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East County News Service
Photo credit: Rebecca Jefferis-Williamson
March 8, 2017 (La Mesa) – Rebecca Jefferis Williamson sent in this photo of trails left by airplanes over Mt. Helix, taken from the Fuerte Street bridge this morning. Some have called these chem trails but they are actually simply water vapor that has condensed/frozen due to cold temperatures high in the atmosphere. The scientific name is contrails.
Numerous residents in the Mt. Helix and Spring Valley area have recently complained of increased flight traffic over their communities due to a recent FAA change in flight patterns to or from Lindbergh Field. This image clearly shows a significant number of flights simultaneously traversing the area.
Comments
contrails
Comment deleted.
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Courteous dialogue and differeing opinions are welcome, preferably backed up with actual facts and links to scientific info on something like this.
Contrails?
Contrails?
Continued
Cars
You see it when the engine had been started and in cold weather. Do you have any research to add?
Busy day
Contrails first seen during WWII. Makes us aware of the actual volume of air traffic.
I often see items regarding a conspiracy. It is a ridiculous as global warming.
Contrails
Contrails is the correct term and the planes are flying at cruise altitude of around thirty thousand feet, five or six MILES high. They are caused by WATER vapor in the engine's exhaust that condenses in the cold, dry air.
You can see the same effect from an automobile exhaust in cold weather, nothing to see here, move along....
Contrails
Thanks, I've added the scientific explanation into the story
and adjusted the header.
Chem Trails???
Never heard "contrails."
We went with the common term but to be clear, I haven't heard anything convincing in the conspiracy theories and am not an advocate of wild, unproven claims.
Plane Traffic
The plane trails were definitely taken over Mt. Helix.
Rebecca and another of our writers were on their way to our studio on Mt. Helix and the time noted on her photo was a couple of minutes before they arrived here this morning, around noon.
The planes may have been arrivals rather than departures to Lindbergh, but whichever the case, it does seem to confirm why some residents might issues with noise from numerous planes.
Rebecca didn't have an agenda on this; (she didn't even know of the controversy here). She just thought it was an interesting photo!
Also, I personally observed multiple chem trails this morning whle driving back to Mt. Helix from La Mesa a short time before Rebecca snapped this photo.