this post was submitted on 03 Aug 2025
37 points (100.0% liked)

Climate - truthful information about climate, related activism and politics.

7057 readers
421 users here now

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:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.

founded 2 years ago
MODERATORS
top 1 comments
sorted by: hot top controversial new old
[–] grue@lemmy.world 4 points 14 hours ago* (last edited 14 hours ago)

To use current policy scenarios in order to justify the repeal of current policies (as the EPA is attempting to do) rests on a fundamentally flawed premise. If the world actively repeals climate policies – which the US proposes doing – it would potentially push us to a higher emissions scenario. Indeed, the high end uncertainty of a SSP4-6.0 scenario – which still involves large CO2 emissions reductions by 2100 – would be quite close to the upper end of the EPA’s 2009 range.

Similarly, the fact that the world has made some progress in bending down the curve of future emissions should not be used as a justification that climate change is not a problem.