this post was submitted on 10 Jul 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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The media covers only a narrow slice of climate research—one that inspires fear over action (www.anthropocenemagazine.org)
submitted 1 year ago by [email protected] to c/[email protected]
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[–] [email protected] 2 points 1 year ago

Just to give you an idea, how good some studies are. This is the quality of the World Energy Outlook report from the IEA:

  • The WEO 2010 projections for solar PV capacity for the year 2024 (180 GW) have been achieved in January 2015 and exceeded threefold the WEO projections for 2015.
  • Real wind capacity in 2010 exceeded 260% and 104% the WEO 2002 and 2004 projections respectively for this year. WEO projections for wind energy from 2002 for 2030 had been achieved 20 years earlier, in 2010.
  • Independent analysts have been more correct in their projections of the successful expansion of renewable energy than the WEO. Only forecasts of the conventional energy industry, including BP, Shell and Exxon Mobil, were similarly low as IEA projections.
  • WEO projections overestimate the potential of coal industry in the last years and do not reflect the latest trend of divestment of finance from the coal industry in the last years as well as China’s starting coal exit and increasing investment in renewables.
  • WEO from 2000 to 2006 highly overestimated oil-based electricity. Despite a decline of nuclear energy in the last 10 years, WEO still projects an annual expansion of about 10 GW nuclear in the next decade. Given a few commissioned and financed nuclear projects and the 100-200% overruns over the planning costs in Europe and delays, WEO projections appear highly overestimated.