figure 4b. Surface pressure field and fronts
Can be copied onto a transparency and overlaid on figure 4a
In the next sections we will describe in qualitative terms how extratropical cyclones
develop and the satellite signatures associated with them. A standard theoretical model
will be used to answer questions about the initiation and development of these storms.
Keep in mind that there are other weather phenomena that do not fit this model of
extra-tropical cyclones yet do result in important weather effects. These phenomena
a re on a scale that can be readily observed by polar-orbiting satellites and will be
discussed in section 5.
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