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Fronts passing over the Mesosphere–Stratosphere–Troposphere radar near Aberystwyth, Wales, UK, possessed multiple bands in returned power and vertical shear of the horizontal wind. Warm fronts tended to have more bands than cold fronts. Of 82 bands in power with an associated band in the radiosonde data, 45% were associated with a decrease in specific humidity and an increase in stability (drying stable bands) and 21% were associated with an increase in humidity and a decrease in stability (moistening unstable bands). The radar detects airstream boundaries near fronts, some of which are not part of the front.
Many fronts over the UK do not fit the traditional conceptual model of a single maximum of vertical shear of the horizontal wind sloped over the cold air. A 2‐year climatology of 296 cold, warm, and occluded fronts from a mesosphere–stratosphere–troposphere radar near Aberystwyth, Wales, reveals that 74% of warm fronts were associated with multiple linear bands representing maxima of vertical wind...
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