ensaio.fetch_earth_geoid#
- ensaio.fetch_earth_geoid(version)[source]#
Geoid height of the Earth at 10 arc-minute resolution
The grid is global with node spacing of 10 arc-minutes (grid-node registered) and stored in netCDF with CF-compliant metadata. The geoid height is derived from the EIGEN-6C4 spherical harmonic model of the Earth’s gravity field with respect to the WGS84 ellipsoid.
The horizontal datum is WGS84.
There are 1081 x 2161 grid points in total. Coordinates are longitude and latitude (geodetic).
Format: netCDF4 with zlib compression
Load with:
xarray.load_dataarray(requires the netcdf4 library)Original source: EIGEN-6C4 model
Original license: CC-BY
Pre-processing: Source code for preparation of the original dataset for redistribution in Ensaio
Versions:
1 (doi:10.5281/zenodo.5882205)
- Parameters:
version (int) – The data version to fetch. See the available versions above.
- Returns:
fname (
pathlib.Path) – Path to the downloaded file on disk.
Examples using ensaio.fetch_earth_geoid#
Earth geoid height grid at 10 arc-minute resolution