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polar_steorographic projection in sea ice datasets » grid.txt

Grid information with updated proj4_params - Carlos Moffat, 2024-06-11 12:04

 
#
# gridID 1
#
gridtype = projection
gridsize = 104912
xsize = 316
ysize = 332
xname = x
xlongname = "x"
xunits = "meters"
yname = y
ylongname = "y"
yunits = "meters"
xfirst = -3937500
xinc = 25000
yfirst = 4337500
yinc = -25000
grid_mapping = crs
grid_mapping_name = polar_stereographic
crs_wkt = 'PROJCS["NSIDC Sea Ice Polar Stereographic South",GEOGCS["Unspecified datum based upon the Hughes 1980 ellipsoid",DATUM["Not_specified_based_on_Hughes_1980_ellipsoid", SPHEROID["Hughes 1980",6378273,298.279411123061,AUTHORITY["EPSG","7058"]], AUTHORITY["EPSG","6054"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4054"]], PROJECTION["Polar_Stereographic"],PARAMETER["latitude_of_origin",70], PARAMETER["central_meridian",0],PARAMETER["scale_factor",1],PARAMETER["false_easting",0], PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]], AXIS["X",EAST],AXIS["Y",NORTH],AUTHORITY["EPSG","3412"]]'
long_name = "NSIDC_SH_PolarStereo_25km"
standard_parallel = -70.
inverse_flattening = 298.279411123064
proj4_params = "+proj=stere +lat_0=-90 +lat_ts=-70 +lon_0=0 +k=1 +x_0=0 +y_0=0 +a=6378273 +b=6356889.449 +units=m +no_defs"
straight_vertical_longitude_from_pole = 0.
false_easting = 0.
false_northing = 0.
semi_major_axis = 6378273.
latitude_of_projection_origin = -90.
GeoTransform = "-3950000 25000 0 4350000 0 -25000"
longitude_of_prime_meridian = 0.
srid = "urn:ogc:def:crs:EPSG::3412"
(2-2/3)