The cooling effect of aircraft contrails was what initially got me involved
in geo. This all started about 2005 when I saw a BBC Horizon programme about
the effect of aircraft condensation trails. The clear skies in the
immediate few days after 911 allowed a good estimate of the global cooling
effect to be made and it was significant. There have also been similar
programmes about the effect of pollutants particularly smoke in South East
Asia due to forest fires.
I describe the "evolution of an idea" in detail at
http://www.naturaljointmobility.info/experiments.htm
Over time I found that there were more papers suggesting that contrails had
an overall warming effect than there were suggesting cooling. (as Mike
McCracken's post says)
I haven't followed the contrail / high cloud idea since and have
concentrated on stratospheric aerosols where there is the great advantage
that 13 global experiments have been done in the last 250 years proving
without doubt that the effect is cooling and in some cases by exactly the
right ammount. eg Pinatubo. We also know what happens if we overdo it eg
Tamboro1815
John Gorman
----- Original Message -----
From: "m2redmond" <[email protected]>
To: "geoengineering" <[email protected]>
Sent: Monday, January 11, 2010 7:11 PM
Subject: [geo] Re: GEOENGINEERING EXPERIMENTS BY UK AIR FORCE CREATE CLOUDS
ABOVE BRITAIN
JUST THINK IF THIS EFFECT WAS 100's to 1000's OF TIMES LARGER (much
thicker and larger in area) for each aircraft "mission".
My concept of dispensing large amounts of liquefied air (along with
water vapor and/or CCN's if necessary) might accomplish just that in a
single (100-ton) payload release.
NOW THINK OF MULTIPLE AIRCRAFT (if needed) CREATING ENOUGH CLOUD COVER
TO OFFSET GLOBAL WARMING.
I believe this is possible because of the huge net gain in cloud
creation per flight, and that this simple test by the British Army
supports my theory. Some have too easily dismissed the concept, when
this image sequence shows that a relatively small input to the
atmosphere can grow to create something very significant.
I have to believe that someone in this newsgroup recognizes the
potential in my approach and at least believes it should be seriously
considered along with other promising geoengineering concepts (incl
remote ships and sulfate aerosols).
Please comment on this either way- I would very much like to hear from
anyone in this group!
Mark Massmann
[email protected]
425-208-9798
Redmond WA
On Jan 9, 1:59 pm, Veli Albert Kallio <[email protected]>
wrote:
The British Army created a circular holding pattern to create an immense
artificial coil in the sky made of the military aeroplane's contrail. This
was then easy to distinguish and track by satellites to see undisputed,
how aeroplane emissions can be made to turn clear skies to artificial
cirrus covered clouds.
Link to the slide show:
http://news.bbc.co.uk/1/hi/sci/tech/8309629.stm
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