As far as I know acceptable aircraft emissions allow up to 3,000 ppm of sulfur in the fuel while sulfur content in ground based diesel fuel is in the double digits .
http://theenergycollective.com/jemi...lfur-reduction-standard-development-misguidedU.S. 2012 Petroleum Consumption and Associated Sulfur Emissions
Then we do agree to disagree.
1 or 2 are not ugly but a complete whiteout is quite ugly .
It is true cirrus cloud bank blooms may or may not be triggered by a persistent contrail/s and low level cloud cover never is; however, long haul aviation creates/mediates persistent contrails and sometimes they are very numerous and persistent even when natural cirrus clouds are minimal or don't form at all.
I know more now about clouds and contrails and their effect then I need to know . They are ugly and unnatural . I don't believe that air travel is a luxury. Everyone of those contrails is pollution .
Yea that is nit picking...................................................................
Exhaust is pollution. How is that cloud formed ? around particulate coming from the exhaust . Its not a steam engine . The ice crystals do need a nuclei to form a cloud ? right ?
I beg to differ. A pollutant is something that is introduced into the natural environment that causes an adverse effect. In the context of this thread that certainly is a contrail. A pollutant does not necessarily have to be a chemical and can be a natural compound (or even heat).
Once they perfect this then contrails will no longer be a problem .
So water vapor is a pollutant ? Wow that is crazy .
http://skepchick.org/2014/02/the-worst-thing-brian-dunning-has-done-for-skepticism/Brian Dunning is fairly prominent amongst skeptics for his podcast, Skeptoid. He’s prominent amongst FBI agents for his conviction for wire fraud. (The case has been ongoing since 2011, but Dunning’s sentencing is April 28, 2014.) For those who are unfamiliar with the skeptical community, it is based in large part on exposing frauds, so this criminal’s continued popularity with skeptics is a fascinating study in human nature.
OT- lol. Saturday I saw (except for aerodynamic contrails and uniclar? clouds) Every single plane and cloud phenomenon discussed on Metabunk in one afternoon! a sun halo and rainbow clouds incl! low planes with no contrails, med. planes with regular contrails persistant contrails blowing across the sky (and they really DO stay parallel and in totally straight lines). They were cool cause I had my friends cracking up as I pointed out cloud types etc. except yes the contrails are ugly generally unless they feather out.
He didn't say it was a debunking site and put it second between all the other chemtrail sites . Watched it 3 times . Id be pissed and ask him to remove it .
When are they going to start regulating when I pee or fart or exhale ?
Disagree!
I don't think one can easily quantitate the relative amount of Cirrus Clouds and Cirrus Cloud Banks from other cloud cover. Never-the-less, I think NASA and IPCC have both published papers/studies addressing a concern on the future impact based on the expected increase in persistent contrail and contrail induced cirrus.
Normal cirrus cloud formation is not the issue. The issue is the possible and probable increase of cirrus clouds and cloud banks because of an increase in aviation. If you can make the argument that aviation has not increased the incidence of cirrus clouds and cloud banks then I would agree with you.
Hence your argument is the cirrus increase is trivial and insignificant because of their short duration of clouds and the enormity of the atmosphere and surface area of the earth that could be affected. Seems similar arguments can and have been made regarding polluting the ocean or fresh water supply. The dilution factor and pollution half-life alone will take care of the problem so don't make a big deal out of small contributions. At first this was the theory even amongst scientists; however, me thinks these arguments are losing traction and will not persist as pollution, warming and CO2 concentrations continue to rise.
And likewise, the increase in aviation and a higher probability of cirrus clouds do not disappear -they continue to exist; unless, of course, aviation is curtailed or mitigation practices are engaged in.
