This module, Satellite Feature Identification: Cyclogenesis, uses water vapor satellite imagery to present a satellite perspective of basic features associated with the formation and development of extratropical cyclones. First, through an initial case study, the precursor elements leading to cyclogenesis are identified. Then three conceptual views of different ways cyclogenesis can evolve are presented along with additional examples to illustrate the concepts. Finally a series of exercises, again using real case studies, are used to emphasize the important points and provide realistic scenarios describing some of the many ways cyclogenesis reveals itself on satellite imagery. This module is part of the series: 'Dynamic Feature Identification: The Satellite Palette'.
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Conceptual animation of cyclogenesis occurring entirely within the cold air behind a front with no interaction with a downstream frontal band.
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Conceptual animation of cyclogenesis in a regime where an upstream perturbation in the flow field induces cyclogenesis within a downstream frontal band.
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Conceptual animation of cyclogenesis in a meridional regime as an upstream short wave trough interacts with a downstream frontal band.
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Flash interaction:
1st tab: 28-image loop of water vapor data 00 UTC, Feb 5-03 UTC Feb 6, 2012
2nd tab: Drawing tool with draggable elements over last frame of loop from first tab
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WV satellite image over Continental U.S., 03Z, 06 February 2012 annotated with expert analysis of upstream perturbations in the flow
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- Provide a simple definition for cyclogenesis.
- Using water vapor satellite imagery, identify possible areas for cyclogenesis.
- Using water vapor satellite imagery, find upstream perturbations which might cause cyclogenesis along a frontal band.
- Using water vapor satellite imagery, identify emerging clouds resulting from cyclogenesis.
- Characterize the relative strengths and distance between an upstream perturbation and a frontal band and understand how this affects cyclogenesis.
Cyclone, Cyclogenesis, Frontal Band, Vorticity Max, Water Vapor Channel, Development, Perturbation, Emerging Cloud