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"The studies reviewed here suggest that sulphate aerosols can counteract the globally averaged temperature increase associated with increasing greenhouse gases, and reduce changes to some other components of the Earth system. There are likely to be remaining regional climate changes after geoengineering, with some regions experiencing significant changes in temperature or precipitation. The aerosols also serve as surfaces for heterogeneous chemistry resulting in increased ozone depletion. The delivery of sulphur species to the stratosphere in a way that will produce particles of the right size is shown to be a complex and potentially very difficult task. Two simple delivery scenarios are explored, but similar exercises will be needed for other suggested delivery mechanisms. While the introduction of the geoengineering source of sulphate aerosol will perturb the sulphur cycle of the stratosphere significantly, it is a small perturbation to the total (stratosphere and troposphere) sulphur cycle. The geoengineering source would thus be a small contributor to the total global source of ‘acid rain’ that could be compensated for through improved pollution control of anthropogenic tropospheric sources. Some areas of research remain unexplored. Although ozone may be depleted, with a consequent increase to solar ultraviolet-B (UVB) energy reaching the surface and a potential impact on health and biological populations, the aerosols will also scatter and attenuate this part of the energy spectrum, and this may compensate the UVB enhancement associated with ozone depletion. The aerosol will also change the ratio of diffuse to direct energy reaching the surface, and this may influence ecosystems. The impact of geoengineering on these components of the Earth system has not yet been studied.
According to the chemtrail conspiracy theory, long-lasting trails left in the sky by high-flying aircraft are chemical or biological agents deliberately sprayed for sinister purposes...
Although proponents have attempted to prove that the claimed chemical spraying does take place, their analyses have been flawed or based on misconception.
Believers in the [chemtrail] conspiracy theory speculate that the purpose of the claimed chemical release may be for solar radiation management , psychological manipulation, human population control, weather modification, or biological or chemical warfare, and that the trails are causing respiratory illnesses and other health problems.
Contrails are formed at high altitudes (5–10 miles or 8–16 kilometres) and if any chemicals were released at such altitude they would disperse harmlessly and fall many hundreds of miles away, or degrade before touching the ground.
Patrick Minnis, an atmospheric scientist with NASA's Langley Research Center in Hampton, Virginia, is quoted in USA Today as saying that logic does not dissuade most chemtrail proponents: 'If you try to pin these people down and refute things, it's, Well, you're just part of the conspiracy.' he said.
...as it turns out, some people believe that a global campaign is already underway to have aircraft spray the air with chemicals — whether to control climate change or for other, more sinister purposes. Meet the “chemtrails” crowd, who posit that governments, scientists and other institutions are using airplanes’ “chemtrails” — basically contrails that are allegedly laced with chemicals — to alter the climate, create extreme weather, poison people, or even control our minds.
A very tiny subset of the chemtrails activists could have a more chilling effect on the field of geoengineering, Keith worries. He notes that he continually receives nasty emails and voice messages from chemtrails believers, and he has even received multiple threats of violence that have prompted him to contact the police.
originally posted by: OneManArmy
As for the geoengineering side of chemtrails. Everything about the release of agents into high altitude as a means to prevent global warming is a proposal, now I have no doubt that some mad scientists somewhere in the world have probably tried it, as a small study to find if the side effects really are bad. But can I prove it? No.
If someone could there wouldnt even be a debate.
originally posted by: smurfy
originally posted by: OneManArmy
As for the geoengineering side of chemtrails. Everything about the release of agents into high altitude as a means to prevent global warming is a proposal, now I have no doubt that some mad scientists somewhere in the world have probably tried it, as a small study to find if the side effects really are bad. But can I prove it? No.
If someone could there wouldnt even be a debate.
We know David Keith was to do just that in Mexico 2013...nobody's said it didn't happen so far?
originally posted by: DenyObfuscation
If he did, it would mean a proposed method of SRM has actually been tested in the air, at a very small scale. If that test did occur, I'd like to know about it.
originally posted by: FamCore
a reply to: Petros312
Great analysis on how that Wikipedia web page uses an "expose' tone" or perspective in writing about the Chemtrail Conspiracy Theories. The way something is written truly does have a significant impact on how that information is received by the readers.
The tone itself is demeaning and condescending to me, the bias is dripping from my computer screen as i read that type of thing. S & F
originally posted by: Chadwickus
a reply to: ~Lucidity
What do germ tests have to do with geoengineering?
Going on what the OP is saying, you must be a debunker trying to stigmatise the subject..
originally posted by: Chadwickus
a reply to: ~Lucidity
What does yours?