1) "Chemtrails" are just normal condensation trails.

2) The so-called chemtrail haze is just virga.

3) Criss-cross patterns, asterisks, As, Vs, Xs in the sky form because planes follow radio beacons.

4) Contrail persistence is a function of air relative humidity.

5) On/off trails occur because the plane flies through pockets of dryer air.

6) There is the storage problem addressed in the "Problem for the chemtrail believers" thread (some boring math here).

7) Aluminum oxide emission is caused by SRMs.

8) Barium compounds emission is caused by mining and refining industrial processes.

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Never stop questioning.

http://www.circlemakers.org

Maybe. I think it's more likely that in this case, the plane is flying through horizontal "rolls" in the atmosphere. Those rolls are caused by vertical wind shear and result in up & down motion. Downward motion tends to dry the air (due to dry-adiabatic* heating and no change in moisture content), while upward motion tends to make it more humid (same reason, in reverse). Even on a fairly small scale, if the air is near saturation, this can lead to the sort of on/off trails you're describing.

Otherwise, the list looks good... except that I have no idea what SRMs are (maybe that's just because I just finished a midnight shift at work and the brain is barely functional).... :-s
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* - When air descends, the increase in pressure (alone) causes the temperature to rise, according to the Ideal Gas Law. Raising the temperature, while holding moisture content the same, results in lower relative humidity. Ascending air undergoes the opposite effect until it reaches saturation, then heat exchanges due to condensation make things more complicated.

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"I am Meteora, supreme goddess of weather" - Meteora, in The Unchained Goddess

One nice thing about being a meteorologist who also likes astronomy is that the sky is always interesting!

What about this response from a "chembeliver".

A real stretch,dont you think! =D>



"Chemtrails consist of dihydromonoxide. This chemical is called the "Silent Killer" and you can learn more at: www.dihydomonoxide.org

A lot of people believe there is a separate tank and spraying system for chemtrails. This is not the case. Chemicals in the fuel are combined with the air in the combustion process to create dihyromonoxide which is sent out the exhaust. The flight and ground crews never know they are delivering chemical death. This significantly reduces the number of people in on the conspiracy.

Soon after leaving the engine the dihyodromonoxide turns from gaseous to its solid form which is naturally white. Barium clouds would be aquamarine in color."

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I still await the compelling Exhibit A.

Just leave him a hurricane to stop, that would take care of him pretty quickly...

Here a question I would ask the chemtrail dudes

-what exactly are the chemicals used in the trails?

__________________
here we go, the world is spinning
when it stops, it's just beginning

sun comes up, we laugh and we cry
sun goes down, and then we all die

Touched by his noodly appendage

well, then...

What did you say to the dude? Tell him how not only is the government placing this deadly chemical into the contrails of planes, but also trying to fill his food with soduim chloride, acetic acid, pectic acid and methanethiol :wink:

__________________
here we go, the world is spinning
when it stops, it's just beginning

sun comes up, we laugh and we cry
sun goes down, and then we all die

Touched by his noodly appendage

I feel a need to dose myself with some more 3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione. 8)

Psi-less

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"Given only the ships and right sails for the heavenly space, there will also be men unafraid of the terrible distances."--Kepler, to Galileo

I hear they're putting that in coffee and tea now. Ang get this: they're even going after kids by putting it in soft drinks!

Hrmph! Back in my day, you had to walk three miles uphill in waist deep snow, stand in line for 12 hours and *beg* for the opportunity to work an 18 hour shift in the 3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione mines. Now just anyone can buy it without the 3 blood tests, several invasive procedures and 2 doctors' signatures on a note! What's the world coming to? :wink:

Psi-less who still needs about another cup.....
edited to add a missing "the"

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"Given only the ships and right sails for the heavenly space, there will also be men unafraid of the terrible distances."--Kepler, to Galileo

Are you guys serious!


8-[



Thats it,Im never going to eate,drink or breath again.

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I still await the compelling Exhibit A.

They do it up here. It works.
http://www.swc.state.nd.us/arb/ndcmp.html

Quite often when I am out doing SKYWARN I'll see these guys working a storm. It is quite interesting.

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Be very, very careful what you put into that head, because you will never, ever get it out. ---Cardinal Wolsey (1475-1530)

Greetings.

Try posting those very sensible and realistic causes and explanations at chemtrailcentral.com. You will be sure to be classified as a (horrors!) debunker and will be subject to many attacks, personal and otherwise. Go ahead, I dare ya! :wink:

Regards, tbm

You can't. Any argument you bring just proves you are either a dupe, or a part of the conspiracy. Just give it up.

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Fiction has to be plausible. Reality is under no such constraint.

Those are some spectacular chem..., er, contrails!

As a pilot, I seen contrails all the time. Why people can't seem to understand that one of the by-products of burning jetfuel is water vapor, and that we're dealing with temps between -20 and -80 degrees at altitude, which turns water vapor into instant Folger's Freeze Dried Crystals without the flavor, I'll never know.

You're right - it's because they believe. When people believe what they want to believe, nothing will ever change their mind.

Here's another theory: Carbon dioxide freezes at -110 degrees F (-79 degrees C) to become dry ice.

What would happen if not only the water vapor in the jet exhaust crystallized, but the carbon dioxide crystallized, too? How long would the chem, er, contrails persist them?

Regardless, given the right conditions (relatively humid air) and cold temps, contrails can persist for many hours, and can actually "seed" additional condensation from humidity in the air, so they can actually grow into large contrails, particularly if the air temp is dropping (such as when you have high cirrus forming which may block some solar radiation).

Hard to say, but it doesn't matter. At latitudes where people actually live, the temperature at flight level never gets that cold.

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"I am Meteora, supreme goddess of weather" - Meteora, in The Unchained Goddess

One nice thing about being a meteorologist who also likes astronomy is that the sky is always interesting!

You're right. It's about 52 below at FL 390 these days above Montana.

I have seen it colder than 110 below at FL 430, but we weren't over the US at the time... 8)

Greetings.

I just saw a show on the History channel in which they showed how Boeing 747s are being modified to fight forest fires. The rates in which they can dispense fire retardents and water are truly astounding. Let me be the first to suggest that they could also be used to disperse (insert chemtrail woo-woo subsance here) over the sheep-like, un-informed populace in even greater amounts.



Regards, tbm

Correct me if I'm wrong, but doesn't carbon dioxide need to be under pressure to freeze?

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"Eternal vigilance is the price of supremacy"
------------Mark Twain

"Women are like Voltron. The more you can hook up, the better it gets."

If they are dispersing chemicals in such great amounts though, they can't disperse for very long. The only explanation for such long continuous trails is water vapor from normal jet exhaust.

__________________
"Eternal vigilance is the price of supremacy"
------------Mark Twain

"Women are like Voltron. The more you can hook up, the better it gets."

If they are dispersing chemicals in such great amounts though, they can't disperse for very long. The only explanation for such long continuous trails is water vapor from normal jet exhaust.

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