Zonal spherical harmonics
= Zonal spherical harmonics
{wiki=Zonal_spherical_harmonics}
Zonal spherical harmonics are a specific class of spherical harmonics that depend only on the polar angle (colatitude) and are independent of the azimuthal angle (longitude). They are used in various applications such as geophysics, astronomy, and climate science, often to represent functions on the surface of a sphere.