Greetings,

I have been working with variables output from the IPCC AR5 GCM data
(CMIP5) and have approached some data with a strange coordinate system that
I have not seen prior.  It is the Sea Ice Concentration (sic) data from the
AR5 experiments that have rotated pole coordinate systems.  Through a bit
of searching I have found that this is common practice in polar modeling to
remove some singularity issues with diminishing distances close to the
poles (in my case the North pole).  These researchers have moved the pole
from its typical location to say Greenland to remove this singularity issue
from the analysis, but to analyze the differences between different IPCC
institutes model outputs it will be necessary to get them on the same grid.
 Has anyone had some experience with this?  Is it possible to write a
function in the Raster package that would transform the poles, back to
their original location?  I have seen some IDL code out there, but do not
have this proprietary language, so wanted to see if there was a way to do
this in R.

Any thoughts or advice is greatly appreciated,

Thanks!

Michael

-- 
Michael A. Lindgren, CMS
Spatial Analyst
Scenarios Network for Alaska and Arctic Planning (SNAP)
University of Alaska
3352 College Road
Fairbanks, AK 99709

Email: malindgren@alaska.edu
Phone: 907 474 7069

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