this post was submitted on 03 Jun 2024
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Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

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Leaded fuel still used in small private planes in UK (2022) (www.bloomberg.com)
submitted 5 months ago by [email protected] to c/[email protected]
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Unpaywalled archive link: https://archive.ph/TDGsk Open Access link to the study mentioned: https://onlinelibrary.wiley.com/doi/full/10.1002/puh2.27

Posting because I saw another post on this community about Extinction Rebellion UK blocking a private jet airport today (June 2024) (https://extinctionrebellion.uk/2024/06/02/climate-activists-blockade-farnborough-private-jet-airports-three-main-gates/) and wondered how many people know that leaded fuel is still pretty common in planes, both in the UK and elsewhere; I was pretty shocked when I first learned this

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[–] [email protected] 22 points 5 months ago (1 children)

It's not even business - a lot of small planes are just hobbyists. So we're getting poisoned (to say nothing of the noise pollution) by people flying in circles for fun

[–] [email protected] 3 points 5 months ago* (last edited 5 months ago) (1 children)

finally someone who gets it.

I wonder if we'll ever come to a time when we can get the vroom vroom crowd to put down their poisoning toys, something tells me our species is fucked because they're never going to stop.

we have an air show here in Seattle every summer where the navy burns tens of thousands of gallons to VROOM f-18s around the lake.

I'm prior service, I'm not anti-military extremist, but do we really need to dump tens of thousands of gallons of gas into the summer (already shitty) air quality and the CO2 it becomes after combustion? for 'patriotism'?

Logically, no, but god forbid you take away the circuses from people, even if it's hurting their communities.

[–] [email protected] 3 points 5 months ago* (last edited 5 months ago)

Roughly a quarter of General Aviation traffic (which is primarily piston single-engine aircraft) is flight training, 30% is personal use, and the other 45% is commerce. I'm hoping we can increase adoption of unleaded alternatives since I don't see most of those flights going away.