this post was submitted on 27 Nov 2023
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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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Now for Some Good News About Climate | Costs for renewables have plummeted and growth is exceeding expectations (www.wsj.com)
submitted 11 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] badmemes@feddit.de 7 points 11 months ago (1 children)

According to the experts in this video it currently takes half a year to offset the emissions related to the production and installation of wind and solar. After that its completely green energy. And solar cells last for at least 20 years.

So by purchasing from other countries you might outsource a little bit of emissions but save loads compared to running carbon-based plants.

[–] iraq_lobster@slrpnk.net 1 points 11 months ago* (last edited 11 months ago)

this dude (french physicist presumably, and big promoter of nuclear) thinks otherwise:

https://jancovici.com/en/energy-transition/renewables/what-potential-for-solar-energy-and-biomass-energy/

As a panel has a 25 year life usage, we see that about half the gross production of the whole device goes to the initial energy debt linked to the production of the device. In other terms, if we want to take into account the energy spending required to manufacture the device, it’s rather 5% of France that we should cover with panels.

because i once took ur position and was confronted with this argument, and now i am confronting this arguemnt against u: nothing personal but just to get hold of facts. also was busy so i couldnt respond same-day, but i kept ur reply in mind.Lemmy is really engaging but can't let that seep into the rest of my daily-life