Comment on Spherical HarmonicsComments−dagss1yTL;DR about spherical harmonics: It is what you use instead of Fourier transforms if what you transform is on the surface of a sphere.My experience is from cosmology (CMB) where they are heavily used just like Fourier transforms, I think they are also used in meteorology.
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TL;DR about spherical harmonics: It is what you use instead of Fourier transforms if what you transform is on the surface of a sphere.
My experience is from cosmology (CMB) where they are heavily used just like Fourier transforms, I think they are also used in meteorology.