cordex.cell_area#
- cell_area(ds, R=6371000, attrs=True)[source]#
Compute cell areas for a regular spherical grid.
- Parameters:
ds (str) – Dataset containing a regular grid with longitude and latitude coordinates that can be understood by cf_xarray.
R (float) – Earth radius in units [m]. Defaults to 6371000 meters.
attrs (logical or str) – If True, add attributes for grid-cell area. If
"CF", add CF attributes for atmospheric grid-cell area.
- Returns:
Cell area (xr.DataArray) – DataArray containg the size of each grid cell in units [m2]
Notes
The solid angle differential of the sphere is computed as
\[d\Omega = \sin\theta\,d\theta\,d\phi\]with the surface element
\[dA = R^2 d\Omega\]References