this post was submitted on 22 Jan 2025
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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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[–] Shadow@lemmy.ca 51 points 1 day ago (13 children)

At the end of 2024, a Silicon Valley team that included researchers from Stripe, Anthropic, Tesla, and elsewhere produced a report showing that solar microgrids are by far the fastest way to build the power that data centers need. “Estimated time to operation for a large off-grid solar microgrid could be around 2 years (1-2 years for site acquisition and permitting plus 1-2 years for site buildout), though there’s no obvious reason why this couldn’t be done faster by very motivated and competent builders,” the report states. That’s because essentially all you have to do is put up a bunch of solar panels and some batteries and run a wire to your data center—not build a huge centralized power plant and connect it to the grid. The report continues, “Off-grid solar microgrids offer a fast path to power AI datacenters at enormous scale. The tech is mature, the suitable parcels of land in the US Southwest are known, and this solution is likely faster than most, if not all, alternatives.”

I like this.

[–] jagged_circle@feddit.nl 3 points 14 hours ago (9 children)

Why off-grid tho? We should build decentralized grid-tied solar. Every house covers their roofs with free panels

[–] seang96@spgrn.com 1 points 13 hours ago (8 children)

I want solar but I don't want it on my newish roof with a 50 year waranty. I get why roof installs are popular but why does it seem to be the only solution for consumers that is offered. They can look at my house from maps and see of got a sizable empty plot of land next to my house that could also be used.

[–] Captainautism@lemmy.dbzer0.com 2 points 11 hours ago

And not to mention how expensive it is to get a new roof installed with solar panels on it. They charge a lot of money to remove and put back the panels.

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