this post was submitted on 04 Sep 2023
22 points (95.8% liked)

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

5054 readers
480 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
 

My takeaways are that more news exposure is good (see the availability heuristic and mere-exposure effect) for putting climate change concern on the agenda, while information campaigns aren't very useful unless they're paired with avenues for action. Policy changes (incentives and disincentives, regulations, price changes, social norms) can help with action.

top 8 comments
sorted by: hot top controversial new old
[–] [email protected] 6 points 1 year ago* (last edited 1 year ago) (1 children)

Scientists are on it. Everybody have HOPE! We can fix it! Carry on eating meat, recycling and having children, and just remember- DON'T LOOK UP! (And pay no attention to the rest of this comment.)

A huge amount of polar ice has melted this year and a massive amount of carbon has been released into the atmosphere from the wildfires , on top of the huge amounts from industrial pollution.

More carbon in the atmosphere means more heat in the next few years.

5 more years as hot as 2023, and we'll have less than 100,000 sq km of polar ice left, the oceans will be absorbing the massive amounts of solar radiation that the ice had previously reflected, and will start releasing massive amounts of methane clathrate from the sea floor. This is called the Blue Ocean Event. And is also known as the Clathrate Gun Hypothesis.

To add to all this terribly offensive fearmongering: There are over 8 billion people on earth and global fresh water reserves will be 40% over capacity by 2030, and 90% of global top soil and arable land is 'at risk' of depletion by 2050. ('At risk' is in quotes to highlight it's a conservative estimate from the UN.)

.

If anyone does actually have proper scientific evidence that there is reasonable cause for hope in our ability to 'fix' climate change, I'm all ears and would very much appreciate it, because from where I'm sitting it just looks like if magically the blue ocean event and clathrate gun don't go off and end us first, the drought and famine will shortly after.

[–] [email protected] 0 points 1 year ago (1 children)

On the BOE blog, they also mention a temp rising of 18° by 2026, that's surprising....

[–] [email protected] 4 points 1 year ago* (last edited 1 year ago) (1 children)

Which bit? I found nothing saying 18c by 2026 on the boe page. 1.6c by 2026 is there. And so is a sentence saying that altogether after the boe there could be as much as 18c rise in temp.

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

At the end of the article, above the conclusion. Search 18. And there's a link to another page.

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

I think I'm going to need to find another resource to link as an explanation for the BOE, the rest of that site is giving misinformation vibes and fact checking that will take longer than I care to spend. Thanks for pointing this out.

[–] [email protected] 0 points 1 year ago (1 children)

and thank you for being reasonable. BOE could happen, Al Gore mentioned it in his first movie, but it's unlikely to happen in this century. Sadly it will happen because we aren't slowing down enough...

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

Eh I'm still on team BOE is going to be soon. You do you though.

I only linked that page as it was a good explanation of the BOE, before today I hadn't looked at the rest of the blog.

And tbh, panicking about climate collapse, collecting and organising huge amounts of data on it, and then getting blasè about the upcoming genocide, is a very justifiable reaction. So while I'm no longer going to be linking that page on the BOE (as I haven't got the mental engery to fact check the rest of the blog), I'm not holding it against the author (provided they're not shilling disinformation propaganda that is).

[–] [email protected] 2 points 1 year ago

an interesting comment on reddit, BOE before the end of the century, maybe sooner. CarbonBrief seems to indicate as soon as 2032... well... :)