meridional index

meridional index

[mə′rid·ē·ən·əl ′in‚deks]
(meteorology)
A measure of the component of air motion along meridians, averaged, without regard to sign, around a given latitude circle.
References in periodicals archive ?
The indices s and n are the zonal wave-number and meridional index, respectively.
Each row is for a different zonal wavenumber s and each column is for a different meridional index n.