this post was submitted on 08 Jan 2024
73 points (98.7% liked)

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

5229 readers
580 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 1 year ago
MODERATORS
 

In the U.S., gas-powered cars have stopped making big efficiency gains. Some automakers’ offerings have gotten less efficient as they swap out sedans for SUVs.

all 6 comments
sorted by: hot top controversial new old
[–] gravitas_deficiency@sh.itjust.works 21 points 10 months ago

I absolutely detest SUVs (I hate how they drive, and the sheer size, as well as the efficiency issues mentioned here), and will do my damndest to avoid ever buying one, but it’s starting to feel like I’m simply being relegated to buying a used car.

The average American consumer is frustratingly dumb :(

[–] MataVatnik@lemmy.world 15 points 10 months ago (1 children)

Efficiency goes down as car manufacturing begins offering main battle tanks for the suburban mom that does it all

[–] lurker8008@lemmy.world 8 points 10 months ago

Blame the CAFE regulation's formula for minimum required mpg favoring bigger vehicles

[–] lntl@lemmy.ml 4 points 10 months ago

while gains in efficiency have slowed, profits have made steady gains

looking at things strictly from an environmental perspective misses an important part of the story