this post was submitted on 31 May 2024
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Climate - truthful information about climate, related activism and politics.

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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.

Recommended actions to cut greenhouse gas emissions in the near future:

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[–] Forester@yiffit.net -4 points 5 months ago* (last edited 5 months ago) (3 children)

The US Navy has had functional Small modular reactor designs mostly PWR designs since the 1960s in the 5mw to 500mw range with no major failures yet.

[–] JGcEowt4YXuUtkBUGHoN@slrpnk.net 17 points 5 months ago (1 children)

The problem is that none of these designs have ever been used to power the grid. Every nuclear project in the recent past has blown by cost and time estimates. Wind and solar are not only cheaper than nukes, they can also be installed much quicker and predictably. Nukes have a place, but we need clean energy now.

[–] halcyoncmdr@lemmy.world -3 points 5 months ago (1 children)

Wind and solar are great, but they cannot provide consistent 24 hours base load production. Even with massive battery farms, they cannot replace bas load consistently.

That's where nuclear needs to be, replacing the base load production currently being handled via coal and natural gas.

[–] JGcEowt4YXuUtkBUGHoN@slrpnk.net 3 points 5 months ago* (last edited 5 months ago) (1 children)

The US at least already has enough nuclear to handle base loads when solar and wind are unavailable. Nukes in some contexts are needed, but I believe we have 30% or so nukes in the US. Diverting resources to new nukes is a waste when we could be making carbon fuels unprofitable soon by investing in solar and wind.

[–] HelixDab2@lemm.ee 1 points 5 months ago

But are they in the right places? There's always loss in power transmission, so you can't use reactors that are in, say, Illinois, to make up for grid deficits in Alabama (or, not directly). And Texas, being a special snowflake, isn't tied into the national grid, so they always need their own systems.

[–] silence7@slrpnk.net 7 points 5 months ago (1 children)

Yes. Operated on a military budget. There's a reason they're not used for civilian use.

[–] kalkulat@lemmy.world 5 points 5 months ago (1 children)

That's thanks to the training (started with Rickover) and discipline and no shareholders. Commercial nukes don't measure up, e.g. when it comes to leakages and knowing what to do in case.

[–] Forester@yiffit.net -3 points 5 months ago (3 children)

Now you're just being disingenuous. I am certain that qualified individuals from the private sector and qualified individuals from the military both receive adequate training to operate their facilities

[–] NaibofTabr@infosec.pub 3 points 5 months ago

What's funny about this is that most of the qualified private sector individuals are former Navy personnel. The civilian nuclear industry loves to hire people with nuclear training from the Navy because they're already trained and experienced.

The Navy does operate a lot of nuclear reactors, and quite safely overall, but they also spend DoD money on building and maintaining them and training personnel for them.

[–] kalkulat@lemmy.world 2 points 5 months ago (1 children)

Way to start out with an ad hominem. Cheap too. Since you're 'certain' (and I know very well that's hard to come by for this sacred cow), your #1 reference?

[–] Forester@yiffit.net -3 points 5 months ago (1 children)

If I called you stupid that would have been an ad hominem attack, I'm saying you're misrepresenting facts which would require intelligence. Therefore, disingenuous.

[–] kalkulat@lemmy.world 0 points 5 months ago

Poor governor of Georgia, one more in a long, long line.

I learned much of what I know about how facts are misrepresented by reading advertisements by the industry. Like the full-page regional newspaper ad along the lines of "One myth about nuclear power is ... instead the fact is this ... " back in the 1970s. Or my all-time favorite fact, one of the earliest: Safe, clean, 'too cheap to meter', said AEC chairman Lewis Strauss, in 1954.

Maybe it was catching? But the facts, like those countless millions of escaped curies, were invisible. Convenient.

This 14-year-old Fermi story might help: https://www.latimes.com/business/hiltzik/la-fi-hiltzik-detroit-nuclear-20161003-snap-story.html

[–] kalkulat@lemmy.world 0 points 5 months ago* (last edited 5 months ago)

Way to start out with an ad hominem. Cheap too. Since you're 'certain' (and I know that's hard to come by for this sacred cow), your #1 reference?