The team behind this is world-class. Among other things, they have developed a python library that could be used to model contrails in your own projects.
Are there other sites that can suggest how much of an issue it is, and how much flight plan tweaking could improve this.
Remember kids a 1° C rise in temperature can mean 7% more water vapour in the air, and with water vapour being a greenhouse gas itself this can cause heating and holding yet more water.
I'm out of the loop, didn't the government admit this stuff a few years ago?
I was at a presentation in Croatia recently about weather modification in Yugoslavia. This is considered public knowledge there. When Yugoslavia fell apart, Croatia was no longer permitted to engage in weather modification.
The main method discussed was the use of small rockets. It was used for agricultural purposes.
The problem is the unsubstantiated logical leap from "weather modification is possible" to "contrails behind commercial aircraft are secretly dispersing chemicals in order to control weather".
If I was an evil government figure trying to secretly control weather, there are better ways of doing that (e.g. drones, rockets) than orchestrating a conspiracy that requires hundreds of thousands of people to stay quiet for decades.
Water vapour absorbs the thermal radiation (heat trying to escape earth) better than it absorbs sunlight (heat trying to enter earth). Therefore, the more water vapour in the atmosphere, the stronger the greenhouse effect.
They don’t cause net warming, it’s transient. If we stopped flying tomorrow it would go away quickly. But we keep flying.
But even with that the amount of warming this continuous effect creates is quite small and negligible compared to greenhouse gas warming and isn’t really worth talking about.
I think this link hit HN in part due to the new Simon Clark video on contrails which mentioned it. Simon discusses the claim that contrails can be avoided for a small fuel penalty, reducing the overall effect on climate change a given flight would have. Apparently some airlines are already exploring this and Google includes contrail impact estimates on their flight search. So maybe it is worth talking about.
Yes, also a mushroom cloud from a nuclear blast blocks light from passing through which reduces heating on the ground whereas contrails are thin which lets light through but still retains heat below them.
Would be great for shiptracks, too— which used to mitigate 1/3 of the warming impact of maritime shipping — until the 2022 clean fuel standards were implemented.
https://py.contrails.org
Are there other sites that can suggest how much of an issue it is, and how much flight plan tweaking could improve this.
Remember kids a 1° C rise in temperature can mean 7% more water vapour in the air, and with water vapour being a greenhouse gas itself this can cause heating and holding yet more water.
I guess the map is posted today due to this recent video (worth a watch): https://youtu.be/QoOVqQ5sa08?si=sGK9Q9tUoFOW1QZg
Downvoted for this, at the very least, and also downvoted for the fact you think you're entitled to an explanation even with your tone.
There's plenty of basis for thinking it's uninformed or intellectually dishonest conspiracy mongering.
And please don't rant at HN.
I was at a presentation in Croatia recently about weather modification in Yugoslavia. This is considered public knowledge there. When Yugoslavia fell apart, Croatia was no longer permitted to engage in weather modification.
The main method discussed was the use of small rockets. It was used for agricultural purposes.
If I was an evil government figure trying to secretly control weather, there are better ways of doing that (e.g. drones, rockets) than orchestrating a conspiracy that requires hundreds of thousands of people to stay quiet for decades.
Why nuclear blasts - that also introduce lots of particles in atmosphere cause a cooling effect - "nuclear winter"?
https://en.wikipedia.org/wiki/Electromagnetic_absorption_by_...
https://en.wikipedia.org/wiki/Greenhouse_effect
But even with that the amount of warming this continuous effect creates is quite small and negligible compared to greenhouse gas warming and isn’t really worth talking about.
https://youtu.be/QoOVqQ5sa08