this post was submitted on 13 May 2025
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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.

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Swamp Coolers’ Ability to Beat the Heat is Evaporating in Record Southwestern [US] Temperatures (insideclimatenews.org)
submitted 3 weeks ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] markovs_gun@lemmy.world 37 points 3 weeks ago (2 children)

Idk why this is a news article. Everyone knows anything about this knows that evaporative coolers have a hard cooling limit at the wet bulb temperature and will perform poorly in high relative humidity environments and hot outside temps. They're not magic. We've known this limitation for hundreds of years at this point.

[–] thejevans@lemmy.ml 4 points 3 weeks ago

yeah, this is just physics. To overly simplify, swamp coolers alone cannot move the indoor climate to a comfortable state if the baseline temperature is above 40 deg C, even if there is 0 water in the air to start with. They can still help in certain climates, but require air conditioning or significant air movement to compensate.

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