this post was submitted on 06 Jan 2024
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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.

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Alaska's snow crab season canceled for second year in a row as population fails to rebound (www.cbsnews.com)
submitted 9 months ago by ZeroCool@slrpnk.net to c/climate@slrpnk.net
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[โ€“] FireTower@lemmy.world 14 points 9 months ago (1 children)

Now I don't know the exact Alaskan snow crab regulations off the top of my head but if they're anything like lobster regulations tend to be you've got it backwards. At least with lobsters they require the be at least a certain size. This ensures that they can reach a reproductive age.

Fish and Game agencies don't just recalibrate acceptable size limits to let people harvest more. The regulations have to be scientifically justifiable if they don't want to lose their federal PR act funds.

[โ€“] jadero@slrpnk.net 1 points 9 months ago

Correct me if I'm wrong, but isn't setting a minimum size exactly what leads to reduction in average size? I know that the angling regulations I'm familiar with put very strict limits on maximum size in order to keep the big ones breeding. Presumably, their size is a proxy for overall fitness.