this post was submitted on 19 Mar 2025
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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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World Meteorological Organization (WMO) Report Documents Spiralling Weather and Climate Impacts: Carbon Dioxide Levels Highest in 800,000 Years. (wmo.int)
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  • Atmospheric concentration of carbon dioxide are at the highest levels in the last 800,000 years.
  • Globally each of the past ten years were individually the ten warmest years on record.
  • Each of the past eight years has set a new record for ocean heat content.
  • The 18 lowest Arctic sea-ice extents on record were all in the past 18 years.
  • The three lowest Antarctic ice extents were in the past three years.
  • The largest three-year loss of glacier mass on record occurred in the past three years.
  • The rate of sea level rise has doubled since satellite measurements began.
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