this post was submitted on 19 Apr 2024
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Climate - truthful information about climate, related activism and politics.

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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.

Recommended actions to cut greenhouse gas emissions in the near future:

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'No place in our homes' | Hydrogen blends leak twice as much in household cookers compared to gas: report | leakage rate is likely to wipe out any climate benefits of using H2 in the first place (www.hydrogeninsight.com)
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[–] grue 2 points 7 months ago* (last edited 7 months ago)

In terms of chemically bonding hydrogen to something else for easier storage and transport, I think the best plan is to add carbon so it becomes convenient synthetic methane or gasoline that we can use in our existing distribution infrastructure and machinery.

...of course, that just goes to show how absurd the entire concept of hydrogen is, considering that it's almost exclusively made from those things in the first place!

If we really want a sustainable portable energy storage medium that isn't electricity, my vote would be for cracking water into hydrogen with electrolysis and then immediately (in the same facility) converting that + CO2 to synthetic hydrocarbon fuel using the Fischer-Tropsch process.