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topo - the built-in topography on a regular half degree grid
Added by Ralf Mueller over 11 years ago
The operator topo creates a half degree regular grid with the heights and depths taken from the ETOPO project:
This can be very usefull for generating masks to a certain height/depth with the Comparions operators. The data for the above plot was created by
cdo -f nc topo topo.nc
I can see in the documentation that I can give a grid description in order to get a topography interpolated to that grid. But, what kind of interpolation is used?.
Thanks in advance.
Hi Antonio!
the internal representation is a 0.5 degree regular grid, interpolation is a nearest-neighbor interpolation.
cheers
ralf