# harmonica.datasets.fetch_gravity_earth¶

harmonica.datasets.fetch_gravity_earth()[source]

Fetch a global grid of Earth gravity.

Gravity is the magnitude of the gravity vector of the Earth (gravitational + centrifugal). The gravity observations are at 10 km (geometric) height and on a regular grid with 0.5 degree spacing. The grid was generated from the spherical harmonic model EIGEN-6C4 [Forste_etal2014] using the ICGEM Calculation Service. See the attrs attribute of the xarray.Dataset for information regarding the grid generation.

grid (xarray.Dataset) – The gravity grid (in mGal). Includes a computation (geometric) height grid (height_over_ell). Coordinates are geodetic latitude and longitude.