geolaplacian

geolaplacian(lon, lat, data, /, accuracy=4)

Calculate Laplacian in spherical coordinates.

Parameters

• lon, lat (ndarray) – The longitude and latitude.

• data (ndarray) – The data.

Notes

The solved equation is as follows:

\[\nabla^2 = \frac{1}{a^2\cos^2(\phi)} \frac{\partial^2}{\partial^2\theta} + \frac{1}{a^2\cos(\phi)} \frac{\partial}{\partial\phi} \cos\phi \frac{\partial}{\partial\phi}\]