this post was submitted on 17 Nov 2023
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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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US, UK to Push Pledge to Triple Nuclear Power by 2050 at COP28 | Countries to support new tech, like small modular reactors (www.bloomberg.com)
submitted 2 years ago by silence7@slrpnk.net to c/climate@slrpnk.net
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For this to actually happen, it's going to require a major drop in the cost of nuclear power. To some extent, pushing nothing-but-nuclear has been a fossil fuel industry strategy because those high costs and long lead times mean that it's not actually getting built.

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[–] MrMakabar@slrpnk.net 2 points 2 years ago

The point was more that days with half as much wind and solar as the average are extremely rarer. It is a bad day when it is at 60% of the average. So you really need something like 50% overproduction and maybe a days worth of storage with such a grid. There are also other forms of electricity production like hydro, biomass, waste burning and geothermal, which are either baseload or dispatchable by nature. Also losses for high voltage power lines are something like 6.7%/1000km for AC lines. That is not that horrible either.