Panoply

From NASA Goddard Institute for Space Studies:

Cross-platform Java application which plots raster images of globally gridded netCDF datasets. Features include:

• Select from a menu of over 30 global map projections.
• Slice specific latitude-longitude arrays from multidimensional arrays which also have dimensions in altitude, time, etc.
• Combine two arrays in one plot by differencing, summing or averaging.
• Draw continents outlines or overlays on the plot.
• Apply any PAL, ACT, or CWC color table to plot scale.
• Save plots to disk as PNG or GIF images.