I think your estimates do not include the changes in the global warming
potentials as the atmospheric windows will decrease sharply with higher
atmospheric concentrations of SF6 and other gases.
Oliver
On 9/29/2014 10:51 AM, Stolaroff, Joshuah K wrote:
For the equivalent of doubling the current atmospheric CO2
concentration, you'd need ~120 Mt of SF6. That is about 1/4 of the
U.S. annual commodity chemical production (500 Mt in 2000).
-Josh
------------------------------------------------------------------------
*From:* [email protected]
[[email protected]] on behalf of Andrew Lockley
[[email protected]]
*Sent:* Sunday, September 28, 2014 10:10 AM
*To:* David Lewis
*Cc:* geoengineering
*Subject:* Re: [geo] Re: Dr Evil
But to get an equivalent amount of warming with CFCs or similar would
actually be quite practical, I think. It could potentially be
weaponised quite easily. It would probably be quite easy to conceal
the necessary volumes of SF6 or similar, eg in old salt mines.
It would even possibly be within our technology horizon to make a
spaceship that could crawl slowly to another planet and crash land
that kind of volume of chemicals into their atmosphere. Basically a
crude geoengineering version of the death star.
A
On 28 Sep 2014 17:22, "David Lewis" <[email protected]
<mailto:[email protected]>> wrote:
Goldblatt said in 2013: "our estimate is that it would take
30,000 ppm CO2 in the atmosphere to make it warm enough to trigger
this runaway greenhouse", i.e. boil the oceans away. He said this
was a finding in the Goldblatt et.al <http://et.al>. Low simulated
radiation limit for runaway greenhouse climates
<http://www.nature.com/ngeo/journal/v6/n8/full/ngeo1892.html>
paper published at that time. He was quoted
<http://www.nbcnews.com/science/science-news/runaway-greenhouse-easier-trigger-earth-thought-study-says-f6C10761164>
in an NBC interview, saying this "really seems quite unlikely".
Would 30,000 ppm seem unlikely to Dr. Evil? The man had a base on
the Moon. Is *ISIS* just Dr. Evil diverting our attention from his
extraterrestrial carbon import program?
On Saturday, September 27, 2014 5:48:55 PM UTC-7, andrewjlockley
wrote:
If Dr Evil wanted to destroy the world with geoengineering,
how easy would it be? How much super greenhouse gas would have
to be released to boil the oceans? How much SRM would be
needed to snowball the Earth?
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New Mexico Tech
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