this post was submitted on 20 Oct 2023
131 points (97.8% liked)

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

7365 readers
245 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
silence7@slrpnk.net
131
Billions of snow crabs have disappeared from the ocean around Alaska in recent years, and scientists now say they know why: Warmer ocean temperatures likely caused them to starve to death. (www.cnn.com)
submitted 2 years ago by silence7@slrpnk.net to c/climate@slrpnk.net
9 comments fedilink hide all child comments
 

The paper is here

you are viewing a single comment's thread
view the rest of the comments
[–] TWeaK@lemm.ee 18 points 2 years ago* (last edited 2 years ago) (2 children)

I think it's more impactful if you write the numbers out fully, 6,000,000,000 down to 200,000. That's 0.00003% of the population remaining

Edit: Statistically, you could say something is 100% certain if there are 6 standard deviations, or 99.9999998%. This is more than 5 standard deviations; more than 99.99994% of the population has been eradicated. I think it's all but certain that snow crabs will end up on the endangered species list.

[–] lolrightythen@lemmy.world 7 points 2 years ago* (last edited 2 years ago) (1 children)

Kudos for the mathematical perspective. It seems wild to me that these crabs aren't instantly considered critically endangered. Perhaps more evidence is required to confirm the data.

Of course I didn't read the article, but harvesting doesn't help. I live about as far inland as you can get (not Russia, tho) and there are always "fresh" snow crab legs at the local grocery store.

[–] TWeaK@lemm.ee 3 points 2 years ago (1 children)

Kudos for the mathematical perspective.

You should probably take it with a pinch of salt, it's been forever since I've actually done statistics :o) I just remember the 6 sigma certainty thing when I used to study Biochemistry, I may well have applied it wrong here hah.

Harvesting won't help from now on, with such a small population, but it likely wasn't a factor in reducing the population from 6 billion.

[–] lolrightythen@lemmy.world 2 points 2 years ago

Good enough for me. Objective analysis in a comment section is rare and refreshing. Cheers!

[–] Nudding@lemmy.world 3 points 2 years ago (1 children)

Seems like a pretty large domino, or am I wrong? Like how much biomass is that taken out of the food chain?

[–] TWeaK@lemm.ee 4 points 2 years ago

One type of snow crab has adults reaching 1-4 lbs, or 0.45 to 1.81 kg, so the round numbers would perhaps be either 2 lbs or 1 kg. Sticking with metric for laziness that's 5,999,800 tonnes of crab. It's roughly about the same for imperial tons also.