Geocart menu class: Miscellaneous
Neither conformal nor equal area
Meridians: Central meridian is straight. Other meridians are circular arcs, equally spaced along the Equator but not along other parallels.
Parallels: Parallel straight lines equally spaced on the meridians 90° from the center
Symmetry: About the central meridian or the Equator
True along the central meridian and the Equator
Moderate for a hemisphere
Considerable area and shape distortion if used beyond the 90th meridians
Hemispheric maps, common in atlases between 1850 and 1925
Presented by Giambattista Nicolosi (1610-70) of Rome in 1660
Van der Grinten IV has parallels of different curvature and is extended to a world map.
Azimuthal Equidistant (equatorial aspect) has complex curves for meridians and parallels
Fournier Globular I has elliptical arcs for meridians.
Description adapted from J.P. Snyder and P.M. Voxland, An Album of Map Projections, U.S. Geological Survey Professional Paper 1453. United States Government Printing Office: 1989.