What Is Zonal Flow?
A jet stream pattern running mostly west to east with few big dips, usually bringing fast-moving, less extreme weather. In technical terms: Large-scale flow dominated by the west-east (zonal, u) wind component, with low-amplitude waves and limited meridional exchange of air masses.
Zonal Flow In Plain English
A jet stream pattern running mostly west to east with few big dips, usually bringing fast-moving, less extreme weather.
The Technical Definition
Large-scale flow dominated by the west-east (zonal, u) wind component, with low-amplitude waves and limited meridional exchange of air masses.