reduced grid
From Glossary of Meteorology
A term generally used for grids with points that lie along lines of latitude and longitude when some of the points at higher latitudes are removed.
Due to the convergence of the meridians, points along a parallel of latitude placed at regular angular intervals of longitude will become closer and closer together in geometric distance as the poles are approached. If points are removed at higher latitudes, the geometric distance between the remaining points does not become extremely small.
See variable resolution model.
