upper cold front

'upper cold front' can also refer to...


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A cold front that is produced when the descending branch of the cold conveyor belt (see dry intrusion) has a greater eastwards motion than the warm conveyor belt, which it overruns, creating an upper cold front (a katafront), which lies ahead of the surface cold front. This leads to increased instability, convective activity (often producing thunderstorms), and heavy precipitation. In many cases, now known to be relatively common, this gives rise to the distinct, and important, form known as a split front.

Subjects: Meteorology and Climatology.

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