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I have some raster data whose metadata defines its coordinate system as:

rotated regular grid, virtual North Pole at 39.25 N, 162.00 W (rotated coordinates)

Its spatial resolution is 0.044 degree.

I am trying to get this data into regular longitude, latitude coordinates and to do so I have defined a custom projection with these parameters:

+proj=longlat +datum=WGS84 +lat_0=39.25 +lon_0=-162 +no_defs.

It doesn't really seem to help though, this is the raster layer and OSM basemap layer, both visualized in WGS84: this

and this is the same layers, both visualized with this defined coordinate system: this

I feel like I must be missing something obvious here. Is this not how you would define a coordinate system for a rotated regular grid?

The source data, as well as the metadata PDF is here

wfgeo
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  • I don't have time to tease out the actual solution but check out this issue and its discussion: https://trac.osgeo.org/gdal/ticket/4285 – mkennedy Jan 22 '18 at 17:51
  • You might take a look at https://gis.stackexchange.com/questions/246258/transforming-data-from-a-rotated-pole-lat-lon-grid-into-regular-lat-lon-coordina?rq=1 and https://gis.stackexchange.com/questions/10808/manually-transforming-rotated-lat-lon-to-regular-lat-lon – AndreJ Jan 26 '18 at 14:49

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