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Mauna Kea Weather Center Meteorology Glossary/Dictionary

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  • zonal - In meteorology, latitudinal, that is, easterly or westerly; opposed to meridional.

  • zonal flow - (Also called zonal circulation.) In meteorology, the flow of air along a latitude circle; more specifically, the latitudinal (east or west) component of existing flow. Compare meridional flow; see zonal index.