may be made using any of a number of different map projections. A map projection is any method of representing the surface of a sphere or other three-dimensional body on a plane....
s. Normally it is presented with multiple interruptions. Its equal-area property makes it useful for presenting spatial distribution of phenomena.
The projection was developed in 1923 by John Paul Goode
John Paul Goode
John Paul Goode was one of the key geographers in American Geography’s Incipient Period from 1900 to 1940 . Goode was born in Stewartville, Minnesota on November 21, 1862. Goode received his bachelor’s degree from the University of Minnesota 1889 and his doctorate in Economics from the University...
to provide an alternative to the Mercator
Mercator projection
The Mercator projection is a cylindrical map projection presented by the Belgian geographer and cartographer Gerardus Mercator, in 1569. It became the standard map projection for nautical purposes because of its ability to represent lines of constant course, known as rhumb lines or loxodromes, as...
projection for portraying global areal relationships. Goode offered variations of the interruption scheme for emphasizing the world’s land masses and the world’s oceans. Some variants include extensions that repeat regions in two different lobes of the interrupted map in order to show Greenland or eastern Russia undivided. The homolosine evolved out Goode’s 1916 experiments in interrupting the Mollweide projection
Mollweide projection
The Mollweide projection is a pseudocylindrical map projection generally used for global maps of the world . Also known as the Babinet projection, homalographic projection, homolographic projection, and elliptical projection...
.
Because the Mollweide is sometimes called the "homolographic projection," Goode fused the two names "homolographic" and "sinusoidal" to create the name “homolosine”. Common in the 1960s, the Goode homolosine projection is often called an "orange-peel map" because of its resemblance to the flattened rind of a hand-peeled orange. In its most common form, the map interrupts the North Atlantic, the South Atlantic, the South Pacific, the Indian Ocean, and the entire east/west meridian of the map.
Up to latitudes 41°44′11.8″N/S, the map is projected according to the Sinusoidal projection
Sinusoidal projection
The sinusoidal projection is a pseudocylindrical equal-area map projection, sometimes called the Sanson–Flamsteed or the Mercator equal-area projection. Jean Cossin of Dieppe was one of the first mapmakers to use the sinusoidal, appearing in a world map of 1570...
’s transformation. The higher latitudes are the top sections of a Mollweide projection
Mollweide projection
The Mollweide projection is a pseudocylindrical map projection generally used for global maps of the world . Also known as the Babinet projection, homalographic projection, homolographic projection, and elliptical projection...
, grafted to the Sinusoidal midsection where the scale of the two projections matches. This grafting results in a kink in the meridians along the parallel of the graft. The projection’s equal-area property follows from the fact that its source projections are themselves both equal-area.