this post was submitted on 10 Nov 2023
80 points (100.0% liked)

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

5714 readers
537 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
 

Archived copy of the article

The problem is that deforestation needs to drop to zero (or maybe even be reversed) in order to halt the deforestation-induced-drought-and-further-deforestation cycle that's in progress.

top 6 comments
sorted by: hot top controversial new old
[–] ChemicalPilgrim 7 points 1 year ago (1 children)

This is why elections matter. Kick out Bolsonaro and suddenly things start improving.

[–] [email protected] 6 points 1 year ago

Worsening more slowly*

[–] [email protected] 5 points 1 year ago (1 children)

so we're still deforesting?

[–] [email protected] 6 points 1 year ago (1 children)
[–] [email protected] 1 points 1 year ago (1 children)

are they running out of easy terrain to deforest?

[–] [email protected] 2 points 1 year ago* (last edited 1 year ago)

No. There was a change of who held power in Brazil, and the new government started enforcing their laws.

The bigger issue is that just over 80% of the forest is still standing, and once you get below ~80%, the local water cycle will be so disrupted that it causes the whole forest to dry out, die, and be transformed into a different plant community.