this post was submitted on 15 Nov 2023
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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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Denmark is proposing a ‘green tax’ on all flights | The effort is the latest by a European country to limit flying’s negative effects on the climate (wapo.st)
submitted 1 year ago by silence7 to c/climate
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[–] Claidheamh 3 points 1 year ago (1 children)

How does flying compare to driving in CO2e/passenger/km?

[–] silence7 5 points 1 year ago* (last edited 1 year ago) (1 children)

That varies a lot. People will often choose a train, or EV, or to not travel at all when they can't fly.

In general, the impact of discouraging air travel is to lower emissions.

[–] Claidheamh 5 points 1 year ago (2 children)

What I'm trying to say is we should apply the same discouragements to driving.

[–] MrMakabar 3 points 1 year ago

Denmark has among the highest car registration taxes in the world and is generally doing fairly well in that. We also have with EVs a very good replacment for combustion engine cars with much lower emissions, but no comparable commercially somewhat viable alternative for flying.

[–] silence7 2 points 1 year ago

Paris has done an amazing job of getting people out of cars recently, and deserves emulation on that score