this post was submitted on 09 Apr 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.

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

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The U.S. Urgently Needs a Bigger Grid. Here’s a Fast Solution. A rarely used technique to upgrade old power lines could play a big role in fixing one of the largest obstacles facing clean energy (www.nytimes.com)
submitted 7 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] slazer2au@lemmy.world 29 points 7 months ago (4 children)

Replacing existing power lines with cables made from state-of-the-art materials could roughly double the capacity of the electric grid in many parts of the country,

Ah but that costs money and eats into profits.

[–] perestroika@slrpnk.net 9 points 7 months ago* (last edited 7 months ago)

Coincidentally, there's a cheaper way too. :)

The ratings of existing power lines can be recalculated on an hourly basis according to outdoor temperature and wind.

That however, requires software and agility, which big companies seldom have... and it doesn't help during a heat wave with no wind, of course.

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