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From The Developers...
One of the goals of WW2010 is to provide easy access to a large database
of real time data and instructional materials.
For this to occur, all
resources must be carefully organized to ensure quick and easy access by
the user.
The hierarchical menu structure we're implementing is
forcing us to do just that.
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Precipitation Along a Cold Front
by lifting of warm moist air ahead of it
The animation below is a vertical cross section depicting the development of
precipitation ahead of and
along a cold front.
The surging blue region represents
the cold air mass behind the cold front
(solid blue line) and the yellow
areas indicate the warm moist air mass ahead of the front.
[Image: animation depicting precipitation development along a cold front (96K)]
** Press "Reload" to restart the animation **
As the cold air mass propagates, it lifts the warmer less dense
air ahead of it (red arrows).
The air cools as it rises and the moisture condenses to produce
clouds and precipitation ahead of and along the cold front.
In contrast to
lifting along a warm
front, upward motions along a cold front are typically more vigorous,
producing
deeper clouds
and more intense bands of showers and thunderstorms.
However, these bands are often quite narrow (a couple hundred kilometers across)
and move rapidly just ahead of the cold front.
definition
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cyclones
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![[Image: animation depicting precipitation development along a cold front (96K)]](/abt/usrgd/tch/nvg/gifs/cfprcp.gif){kind=link}