Thread: Haze domes
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Old June 24th 05, 01:26 PM
HL Falbaum
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They are common here in Georgia, USA (Southeastern USA) in the summer. We
too have haze on high pressure summer days, with dewpoints in the 55-65 F
days.

Haze "domes" are best seen when near the inversion level but when you need a
thermal, you are not there! They can be seen at all heights, but are best
described as "haze clumps (or clusters)" and only when "backlighted" by the
sun. They can be seen without sunglasses, and moderate blue blocking helps.
Polarization is OK if your canopy is perfect. Otherwise, the tress areas in
the plastic can be confusing.

It is not unusual to see a haze clump become a small Cu if there is enough
moisture.

--
Hartley Falbaum


"John Galloway" wrote in message
...
Haze domes are very commonly visible in the hazy UK
on high pressure days. They can be seen from the ground
if the inversion is low early in the day. In the air
they are easily seen from within a couple of thousand
feet of the inversion. You need some haze and a thermal
to form a dome and to be looking in the right direction
more or less into sun for them to be clearly visible.

On an XC course about 12 ago Andy Davis told us that
when he was flying on a difficult blue day in the wrong
direction for the haze domes to be visible he spent
a lot of time looking back over his shoulder for the
thermals behind him to line them up or, if necessary,
to turn back to one.

John Galloway


At 17:42 23 June 2005, Roger Kelly wrote:
Any 'haze dome' experts out there? Last weekend we
had two blue days and
having read Bob Wander's 'The Art of Thermaling ..
Made Easy' in which he
states that haze domes can be seen from the ground,
I spent a lot of my
time both on the ground and in flight looking for them.
No doubt
conditions have to be just right for them to be seen,
but I have yet to see
one, or recognize one. Can anyone describe what a
haze dome looks like.
From the air ... from the ground? Are they more visable
in dry or humid
conditions? Are they a rare phenomenon or relatively
frequent? Would they
only be visable if there was a low inversion level?



--
Roger Kelly
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