this post was submitted on 24 Apr 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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131 million in U.S. live in areas with unhealthy pollution levels, lung association finds (ground.news)
submitted 6 months ago by disguy_ovahea@lemmy.world to c/climate@slrpnk.net
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[–] Crikeste@lemm.ee 5 points 6 months ago (6 children)

More than 1/3rd? That’s wild. But I guess that’s also big cities.

[–] huginn@feddit.it 6 points 6 months ago

It's not big cities: it's primarily 3 things

  1. Wildfires (see also: climate change)
  2. Energy generation and heavy industry (generally done rurally)
  3. Cars

Something as simple as living near an interstate can result in significant lung and heart damage over time. Brake dust is carcinogenic and the partial combustion products, particularly from diesel, are extremely toxic.

Usually if a city has particularly bad air quality it is because it is placed near a land formation that collects or traps bad air from another location. That's what's particularly foul about Salt Lake City or Bakersfield, for example.

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