EPSG systems

EPSG:6931 WGS 84 / NSIDC EASE-Grid 2.0 North

Projected system (Lambert Azimuthal Equal Area) in use: World - north of 0°N. The full definition below, and conversion in one click.

System record
CodeEPSG:6931
NameWGS 84 / NSIDC EASE-Grid 2.0 North
TypeProjected system — Lambert Azimuthal Equal Area
Area of use World - north of 0°N
Northern hemisphere.
Bounds W -180,00° · S 0,00° · E 180,00° · N 90,00°
Countries World
DatumWorld Geodetic System 1984
Ellipsoid WGS 84 a = 6378137 m · 1/f = 298.257223563
Base geographic system EPSG:4326 — WGS 84
Unit metre (X south, Y south)
Transformation to WGS 84 None: this is WGS 84
ScopeEnvironmental science - used as basis for EASE grid.

Projection parameters

ParameterValueUnit
Latitude of natural origin90degree
Longitude of natural origin0degree
False easting0metre
False northing0metre

proj4 definition

+proj=laea +lat_0=90 +lon_0=0 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:6931.

WKT (ESRI format, the .prj content)

PROJCS["WGS_1984_EASE-Grid_2.0_North",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Azimuthal_Equal_Area"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Latitude_Of_Origin",90.0],UNIT["Meter",1.0]]

All systems — World

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.