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] 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.