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Explosive Cyclogenesis
Linked via "divergence aloft"
Upper-Level Dynamics (Divergence)
The primary driver involves the potent amplification of positive relative vorticity advection (PVA) in the upper troposphere, specifically associated with jet streams. When a strong jet streak (an area of maximum wind speed within the jet stream) propagates over a developing surface low, the resultant divergence aloft creates a strong [upward vertical … -
Low Pressure Centers
Linked via "divergence aloft"
Dynamic Development (Cyclogenesis)
Dynamic low-pressure systems arise from upper-atmospheric processes, primarily divergence aloft coinciding with convergence at the surface. The most significant examples are extratropical cyclones.
The interaction between the jet stream and the surface pressure field is governed by the *Geostrophic Imbalance…