[Wrf-users] Input data and datums

[sam.hawkins at vattenfall.com]

Hi all,

I have a question about how WPS treats georeferenced input data.   I have read a few blog posts which suggest WPS treats latitudes in input datasets as spherical latitude on the WRF sphere,  even though the datasets themselves are defined wrt the WGS1984 ellipsoid. I've had a little look at the WPS source code, it seems this is the case, but I'm not certain.  This is not necessarily a problem as long as all input datasets are handled consistently.   I need to know as I would like to define the correct transformation to overlay high-resolution WRF outputs onto other datasets, without introducing any unnecessary shifts.  In short, I'm trying to do the reverse transformation correctly.

Kind regards,

Sam

Sam Hawkins
Senior Research Engineer
Vattenfall Wind Power Ltd
sam.hawkins at vattenfall.com<mailto:sam.hawkins at vattenfall.com>
+44 (0)7966 691026


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