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Geodetic CRS: WGS 84
Datum: World Geodetic System 1984 ensemble
Data source: EPSG
Information source: IOGP
Revision date: 2021-02-05
Scope: Derivation of gravity-related heights from GNSS observations.
Remarks: Parameter values are from WGS 84 to EGM2008 height (2) (CT code 3859) assuming that the EGM2008 surface equals MSL surface within the accuracy of the transformation. For reversible alternative see WGS 84 to WGS 84 + MSL height (1) (code 9706).
Method: Geographic3D to GravityRelatedHeight (EGM2008)
Area of use: World.
Description: (0,)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["WGS 84 to MSL height (1)", VERSION["IOGP-World"], SOURCECRS[ GEOGCRS["WGS 84", ENSEMBLE["World Geodetic System 1984 ensemble", MEMBER["World Geodetic System 1984 (Transit)"], MEMBER["World Geodetic System 1984 (G730)"], MEMBER["World Geodetic System 1984 (G873)"], MEMBER["World Geodetic System 1984 (G1150)"], MEMBER["World Geodetic System 1984 (G1674)"], MEMBER["World Geodetic System 1984 (G1762)"], MEMBER["World Geodetic System 1984 (G2139)"], ELLIPSOID["WGS 84",6378137,298.257223563, LENGTHUNIT["metre",1]], ENSEMBLEACCURACY[2.0]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,3], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], AXIS["ellipsoidal height (h)",up, ORDER[3], LENGTHUNIT["metre",1]], ID["EPSG",4979]]], TARGETCRS[ VERTCRS["MSL height", VDATUM["Mean Sea Level"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], ID["EPSG",5714]]], METHOD["Geographic3D to GravityRelatedHeight (EGM2008)", ID["EPSG",1025]], PARAMETERFILE["Geoid (height correction) model file","Und_min1x1_egm2008_isw=82_WGS84_TideFree.gz"], OPERATIONACCURACY[0.5], USAGE[ SCOPE["Derivation of gravity-related heights from GNSS observations."], AREA["World."], BBOX[-90,-180,90,180]], ID["EPSG",8037], REMARK["Parameter values are from WGS 84 to EGM2008 height (2) (CT code 3859) assuming that the EGM2008 surface equals MSL surface within the accuracy of the transformation. For reversible alternative see WGS 84 to WGS 84 + MSL height (1) (code 9706)."]]
Definition: PROJ.4
+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=Und_min1x1_egm2008_isw=82_WGS84_TideFree.gz +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:8037","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=Und_min1x1_egm2008_isw=82_WGS84_TideFree.gz +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1");
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Transformation", "name": "WGS 84 to MSL height (1)", "source_crs": { "type": "GeographicCRS", "name": "WGS 84", "datum_ensemble": { "name": "World Geodetic System 1984 ensemble", "members": [ { "name": "World Geodetic System 1984 (Transit)", "id": { "authority": "EPSG", "code": 1166 } }, { "name": "World Geodetic System 1984 (G730)", "id": { "authority": "EPSG", "code": 1152 } }, { "name": "World Geodetic System 1984 (G873)", "id": { "authority": "EPSG", "code": 1153 } }, { "name": "World Geodetic System 1984 (G1150)", "id": { "authority": "EPSG", "code": 1154 } }, { "name": "World Geodetic System 1984 (G1674)", "id": { "authority": "EPSG", "code": 1155 } }, { "name": "World Geodetic System 1984 (G1762)", "id": { "authority": "EPSG", "code": 1156 } }, { "name": "World Geodetic System 1984 (G2139)", "id": { "authority": "EPSG", "code": 1309 } } ], "ellipsoid": { "name": "WGS 84", "semi_major_axis": 6378137, "inverse_flattening": 298.257223563 }, "accuracy": "2.0", "id": { "authority": "EPSG", "code": 6326 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" }, { "name": "Ellipsoidal height", "abbreviation": "h", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 4979 } }, "target_crs": { "type": "VerticalCRS", "name": "MSL height", "datum": { "type": "VerticalReferenceFrame", "name": "Mean Sea Level" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 5714 } }, "method": { "name": "Geographic3D to GravityRelatedHeight (EGM2008)", "id": { "authority": "EPSG", "code": 1025 } }, "parameters": [ { "name": "Geoid (height correction) model file", "value": "Und_min1x1_egm2008_isw=82_WGS84_TideFree.gz", "id": { "authority": "EPSG", "code": 8666 } } ], "accuracy": "0.5", "scope": "Derivation of gravity-related heights from GNSS observations.", "area": "World.", "bbox": { "south_latitude": -90, "west_longitude": -180, "north_latitude": 90, "east_longitude": 180 }, "id": { "authority": "EPSG", "code": 8037 }, "remarks": "Parameter values are from WGS 84 to EGM2008 height (2) (CT code 3859) assuming that the EGM2008 surface equals MSL surface within the accuracy of the transformation. For reversible alternative see WGS 84 to WGS 84 + MSL height (1) (code 9706)." }
Definition: MapServer - MAPfile
PROJECTION "proj=pipeline" "step" "proj=axisswap" "order=2,1" "step" "proj=unitconvert" "xy_in=deg" "xy_out=rad" "step" "inv" "proj=vgridshift" "grids=Und_min1x1_egm2008_isw=82_WGS84_TideFree.gz" "multiplier=1" "step" "proj=unitconvert" "xy_in=rad" "xy_out=deg" "step" "proj=axisswap" "order=2,1" END
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=Und_min1x1_egm2008_isw=82_WGS84_TideFree.gz +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1"> <Layer srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=Und_min1x1_egm2008_isw=82_WGS84_TideFree.gz +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 8037, 'EPSG', 8037, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=Und_min1x1_egm2008_isw=82_WGS84_TideFree.gz +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');
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