Fournier globular I

Classifications

archaic
globular

Graticule

Meridians: Central meridian is straight. Other meridians are semiellipses equally spaced along the equator but not along other parallels.
Parallels: Circular arcs concave away from the equator and equally spaced along the central meridian and 90°th meridians.
Poles: Points.
Symmetry: About the central meridian or the equator.

Scale

True along the central meridian and the equator.

Distortion

Moderate for a hemisphere.

Usage

Early whole-world or hemispheric maps.

Similar projections

Nicolosi globular has circular arcs for meridians.
Mollweide has straight parallels and is used for world maps, but meridians within one hemisphere are the same as those on Fournier I.
Azimuthal equidistant (equatorial aspect) has complex curves for meridians and parallels.

Origin

Presented by Georges Fournier of France in 1643.

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.