this post was submitted on 29 Dec 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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[–] eleitl@lemm.ee 9 points 1 week ago

No, we had precisely zero measurable impact on the Keeling curve.

[–] fuck_u_spez_in_particular@lemmy.world 8 points 1 week ago (1 children)

Only positive thing I can see there is, that the last few years seem to be linear growth instead of the exponential before...

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[–] technocrit@lemmy.dbzer0.com 7 points 1 week ago

Our masters prefer profit much much much more than planetary survival.

[–] WeUnite@lemm.ee 5 points 1 week ago (8 children)

I got one word for you: Vote.

Corporations like BP push individual responsibility and personal carbon footprint[1] to try to neutralize you from achieving real policy gains which would have a much greater impact than your individual action. Time spent trying to convince people to vote for politicians who take climate change seriously is far more productive than time spent trying to educate people about their so-called carbon footprint. Of course we all play a part but seeing this chart it's clear we need more action and that's why I'm saying this.

[1] https://www.nprillinois.org/2023-12-18/how-big-oil-helped-push-the-idea-of-a-carbon-footprint

[–] technocrit@lemmy.dbzer0.com 8 points 1 week ago

politicians who take climate change seriously

lol

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[–] tenacious_mucus@sh.itjust.works 5 points 1 week ago (6 children)

So how do we have readings going so far back, like even in the late 1800s? Is this just an assumed average for back then?

[–] Rhaedas@fedia.io 8 points 1 week ago

Lots of different independent methods and sources that correlate, along with some approximations. Actual measured readings aren't as accurate or match up in the early periods, which is why the IPCC decided to use 1980 as a baseline to start from for consistent and abundant data to compare with. This continues to be a side argument about if we're really past 1.5C or not, since the graphs start differently. The "good" news is that as time goes on, that argument becomes less relevant because the differences shrink and catastrophic converges.

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[–] sirico@feddit.uk 3 points 1 week ago

Incapable until directly affected

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