EASE2_M12.5km.gpd

; 12.5 km Global EASE-Grid-2.0 grid parameter definition.
; This projection uses the WGS84 ellipsoid.
; The left and right edges of the grid are at -+180.000000 deg longitude.
; The top and bottom edges of the grid are at  +-84.439790 deg latitude.
; This grid exactly nests in the EASE2_M25km grid
; 2011-02-08 : Original grid defined with scale = 12512.63000405 m
; 2014-03-05 : Scale revised to 12512.63000 m
;              Original scale at higher precision was causing accumulated round-off
;              error that resulted in left edge (col=-0.5) values to return
;              longitude 180.0, and right edge values to return longitude -180.0. 
Map Projection:                     Cylindrical Equal-Area (ellipsoid)
Map Reference Latitude:             0.0
Map Reference Longitude:            0.0
Map Second Reference Latitude:      30.0
Map Rotation:                       0.0
Map Equatorial Radius:              6378137.0        ; wgs84
Map Eccentricity:                   0.081819190843   ; wgs84
Map Origin X:                       -17367530.44     ; Grid Map Units Per Cell *
                                                     ; Grid Width / 2
Map Origin Y:                       7307375.92       ; Grid Map Units per Cell *
                                                     ; Grid Height / 2
Grid Map Origin Column:             -0.5
Grid Map Origin Row:                -0.5
Grid Map Units per Cell:            12512.63000      ; meters (see comment)
Grid Width:                         2776
Grid Height:                        1168

; The following parameters are used only by NSIDC programs that actually draw maps
Map Southern Bound:                 -84.439790
Map Northern Bound:                 84.439790
Map Western Bound:                  -180.0
Map Eastern Bound:                  180.0
Map Graticule Latitude Interval:    15.00
Map Graticule Longitude Interval:   30.00
Map Graticule Label Latitude:       0.0
Map Graticule Label Longitude:      0.0
Map CIL Detail Level:               1
Map BDY Detail Level:               0
Map RIV Detail Level:               0