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FIELD trials for experiments to engineer the climate have begun. Next month a team of UK researchers will hoist one end of a 1-kilometre-long hose aloft using a balloon, then attempt to pump water up it and spray it into the atmosphere (see diagram).
The water will not affect the climate. Rather, the experiment is a proof of principle to show that we can pump large quantities of material to great heights. If it succeeds, a larger-scale version could one day pump sulphate aerosols into the stratosphere, creating a sunshade that will offset the greenhouse effect.
"I think it's a little reckless." The most interesting result will be how the public reacts
In 2009, a team of Russian scientists sprayed a small amount of sulphate aerosols into the atmosphere and found that they blocked between 1 and 10 per cent of incoming solar radiation (Russian Meteorology and Hydrology, DOI: 10.3103/S106837390905001X).
"I'd say there's a 50-50 chance we'll end up doing it, because it'll get too warm and people will
demand the planet be cooled off,"
But the option that is taken most seriously is altogether grander in conception and scale. The scheme proposes nothing less than the transformation of the chemical composition of the Earth's atmosphere so that humans can regulate the temperature of the planet as desired. Like volcanic eruptions, it involves injecting sulphur dioxide gas into the stratosphere to blanket the Earth with tiny particles that reflect solar radiation.
Various schemes have been proposed, with the most promising being adaptation of high-flying aircraft fitted with extra tanks and nozzles to spray the chemicals. A fleet of 747s could do the job. www.guardian.co.uk...
"In searching for a new enemy to unite us, we came up with the idea that pollution, the threat of global warming, water shortages, famine and the like would fit the bill. All these dangers are caused by human intervention, and it is only through changed attitudes and behavior that they can be overcome. The real enemy then, is humanity itself."
The SPICE project will investigate the effectiveness of stratospheric particle injection. It will address the three grand challenges in solar radiation management: 1. How much, of what, needs to be injected where into the atmosphere to effectively and safely manage the climate system? 2. How do we deliver it there? 3. What are the likely impacts? These questions are addressed through 3 coordinated and inter-linked work packages:
Evaluating candidate particles: What is the 'perfect' particle, that maximizes solar radiation scattering, minimizes the greenhouse effect and the impact on the stratospheric ozone layer and has minimal impact on climate, weather, ecosystems and human health?
Delivery Systems: What are the various options for delivery of particles? What is the feasibility of using a tethered-balloon pipe to inject particles and/or gases into the stratosphere in a more cost-effective and sustainable way than alternative methods? gow.epsrc.ac.uk.../I01473X/1
Originally posted by JibbyJedi
Very well put together.
From what I read, it sounds like a wonderful way to spend reckless amounts of money for something they claim aren't sure what the final results will be.
Originally posted by pianopraze
Here are a few common geoengineering suggestions from the CFR symposium:
1. Add small reflecting particles in the stratosphere.
2. Add more clouds in the lower part of the atmosphere.
3. Place various kinds of reflecting objects or diffraction gratings in space either near the earth or at a stable location between the earth and the sun.
4. Change large portions of the planet's land cover from things that are dark and absorbing, such as trees, to things that are light and reflecting, such as open snow-cover or grasses.
1. Stratospheric aerosols
Adding more of the right kind of fine particles to the stratosphere can increase the amount of sunlight that is reflected back into space. This is not hard to do, nor all that expensive. David Keith has suggested that it should be possible to create microscopic reflecting composite particles that would be self- orienting and self-levitating, and thus might not have to be replaced very frequently. Sources: NASA; Boeing; www.carlstumpf.com A single nation could do these within it's national boundaries
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2. Add more clouds
John Latham of the National Center for Atmospheric Research has proposed that salt from seawater could be effectively used as cloud condensation nuclei.
Stephen Salter of the University of Edinburgh has designed an "albedo spray vessel" which would put the Latham theory into practice.
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3. Reflectors or diffraction gratings in space
[atsimg]http://files.abovetopsecret.com/images/member/7604fdb4007a.png[/atsimg]
[atsimg]http://files.abovetopsecret.com/images/member/60cb4bd22bd0.png[/atsimg]
4. Change land cover
For example, when the boreal forests were removed in the NCAR coupled ocean- atmosphere climate model, air temperature fell 12°C at 60°N in April and were still as much as 5°C colder in July.
He provides no pictures for this one but I provide it particularly chilling. Since when was deforestation a good thing???
All of this is predicated on man-made global warming. A still unproven postulate. Climate-gate has shown the they were cooking the books. It was warmer in the middle ages than now, all the planets are currently warming suggesting unknown solar or galactic influences we do not yet understand.
This presentation is indicative of most discussions on global warming. The injection of aerosol particulates seems to be the one most discussed and relatively inexpensive:
The cost of geoengineering
As noted in the briefing paper: A National Research Council 1992 report estimated the undiscounted annual costs for a 40-year project to be $100 billion.
Teller, Wood and Hyde have suggested that well designed systems might reduce this cost to as little as a few hundred million dollars per year.
If we take cost to be between $100 million and $100 billion per year
www.abovetopsecret.com...
Originally posted by Phage
They're going to spray water into the air?
Horrors! A small scale feasibility test.
Originally posted by Phage
reply to post by Deafseeingeyedog
Do you see something scary about spraying water into the air?
The water will not affect the climate. Rather, the experiment is a proof of principle to show that we can pump large quantities of material to great heights. If it succeeds, a larger-scale version could one day pump sulphate aerosols into the stratosphere, creating a sunshade that will offset the greenhouse effect.
Originally posted by Phage
They're going to spray water into the air?
Horrors! A small scale feasibility test.
If it succeeds, a larger-scale version could one day pump sulphate aerosols into the stratosphere
Originally posted by Phage
reply to post by burntheships
If it succeeds, a larger-scale version could one day pump sulphate aerosols into the stratosphere
You mean like volcanoes do?
Any such large scale operation is far from being implemented or even considered a good idea by most.edit on 9/12/2011 by Phage because: (no reason given)