Where have the Condensation Trails Gone?

[Asterix, the former Gaul.]

Before COVID we used to get loads of con-trails over York, especially this time of year. Of course they stopped during the pandemic, but they don’t seem to have come back.

Yesterday there was a clear blue sky and not a single trail, except one far to the south, almost on the horizon and left by a very fast aircraft.

Where have they gone?

[hellymedic]

They still exist but their absence suggests low atmospheric humidity.

[ScumOfTheRoad]

I read a recent article on the use of computer simulations to plan aircraft routes to minimise contrail formation.
Darned if I can find it this morning....  IIRC this was a recent news item on hpcwire.com

[rogerzilla]

The Illuminati have started using an additive to disguise them, so you don't know you're being sprayed.  Or 5G re-vaporises them.  Or there is a shortage of mind control drugs.

[Cudzoziemiec]

It took over a hundred years from the start of aviation to come up with covid. The trails have done their job and the next plandemic will come from underground – the Channel Tunnel was a practice, but once HS2 is complete, it's out.

Yesterday evening I saw a giant screwdriver (Wera brand) floating in the sky, and later a bright blue goose with two heads. These things exist but are only revealed to the enlightened.

(click to show/hide)

[Jaded]

That is a CONtrail filter, Cudzo.

[Cudzoziemiec]

What's the difference between a Contrail and a Torytrack?

[Canardly]

About £100Bn.

[T42]

Possibly one of the few benefits of climate change.  10 years back it was impossible to take a landscape photo without airline graffiti.

[ian]

They’ve finally started to use see-through chemicals in the chemtrails.

[Cudzoziemiec]

No, it's the chemicals have finally taken effect on your visual cortex. They're still there in the sky, you just think you can't see them.

[Asterix, the former Gaul.]

I read a recent article on the use of computer simulations to plan aircraft routes to minimise contrail formation.
Darned if I can find it this morning....  IIRC this was a recent news item on hpcwire.com

You are the winner:

AI helps airline pilots avoid areas that create polluting contrails
Experiment by Google and American Airlines reduces vapour trails, which are a source of global heating


Yesterday on a sunny afternoon not a single con-trail appeared.

The experiment found that flights needed to burn 2% more fuel to avoid the contrails. However, Google said that the total increase in fuel burn across all of an airline’s flights could be limited to 0.3% because the majority of contrails are caused by a small proportion of flights.
The cost of avoiding the contrails could be between $5 (£3.90) and $25 per tonne of CO₂ equivalent, said Google. That could make it competitive with other forms of reduction in heating effects.

An IPCC report, published last year, said that contrail avoidance could take “up to a decade to mature”, but the Google experiment suggests the technology could be ready earlier than that.

[Salvatore]

Above my house this morning (click on image for youtube video)



AI my arse

[Asterix, the former Gaul.]

So where are you?

[Salvatore]

About 35 km SW of Heathrow, but I don't these were going to/from Heathrow.

[vorsprung]

The Illuminati have started using an additive to disguise them, so you don't know you're being sprayed.  Or 5G re-vaporises them.  Or there is a shortage of mind control drugs.

simply use a can of Ubik

[Asterix, the former Gaul.]

About 35 km SW of Heathrow, but I don't these were going to/from Heathrow.

35 km is probably too close to the world’s 8th busiest airport for AI to have a chance.