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lucrum · 10-18-2009, 12:31 PM

Another thought:

We can all agree that water vapour condensing in the troposphere makes clouds. We can agree that vapourized water from a jet engine can condensate into cloudlike structures IF the right conditions are there.

We know that above 7000m, Cirrus clouds occur. They are usually thin and widely spread, because the concentration of water vapour is sparse at this altitude. What I make of this, whenever there is no cirrus clouds occuring, conditions for these are not met above the mentioned altitude. This means the air contains so little vapour that clouds cannot be formed.

With this in mind, it should be logical to think that the vapour leaving the exhaust of a plane at marching altitudes would make thin, short contrails based on the claim from NOVA that contrails "feed" off the existing vapour in the air. No clouds = little to no water vapour to "feed" on and they would dissipate quickly.

On this very day, we have loads of cirrus formations in our sky. Only just did I see a plane fly through these. From what I've just learned, the likelyhood of this plane to make a long, persistent contrail should be quite high. However, this plane made a thin, but slightly longer than normal contrail. It dissipated within a minute.

It might be that planes make cirrus clouds, but how can they make a cloud formation which initially isn't there because the conditions for them being there is not met?

10-18-2009, 12:31 PM	#45
lucrum Avalon Senior Member Join Date: Sep 2008 Location: Norway Posts: 209	Re: Chemtrails Another thought: We can all agree that water vapour condensing in the troposphere makes clouds. We can agree that vapourized water from a jet engine can condensate into cloudlike structures IF the right conditions are there. We know that above 7000m, Cirrus clouds occur. They are usually thin and widely spread, because the concentration of water vapour is sparse at this altitude. What I make of this, whenever there is no cirrus clouds occuring, conditions for these are not met above the mentioned altitude. This means the air contains so little vapour that clouds cannot be formed. With this in mind, it should be logical to think that the vapour leaving the exhaust of a plane at marching altitudes would make thin, short contrails based on the claim from NOVA that contrails "feed" off the existing vapour in the air. No clouds = little to no water vapour to "feed" on and they would dissipate quickly. On this very day, we have loads of cirrus formations in our sky. Only just did I see a plane fly through these. From what I've just learned, the likelyhood of this plane to make a long, persistent contrail should be quite high. However, this plane made a thin, but slightly longer than normal contrail. It dissipated within a minute. It might be that planes make cirrus clouds, but how can they make a cloud formation which initially isn't there because the conditions for them being there is not met?