Wouldn't it be nice to have a short range doppler radar system that we
could set up at the field and get a picture of the local area and the
atmospheric activity?
.........bc ([EMAIL PROTECTED]
http://www.widomaker.com/~conk
Williamsburg, VA 23185
On Tue, 2 Jul 2002, Ralph M. Deal wrote:
> Jack Womack <[EMAIL PROTECTED]> wrote:
>
>
> > The dry adiabatic chart generaly says that high
> > humidity at lower levels is the very best for thermal
> > formation because the moist air is lighter, and add a
> > little heat...and presto!!!! These charts are made
> > from soundings every day, and predict thermal trigger
> > temp., strength, cloudbase, and the tops of the
> > thermals...i.e. whether or not it is going to be a
> > blue thermal day, or one with a narrow usable lift
> > band with low cloudbases. When the weatherman says
> > "lots of Gulf moisture", he usually says "and
> > instability" to go along with it. Most moisture tends
> > to stay in the lower atmosphere. When there is lots of
> > moisture at upper levels, it's usually in the winter,
> > having ridden up over a front, or in some form of
> > tropical depression, like the one that's pummeling us
> > in Texas as I write this.
> >
> > Learned opinion of a full scale glider pilot..
>
> Very interesting, and from an appropriate expert! My assumption
> that humid air was less effective because of its lower density was
> based on powered flight where high density means more lift, shorter
> runways necessary for take-offs, desirable features. Gliding is
> a different game altogether. Nice to learn more about it. Any
> suggestions for resources on formation of thermals, how to pick them
> out, visually or from radar images,...?
>
> Ralph M. [EMAIL PROTECTED], novice would-be [RC] glider 'pilot'
>
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