A deep anticyclone that extends throughout the depth of the troposphere and tends to obstruct the normal passage of depressions from west to east. The situation is less persistent than with large-scale blocking See omega high.
Blocking anticyclone A typical blocking anticyclone over Scandinavia during winter that brings an easterly flow of very cold air over western Europe. The arrows indicate the geostrophic flow, rather than that at the surface.
Subjects: Meteorology and Climatology.