this post was submitted on 10 Jul 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.

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[–] Steve@communick.news -3 points 1 month ago* (last edited 1 month ago) (19 children)

"The hottest year on record".
This is becoming a joke, right?
Practically every year is the hottest on record now. It's kind of lost significance, when it's generally a good bet next year will be hotter.

  • 2010
  • 2014
  • 2015 / 2022
  • 2016
  • 2017
  • 2018 / 2021
  • 2019
  • 2020
  • 2023
  • 2024 (so far)
  • 2025 (probably)

Edited for clarity.
Citation

[–] orca@orcas.enjoying.yachts 6 points 1 month ago (3 children)

Everything I come across says that 2023 was the hottest year on record so far, but I don’t know the source of this info and I’ve never seen the list you provided.

[–] Ranvier@sopuli.xyz 13 points 1 month ago

Yeah the person above you had a slightly old list. 2023 smashed all previous records and was number one. Well until 2024 it was number one I guess.

https://www.noaa.gov/news/2023-was-worlds-warmest-year-on-record-by-far

[–] Quill7513@slrpnk.net 8 points 1 month ago

At this point, if I understand the data correctly, the planet would need to get dangerously cold for the remainder of the year to not go down as the hottest year on record

[–] Steve@communick.news 0 points 1 month ago (2 children)

I edited the list trying to make it more clear.

The point is, most years since 2014 have been "The hottest year on record." It's kind of lost significance as as an outlier, when it's generally a good bet next year will be hotter.

[–] petrescatraian@mstdn.ro 7 points 1 month ago (1 children)

@Steve It does sound geeky, but yes, it is technically correct to say about a year that is the hottest year on record.

And the fact you pointed that every single year becomes the hottest year on record makes it even more dangerous and shows that we need to take proper measures.

[–] Steve@communick.news 1 points 1 month ago

Exactly. We're on the same page.

[–] orca@orcas.enjoying.yachts 2 points 1 month ago

Yeah, it would be good to word it more precisely. Hearing the same phrase every year doesn’t have the impact they think it does. I’m kinda curious as to what would sound better 🤔

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