[gradsusr] High resolution Land/ocean globale data for basemap.gs

[Rabah Hachelaf]

Hi All,

Can some one tell me if there is a high resolution global data (not for
North Amercia) works with basemap.gs script to mask out land surface.

if not is there some trick to do this, note that i have not sea-land mask
in my file.

Thank you.

Rabah
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