this post was submitted on 09 Feb 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.

Recommended actions to cut greenhouse gas emissions in the near future:

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[–] Hazmatastic@lemm.ee 8 points 2 years ago (1 children)

So except in the 3 areas that matter most. Got it.

[–] silence7@slrpnk.net 6 points 2 years ago* (last edited 2 years ago) (1 children)

I wouldn't describe them as "3 areas that matter most" — shipping and aviation are only part of transport

Note that this chart only runs through 2020

[–] Hazmatastic@lemm.ee 2 points 2 years ago (1 children)

Nice insight, thank you. I wonder if the electricity industry uses is under the industry umbrella or the electricity and heating umbrella. Separate entities of course, but I'd be interested in seeing how electricity consumption compares from industry to consumer sectors.

[–] silence7@slrpnk.net 3 points 2 years ago

Not in this chart. I've seen national inventories which distribute electric sector emissions out to the consumers of it

[–] sinkingship@mander.xyz 5 points 2 years ago* (last edited 2 years ago) (1 children)

I like this graph from the article: Expected fossil fuel use

Wasn't it 2028 when the carbon budget for 1.5 °C runs out? And 2050 or so for 2 °C? Lol

[–] silence7@slrpnk.net 3 points 2 years ago (1 children)

The dates on which budgets run out depend on the rate at which we continue to extract and burn fossil fuels.

Future projections depend enormously on policy. Change policy, and those curves change.

[–] sinkingship@mander.xyz 2 points 2 years ago

You are correct with both points. I merely wanted to point out, how far we are from reaching the Paris Agreement.

1.5 may or not be a little later than 2028. The fossil consumption lines may or not be a little flatter.

[–] redtree3@beehaw.org 4 points 2 years ago (1 children)
[–] MrMakabar@slrpnk.net 3 points 2 years ago* (last edited 2 years ago)

According to the study the US military emitted 23million t of CO2e and the world 54.49 billion t of CO2e. That means it is 0.05% of global emissions. Per soldier it is something like 17t. There are a lot of small countries in the world, so it sounds worse then it really is.

To put it another way, they did not forget. The US military just does not matter enough in the grande scheme of things.

EDIT: Saudi Aramco release nearly three times of this in scope1 and 2 emissions alone.

[–] benjhm@sopuli.xyz 1 points 2 years ago

What a surprise! - decades ago it was obvious these are toughest nuts to crack, which is why I avoided taking planes since 1990. Led me to discover many interesting places on the way, although became isolated from a society which treats jetting about as standard.
By the way, article a bit simple, agricultural sector also has challenges to reduce emissions.

[–] MachineFab812@discuss.tchncs.de 1 points 2 years ago

... each of which is its own massive chunk of the pie.