Learn about spherical harmonics
===============================

Mathematical details
~~~~~~~~~~~~~~~~~~~~

- `Computing on the sphere - P. N. Swarztrauber <https://www2.cisl.ucar.edu/sites/default/files/Tutorials.pdf>`_

- `Real spherical harmonics - SHTOOLS <https://shtools.oca.eu/shtools/real-spherical-harmonics.html>`_

- `Python notebooks - examples and tutorials - SHTOOLS <https://shtools.oca.eu/shtools/python-examples.html>`_

- `A New Recurrence Formula for Efficient Computation of Spherical Harmonic Transform - K. Ishioka <https://doi.org/10.2151/jmsj.2018-019>`_

Wikipedia articles
~~~~~~~~~~~~~~~~~~

- `Spherical harmonics <https://en.wikipedia.org/wiki/Spherical_harmonics>`_

- `Vector spherical harmonics <https://en.wikipedia.org/wiki/Vector_spherical_harmonics>`_

CFD with spherical coordinates
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

- `Quickstart Guide: Idealized Global Atmospheric Models with Spectral Dynamics - GFDL/NOAA <https://www.gfdl.noaa.gov/idealized-spectral-models-quickstart>`_
  Alternate link from `web archive
  <https://web.archive.org/web/20170513055132/https://www.gfdl.noaa.gov/idealized-spectral-models-quickstart/>`_.

- `Initial-value problem for testing shallow water models - Galewsky et al.  <http://www-vortex.mcs.st-and.ac.uk/~rks/reprints/galewsky_etal_tellus_2004.pdf>`_