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NSIDC Special Report - 9:
Methods for Regridding AARI Data in SIGRID Format to the EASE-Grid Projection


Figure 6.  Rectangular Representation of SIGRID Digitized Points

Figure 6. Rectangular Representation of SIGRID Digitized Points

The spacing is every 0.25 degrees latitude and every 0.25 degrees longitude.
The resulting dimensions are x=1440 pixels, y = 361 pixels.
very light gray = pixel representing a digitized SIGRID point.
black = pixel representing a non-digitized point.