Mean vertical wind profiles were derived from observed wind soundings in jet stream regions using the “peak wind” as a reference level. These profiles show the greatest shears immediately above and below the level of the peak wind. Relationships were found between the average height of the peak wind and the heights of three characteristic tropopause types. A mean synoptic model of a jet stream having marked ageostrophic characteristics is presented.
Mean vertical wind profiles were derived from observed wind soundings in jet stream regions using the "peak wind" as a reference level. These profiles show the greatest shears immediately above and below the level of the peak wind. Relationships were found between the average height of the peak wind and the heights of three characteristic tropopause types. A mean synoptic model of a jet stream having marked ageostrophic characteristics is presented.
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