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Location: UFOUpDatesList.Com > 2007 > Jan > Jan 5

Re: Holes In The Cloud Deck - Shough

From: Martin Shough <parcellular.nul>
Date: Thu, 4 Jan 2007 16:13:15 -0000
Fwd Date: Fri, 05 Jan 2007 07:32:48 -0500
Subject: Re: Holes In The Cloud Deck - Shough


>From: Jim Deardorff <deardorj.nul>
>To: ufoupdates.nul,
>Date: Wed, 03 Jan 2007 09:44:16 -0800
>Subject: Holes In The Cloud Deck [was: In the sky! A bird? A
>plane? A... UFO?]

>>From: Michael Tarbell <mtarbell.nul>
>>To: ufoupdates.nul
>>Date: Tue, 02 Jan 2007 10:39:55 -0700
>>Subject: Re: In the sky! A bird? A plane? A... UFO?

>>>From: Martin Shough <parcellular.nul>
>>>To: <ufoupdates.nul>
>>>Date: Mon, 1 Jan 2007 15:35:15 -0000
>>>Subject: Re: In the sky! A bird? A plane? A... UFO?

>A similar phenomenon are the large, very circular holes very
>infrequently observed in an alto-cumulus layer. There, cloud
>physicists could assume that the cloud was composed of
>supercooled droplets into which ice crystals had somehow formed
>at one spot, which then rapidly spread out laterally to form a
>circle of increasing diameter, with trails of ice crystals
>falling out. (I can't find my files on this at the momemnt).
>Trouble is, no such circles have ever been observed in their
>initial phases, no substantial ring of falling ice-crystal
>trails was observed, and the holes were very large (1/2 mile or
>so in diameter) yet had a well defined circular edge despite
>local variations in cloud-droplet density, temperature, wind
>shear, etc.

Hi Jim & Mike

There's a slightly unusual cloud hole shown at:

http://epod.usra.edu/archive/epodviewer.php3?oid=99360

". . .the centerpiece of the photo is the donut-shaped
altocumulus cloud. Note the iridescent nature of this cloud,
which means that it's likely less than about 40 degrees away from
the Sun. Iridescence results from diffraction - deflection of
light around objects, water droplets for instance. For a hole to
occur in a cloud, some process must be at work to remove the
cloud droplets or crystals. For example, if a cloud is seeded
with silver iodine or carbon dioxide, a hole could occur in a
portion of the cloud deck. In this case thought, the hole is more
perpendicular than parallel to the ground surface, so it's
unlikely that it results from seeding. Also, note the jet
contrail and its shadow to the left of the donut cloud. Although,
it appears the jet pierced the hole, it couldn't have caused the
hole to form in a fraction of a second."

Terrific photo of the more usual type of hole in stratified cloud
(over Mobile, Alabama, I think) at this blog:

http://rustybucket.blogspot.com/2004_09_01_rustybucket_archive.html

Another beautiful example from the UK is here:

http://people.tribe.net/skeyeopener/photos/0e303cc1-17ee-4739-b4ac-b3add13b7fc4

Almost identical to well-known photo series shown at:

http://www.karinya.com/ufoclouds.htm

(ignore "Arcturian ship" references!) and elsewhere.

It appears that you can see the falling out of ice crystals from
the middle of these extraordinary holes.

There were articles entitled "Hole in Cloud" and "Observations on
two Simultaneous Cloud Holes in Miami" in the American Met Soc.
Bulletin, Oct 1968 and March 1969 respectively

( http://www.project1947.com/shg/a2.htm )

Other papers on "Holes in the Clouds" appeared in Weatherwise Oct
1968, Nov 1968, Feb 1969, Dec 1983 & Oct 1985

( http://www.project1947.com/shg/w2.htm )

Possibly of indirect relevance, recall James McDonald wrote a
paper on an unusual "Cloud Ring in the Upper Stratosphere" in
Weatherwise, June 1963, and another "Stratospheric Cloud over N
Arizona" in Science, vol 140, 3564, pp.292-4. There's some
discussion of this and photos in Ann Druffel's "Firestorm!"
(p.112 & p.538) where it is stated that the ring turned out to be
caused by a missile launch from Pt. Mugu. McDonald also got
interested in possible exotic cloud physics in a UFO connection
with the Heflin and Ft. Belvoir "smoke rings".

A different angle, if we're looking at technology, is the
following patent for a cloud-punching laser device for military
surveillance. CO2 lasers of the type mentioned work in the
infrared:

http://www.freepatentsonline.com/4411487.html

-----

"A device for seeing through an aerosol cloud cover comprising a
high power laser source which produces a laser output that is
directed ... through said aerosol cloud cover to produce a hole
therein, and means... for viewing objects camouflaged by said
cloud cover.

2. A device as set forth in claim 1, wherein said high power
laser is a pulsed CO2 laser and the output from said laser having
a hole at its center with the laser output being projected on
said mirror and around said hole in said mirror.

3. A device as set forth in claim 1, wherein said viewing means
is a thermal imaging device of the infrared type.

4. A device as set forth in claims 2 or 3, wherein said laser
has an output of about 5,000 to about 10,000 joules per pulse."

I suppose in an O'Hare type situation a downward-directed maser
beam beneath an ascending object might keep a relatively
well-defined cloud hole open for some time after it had passed
though. The directionality and various possible pulse v. cw
characteristics of such a coherent emission would obviously make
a big difference to any calculation of power generated from pwer
density "on target".

-----

Martin




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