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Mikeultra
Did not see many chem-trails in my travels today. Saw this one flying high with a normal contrail which disappeared quickly, unlike chem-trails.
At 40,000 feet it should be real cold. Why is there no "persistent contrails" is what I'd like to know? The U.N. must be getting nervous. We can't fund the chem-trails much longer. What a relief! Fresh air!
At 40,000 feet it should be real cold. Why is there no "persistent contrails" is what I'd like to know?
www.atmos-chem-phys.net...
The formation of persistent contrails occurs when the relative humidity with respect to ice (RHI) reaches or exceeds 100%.
AndyMayhew
reply to post by NONPOINT21
But why would anything in the US affect a global operation? 98% of the planet is not the USA
Or did you think that chemtrails only affected 2% of the planet?
libertytoall
reply to post by Aloysius the Gaul
I don't want anyone to get the wrong assumption that I'm blindly falling into the chemtrail crowd I simply haven't heard a convincing enough argument from either side. It certainly is suspicious looking which is why the conspiracy must exist to begin with. If I can identify the aircrafts markings on it's tail wing enough to make out colors and logo is there that big of an altitude difference? I would accept 1 - 2 thousand feet but not 10,000.. And when I say I witness 10 planes and then all of a sudden there's one with a trail I'm talking in a matter of 30 minutes.. The sky is very busy above my house and most aircraft are at similar altitudes 10 - 20 minutes before landing or after takeoff. Many times the plane is slightly turning and the trail follows and then 10 minutes later another plane will travel through the same "general" area and nothing. I almost never see the evaporating contrail I was so used to seeing growing up.edit on 15-10-2013 by libertytoall because: (no reason given)
waynos
libertytoall
reply to post by Aloysius the Gaul
I don't want anyone to get the wrong assumption that I'm blindly falling into the chemtrail crowd I simply haven't heard a convincing enough argument from either side. It certainly is suspicious looking which is why the conspiracy must exist to begin with. If I can identify the aircrafts markings on it's tail wing enough to make out colors and logo is there that big of an altitude difference? I would accept 1 - 2 thousand feet but not 10,000.. And when I say I witness 10 planes and then all of a sudden there's one with a trail I'm talking in a matter of 30 minutes.. The sky is very busy above my house and most aircraft are at similar altitudes 10 - 20 minutes before landing or after takeoff. Many times the plane is slightly turning and the trail follows and then 10 minutes later another plane will travel through the same "general" area and nothing. I almost never see the evaporating contrail I was so used to seeing growing up.edit on 15-10-2013 by libertytoall because: (no reason given)
I live in an area between Leeds, Doncaster and Manchester airports, the latter is furthest away at around 80 miles away. Whenever I've been observing air traffic none of the aircraft using any of those airports has ever left a contrail. All the contrails have been left by traffic passing higher overhead between Europe and America.
When a plane is flying at 17,000ft following take of from Manchester it IS visually obvious that it is lower than a plane at 34,000, but on some days planes at 27,000 ft have not left a trail either, and this is impossible to judge visually.
You also mentioned seeing planes of the same type. Most airliners follow a pattern these days of two engines mounted under the low swept wings with a swept tail. Are you confident you would know a 737 from a higher flying 767 or even slightly higher 777? That's not meant to be cheeky, but there is a degree of difficulty in that.
Mikeultra
At 40,000 feet it should be real cold. Why is there no "persistent contrails" is what I'd like to know? The U.N. must be getting nervous. We can't fund the chem-trails much longer. What a relief! Fresh air!
waynos
Mikeultra
At 40,000 feet it should be real cold. Why is there no "persistent contrails" is what I'd like to know? The U.N. must be getting nervous. We can't fund the chem-trails much longer. What a relief! Fresh air!
If can get your head around this you are almost there Mike.
You are right, it is always very cold at that height and the trail will always freeze, as it is doing in your photo.
The variable is the relative humidity with regard to water and ice (RHW and RHI). When the RHI is lower than 60%, RHW less than 100%, the air is dry enough for the ice to sublimate. Therefore the trail disappears. This is also why people make the mistake of thinking there were fewer planes in the sky as all the trails left by the other traffic are long gone, often as soon as the plane itself has passed over.
When the RHI/RHW is high enough, it means the air is already holding all the water it can, therefore the ice cannot be sublimated and the trail cannot do anything but sit in the sky for hours. This can also tip the balance for natural cirrus formation and trigger that process, which is when they spread and form cloud cover.
It's what contrails do.
So how do we explain a 95 degree sunny day, completely blue skies, and a plane at less than 12,000 feet making a sustained contrail?
And then those trails can move, expand, change altitudes, and hold together?? And then a aircraft can fly through an area where the contrail exists or existed and make no contrail?? It's such a sci fi phenomenon..
waynos
reply to post by libertytoall
And then those trails can move, expand, change altitudes, and hold together?? And then a aircraft can fly through an area where the contrail exists or existed and make no contrail?? It's such a sci fi phenomenon..
They can move in the winds, which can be very powerful at those heights, why wouldn't they?
If they are expanding in a region where the conditions support that then there is every chance they will expand into each other, again, why wouldn't they?
who says they change altitudes?
And no, if the conditions support persisting contrails, no plane will pass through them and NOT leave one, it must be higher or lower.
It's all sci, no fi required.edit on 16-10-2013 by waynos because: (no reason given)