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Grasshopper Kaplan's avatar

Call it skypainting, and make it stop

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Jeff M's avatar

Excellent job here Jim.

Jim has it exactly right. The main problem we have is the pollution from the under-refined jet fuel, and people don't quite get it. There are all kinds of metals in it. They spew toxins on us every second the engine is on. I was recently in Guadalajara Mexico and we deboarded on the runway instead of a skyway. You would not believe the stench of fuel on that tarmac. It just about knocked you out. You don't get to. smell that here in the states.

I was trained as a meteorologist by the US Navy. One of my duties was to launch 'weather balloons' with their attached measurement device, the radiosonde. It gave us, the meteorologists that briefed the pilots on the weather on their mission, the knowledge of where the aircraft should NOT fly because we knew where the contrails would be found. Dead giveaway even for someone not equipped with radar. So if you look in the sky, look for the bright white cirrus clouds. If they are there in view there is a chance for an aircraft to leave a linear cloud, a contrail. If they are not there you will NOT see a persistent contrail. I picked this up again after years of not using it and it has been over a 2 year study to ascertain all of this again, years after using it for my job. Nothing has changed.

The Windy app has a 'Contrail Finder'. I will be doing a video on that in the near future to show you how to use it, with my friend Stella Q on her Youtube channel. We did a video on c-trails in the fall when one of the hurricanes dissipated off of the west coast. And we did 2 videos on clouds in other 'Sky Wise' videos. One was on the cloud types, and the other on how they form.

There were charts before this cloud finder plugin for Windy that we used to determine if contrails were possible, called Appleman charts that the military developed. It was about the survival of aircraft, and it still applies today. The physics have not changed. It is about the conditions in the atmosphere. It is about the temperature and humidity combination.

If I were to interview people on the street today, and point to that bright white feathery cloud in the sky and ask what type of cloud it was maybe 10% of people could answer that question. And if I asked how high it is, in thousands of feet, maybe 1% could answer it. Why? Because very few were taught weather in school. No fault of your.

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