About a month ago, I gave a presentation in Portland in which I described my prediction for the upcoming winter. Afterwards a lady asked a question I’ve heard plenty of times – but not for awhile. She asked, “How do ‘chemtrails’ affect climate?”

Mind you, not ‘contrails,’ but ‘chemtrails.’ Contrails (short for “condensation trails”) are visible trails of condensed water created by high-flying aircraft. Water vapor is a major component of aircraft exhaust, and when the vapor comes in contact with the very cold air at high altitudes, it condenses, forming clouds. The clouds may be made up of tiny water droplets or very small ice crystals, depending on the temperature. Contrails most often occur at heights above 25,000 feet and at temperatures of less than -40 deg F.

But about 12 years ago a theory was developed that suggested that some contrails were being intentionally created or enhanced. The “chemtrail” theory suggests that some contrails are caused by chemical or biological agents deliberately sprayed at high altitudes. The purpose of such spraying remains a mystery, according to this conspiracy theory.

The chemtrail theory spread quickly after its genesis, thanks to the Internet and radio talk shows. Thousands of complaints and questions were sent to federal agencies, who have consistently denied any involvement.

Chemtrail buffs differentiate chemtrails from ordinary contrails by reporting that they sometimes persist in the sky for hours, often with criss-crossing, grid-like patterns, or parallel stripes which merge together and form large clouds. Other features that distinguish a chemtrail from a contrail are the presence of colored prisms in the trails; large numbers in a single area; or lingering tracks left by unmarked or military airplanes flying in atypical altitudes or locations.

One of the publications which inspired the chemtrail theory was a 1996 report by the Air University called “Weather as a Force Multiplier: Owning the Weather in 2025” in which modification of weather was viewed as a possible offensive and defensive weapon in time of war. The report stated that by 2025 it may be possible to

cause flooding
cause drought
modify or enhance storms
increase or decrease clouds or fog

to name just a few. Each of the above could have profound military effects. The Air Force denies it is conducting such experiments.

According to some accounts, chemtrails result from such chemicals as barium and aluminum salts, polymer fibers, thorium, or silicon carbide. Others allege that the skies are being seeded with electrical conductive materials as part of a large upper-atmosphere research program called the High Frequency Active Auroral Research Program (HAARP). The latter inspired a conspiracy book called “Angels Don’t Play This HAARP.”

Why would the government resort to such measures? Those who believe in the conspiracy list military weapons testing, chemical population control, or measures to mitigate global warming as possible reasons.

In 2001, United States Congressman Dennis Kucinich introduced a bill that would have prohibited space-based weapons. Chemtrails were listed as one of a number of possible weapons that would be banned. The bill received an unfavorable evaluation from the United States Department of Defense and never made it out of committee. Subsequently, Kucinich tried three times, without success, to enact a Space Preservation Act, but chemtrails were not mentioned.

A couple of references I’d suggest if you want to learn more:

Chemtrail Central
Chemtrail controversy


About George Taylor

Climatologist, husband, father (3), grandfather (2)
This entry was posted in Weather Matters and tagged . Bookmark the permalink.

2 Responses to Chemtrails


  2. Paul Rubino says:

    The truth is very important …

    ChemTrails and ChemClouds Debunked: (video)

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