Live data from Hacker News

Contrails Map

map.contrails.org

21–30 of 75 posts

Re: Contrails Map

#21

It states that half of aircraft pollution is from contrails made of aircraft soot. I’d like to see the literature and discovery of aircraft soot. As an engineer who has built aircraft, I find this fascinating. I would like to measure my amount of soot. How does one go about measuring how much soot I have? Obviously if my exhaust ports are black that’s bad but I’m genuinely curious about this as I’ve always assumed “b…

Night trains

Re: Contrails Map

#22

It states that half of aircraft pollution is from contrails made of aircraft soot. I’d like to see the literature and discovery of aircraft soot. As an engineer who has built aircraft, I find this fascinating. I would like to measure my amount of soot. How does one go about measuring how much soot I have? Obviously if my exhaust ports are black that’s bad but I’m genuinely curious about this as I’ve always assumed “b…

Fly less. Is waiting a week for a package really that big of a deal? Is traveling less really that much to ask?

It’s totally ok to be skeptical of the claims. I can’t make a judgement on them as I know even less than you might. But that’s not a reason to doubt that human’s environment impact matters and that maybe part of the solution is for those of us with access to 2day delivery for everything and cheap flights live a teeny bit more like those who don’t.

Re: Contrails Map

#23

It states that half of aircraft pollution is from contrails made of aircraft soot. I’d like to see the literature and discovery of aircraft soot. As an engineer who has built aircraft, I find this fascinating. I would like to measure my amount of soot. How does one go about measuring how much soot I have? Obviously if my exhaust ports are black that’s bad but I’m genuinely curious about this as I’ve always assumed “b…

but contrails are not made of soot, where I define soot as dark unburned carbon, contrails actual are made of water. There is also a highly likely chance I am being to literal and the word choice of soot was a bit of poetic license on the part of the author.

As a bonus consideration it might be better if they were made of soot, it would be ugly but water vapor is a tremendous greenhouse gas, several times as potent as CO2, soot blocking the sun might have more of a neutral effect, And related, we worked hard to get sulfur out of our fuels but sulfur dioxide turns out to be a negative greenhouse gas, it has a net cooling effect, I am not saying we should deliberately add sulfur back in, the downsides are too great, but it is an interesting bit of irony.

Re: Contrails Map

#24
post #2

Amazing visualisation, an excellent tool. 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.

[deleted]

Re: Contrails Map

#26

It states that half of aircraft pollution is from contrails made of aircraft soot. I’d like to see the literature and discovery of aircraft soot. As an engineer who has built aircraft, I find this fascinating. I would like to measure my amount of soot. How does one go about measuring how much soot I have? Obviously if my exhaust ports are black that’s bad but I’m genuinely curious about this as I’ve always assumed “b…

Fly less. Is waiting a week for a package really that big of a deal? Is traveling less really that much to ask? It’s totally ok to be skeptical of the claims. I can’t make a judgement on them as I know even less than you might. But that’s not a reason to doubt that human’s environment impact matters and that maybe part of the solution is for those of us with access to 2day delivery for everything and cheap flights li…

It is easy to suggest to fly less but it is going to be impossible to convince society where core values include agressive "extra" consumption, which in turn is the backbone of the world's current economy. Flying is one of top "extra" consumption types out there. I know many people are trying to convince people of that, but the society is moving in the opposite direction - bigger cars (both us and eu), more travel. Maybe arguments used currently are not convincing enough? I mean, sure, keep trying and you will obviously reach a certain 0.00x% of the population, but that's not really going to make any difference

Re: Contrails Map

#27

It states that half of aircraft pollution is from contrails made of aircraft soot. I’d like to see the literature and discovery of aircraft soot. As an engineer who has built aircraft, I find this fascinating. I would like to measure my amount of soot. How does one go about measuring how much soot I have? Obviously if my exhaust ports are black that’s bad but I’m genuinely curious about this as I’ve always assumed “b…

Fly less. Is waiting a week for a package really that big of a deal? Is traveling less really that much to ask? It’s totally ok to be skeptical of the claims. I can’t make a judgement on them as I know even less than you might. But that’s not a reason to doubt that human’s environment impact matters and that maybe part of the solution is for those of us with access to 2day delivery for everything and cheap flights li…

[dead]

Re: Contrails Map

#28
post #21

It states that half of aircraft pollution is from contrails made of aircraft soot. I’d like to see the literature and discovery of aircraft soot. As an engineer who has built aircraft, I find this fascinating. I would like to measure my amount of soot. How does one go about measuring how much soot I have? Obviously if my exhaust ports are black that’s bad but I’m genuinely curious about this as I’ve always assumed “b…

Night trains

What would make you say such a thing?

Re: Contrails Map

#29

It states that half of aircraft pollution is from contrails made of aircraft soot. I’d like to see the literature and discovery of aircraft soot. As an engineer who has built aircraft, I find this fascinating. I would like to measure my amount of soot. How does one go about measuring how much soot I have? Obviously if my exhaust ports are black that’s bad but I’m genuinely curious about this as I’ve always assumed “b…

It does not state that half of aircraft pollution is from contrails. It says half of the climate impact of aviation is from contrails. Soot can have other effects and cause pollution in other ways such as reducing air quality but I suspect that is very minimal compared to other industries.

The guide presented by the map gives a very good explanation on how contrail formation can be mitigating by altering the course of flights to reduce the formation in areas where it will have the most impact. This is based on a recent study that showed contrail avoidance could be one of the most cost-effective methods of reducing warming that we know of.

https://iopscience.iop.org/article/10.1088/2634-4505/ad310c

Simon Clark did a good video on this recently:

https://www.youtube.com/watch?v=QoOVqQ5sa08

Re: Contrails Map

#30
post #6

I'm not following the logic why contrails cause net warming. Why nuclear blasts - that also introduce lots of particles in atmosphere cause a cooling effect - "nuclear winter"?

I have no doubt that nuclear testing has affected the environment far more than is being let on. These experiments by their nature were classified. Who's to say they weren't a factor in helping create the ozone hole?
Post reply on HN