this post was submitted on 16 Oct 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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[–] Pyr_Pressure@lemmy.ca 46 points 1 year ago (1 children)

Probably the same chance for 2024 with el nino

[–] teft@startrek.website 28 points 1 year ago (1 children)

2025 isn't looking that great either.

[–] silence7@slrpnk.net 14 points 1 year ago (2 children)

The history of temperature rise has not been monotonic. So I'd expect a period of a few years where we don't set a new record.

[–] TWeaK@lemm.ee 14 points 1 year ago (1 children)

Yes but that doesn't mean we've reached the current peak yet.

[–] thepianistfroggollum@lemmynsfw.com -4 points 1 year ago (1 children)

Exactly, don't forget that climate change goes extreme in both directions, so we may very well face the coldest year on record too.

[–] silence7@slrpnk.net 14 points 1 year ago* (last edited 1 year ago) (1 children)

Basically no chance of that happening. Temperatures are rising, just with a bit of noise:

Monotonic would mean that each year is strictly warmer than the last one, but the noise is big enough that we sometimes get a few slightly less warm years before the next record.

The bigger picture looks like this:

[–] KISSmyOS@lemmy.world 10 points 1 year ago* (last edited 1 year ago)

The scary thing about your first graph is that it is missing the current year, where the line will precisely hit the top right corner.
I feel like not enough people realize how unprecedented this year was. It took 40 years of global warming to get from +0.3 to +0.9 and now we're making an equally big jump in 1 year.