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Projections
 

The grid_mapping attribute of the main data variable in each file names a "dummy" variable whose attributes record the type and parameters of the map projection used by each RCM. Here's a summary all in one place:

CRCM

polar_stereographic:grid_mapping_name = "polar_stereographic"
polar_stereographic:latitude_of_projection_origin = 90.
polar_stereographic:standard_parallel = 60.
polar_stereographic:straight_vertical_longitude_from_pole = 263.
polar_stereographic:false_easting = 3475000.
polar_stereographic:false_northing = 7475000.

ECP2

polar_stereographic:grid_mapping_name = "polar_stereographic"
polar_stereographic:latitude_of_projection_origin = 90.
polar_stereographic:standard_parallel = 60.
polar_stereographic:straight_vertical_longitude_from_pole = 263.
polar_stereographic:false_easting = 4700000.
polar_stereographic:false_northing = 8500000.

HRM3

rotated_pole:grid_mapping_name = "rotated_latitude_longitude"
rotated_pole:grid_north_pole_latitude = 42.5
rotated_pole:grid_north_pole_longitude = 83.

MM5I

Lambert_Conformal:grid_mapping_name = "lambert_conformal_conic"
Lambert_Conformal:latitude_of_projection_origin = 47.5
Lambert_Conformal:longitude_of_central_meridian = -97.
Lambert_Conformal:standard_parallel = 30., 60.
Lambert_Conformal:false_easting = 3825000.
Lambert_Conformal:false_northing = 3200000.

RCM3

Transverse_Mercator:grid_mapping_name = "transverse_mercator"
Transverse_Mercator:latitude_of_projection_origin = 47.5
Transverse_Mercator:longitude_of_central_meridian = -97.
Transverse_Mercator:scale_factor_at_central_meridian = 1.
Transverse_Mercator:false_easting = 3900000.
Transverse_Mercator:false_northing = 3150000.

WRFG

Lambert_Conformal:grid_mapping_name = "lambert_conformal_conic"
Lambert_Conformal:latitude_of_projection_origin = 47.5
Lambert_Conformal:longitude_of_central_meridian = -97.
Lambert_Conformal:standard_parallel = 30., 60.
Lambert_Conformal:false_easting = 3325000.
Lambert_Conformal:false_northing = 2700000.

 
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