this post was submitted on 27 Jul 2023
51 points (100.0% liked)

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

5237 readers
541 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
silence7@slrpnk.net
51
Meltwater from Antarctic Glaciers Is Slowing Deep-Ocean Currents - Eos (eos.org)
submitted 1 year ago by silence7@slrpnk.net to c/climate@slrpnk.net
9 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[–] UltraMagnus0001@lemmy.world 4 points 1 year ago* (last edited 1 year ago)

'Any signs of a slowing abyssal circulation could signal a fundamental shift in the equilibrium of the ocean and its role as a climate regulator, "

"Abyssal circulation ventilates deep basins with oxygen, and the weakening has already reduced the flow of oxygen and thinned well-ventilated deep layers. This change could affect marine life at depth as well as the capacity of the overturning circulation’s upper limb to return nutrients to the surface. “As the overturning slows down, the ocean will start to stagnate a bit,” Gunn explained."