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NCL Scripts to Regrid NCEP/NCAR Reanalysis Data for Comparison with CCR GCM Output

These scripts allow the user to regrid (interpolate) NCEP/NCAR Reanalysis Data to the CCM1 (R15), CCM3 (T42), Genesis (T31, 2x2), and FOAM (R15) grids so that GCM output may be compared with NCEP/NCAR Reanalysis Data.

There are several versions of these scripts because the NCEP/NCAR Data is on two grids: a fixed grid (2.5x2.5 degrees with 73x144 points) and a gaussian grid (T62 with 94x192 points). You will need to check your data (do a "ncdump -h") for its dimensions so that you know what type of grid it is on.

Contents

Regrid Data from the NCEP FIXED Grid to a GAUSSIAN Grid

Use function f2gsh(grid : numeric, outdims[2] : integer,  twave[1]  : integer)

Scripts

Scripts to Regrid Data from a GAUSSIAN Grid to a GAUSSIAN Grid

Use function g2gsh(grid : numeric, outdims[2] : integer,  twave[1]  : integer)

Scripts

Scripts to Regrid Data from a FIXED Grid to a FIXED Grid

NCEP/NCAR Reanalysis Data