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

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

7365 readers
246 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
[–] HuddaBudda@kbin.social 29 points 2 years ago (8 children)

6 billion down to 200,000 in 3 years. Give or take a few thousands

We might end up putting these guys on the endangered species list to protect them. If it continues at this rate it may not even matter.

They found that the temperature of the water was not above the species’ thermal limits, but it did increase their caloric needs considerably (see the Perspective by Kruse). This increase, in conjunction with a restriction in range, led to an unexpected mass starvation event.

So crabs eat more in warmer seasons, and they didn't have enough food. Good news is they will survive if the temperature doesn't increase another 1-2 degrees. Bad news is, we are still on track for that.

So it looks like a lot of us are going to have to get used to synthetic crab for a bit.

[–] TWeaK@lemm.ee 18 points 2 years ago* (last edited 2 years ago) (5 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.

[–] 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.

load more comments (3 replies)
load more comments (5 replies)