Using Map Projections in GrADS

It is important to understand the distinction between the two uses of map projections when creating GrADS displays of your data:

GrADS supports two types of data grids:

Using Preprojected Grids

Polar Stereo Preprojected Data (coarse accuracy for NMC Models)

Lambert Conformal Preprojected Data

NMC Eta model (unstaggered grids)

NMC high accuracy polar stereo for SSM/I data

CSU RAMS Oblique Polar Stereo Grids

Pitfalls when using preprojected data

GrADS Display Projections

Summary and Plans