[Proj] T62 Gaussian grid

Matthew Landis landis at isciences.com
Mon Jul 12 07:39:16 EST 2010

Dear Proj list,

I'm trying to incorporate some climate data into a model.  Most of our 
data is on a regular lat-lon grid, but the climate data uses a T62 
Gaussian grid.  I'm new to these; apparently they are commonly used in 
climate models (see http://en.wikipedia.org/wiki/Gaussian_grid). The 
distinguishing feature is that they are not regular grids in that the 
size of the latitude grid cells varies with latitude.   I'd like to be 
able to interpolate them to a regular grid (I'm working in R using 
rgdal), but I haven't been able to find a proj.4 string to help specify 
the interpolation. 

In the meantime, I have  a workaround by simply changing the latitude 
coordinates at the poles slightly to fit on a regular grid.  This should 
be OK, but for the sake of appearances I'd like to do it the proper way.

Many thanks for any thoughts. 



Matthew Landis, Ph.D.
Research Scientist
ISciences, LLC
61 Main St. Suite 200
Burlington VT 05401

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