this post was submitted on 18 Jun 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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Please Do Not Let Elon Musk Destroy the Ozone Layer (www.splinter.com)
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[–] Kalcifer@sh.itjust.works 3 points 4 months ago (1 children)

Natural Gas rockets? What a small step for man, massive step back for mankind.

Why do you dislike methane as a fuel? Also, in case you were unaware, as a side note, SpaceX's newest rocket, which is currently under active development, Starship and Super Heavy, uses methane as a fuel.

[–] FiniteBanjo@lemmy.today -1 points 4 months ago (1 children)

SpaceX’s newest rocket, which is currently under active development, Starship and Super Heavy, uses methane as a fuel.

Okay thanks, I like it EVEN LESS NOW. We have better rocket fuels which degrade into water vapors. Using Natural Gas rockets is the environmentally unfriendly option that make corporations more money.

[–] Kalcifer@sh.itjust.works 3 points 4 months ago* (last edited 4 months ago) (1 children)

We have better rocket fuels which degrade into water vapors.

Which fuels are those? Also why would one want their rocket fuel to degrade? I can see fuel storage issues with that. Furthermore, keep in mind that the reaction of CH4 and O2 (combustion) creates H2O (water) and CO2. The only fuel that I'm aware of that creates only water when it's combusted in O2 is H2 (hydrogen). ~~An issue with hydrogen as a fuel, when compared with methane, is its mass ­— lower exhaust mass lowers the specific impulse.~~

[–] FiniteBanjo@lemmy.today -2 points 4 months ago (1 children)

Cool, glad you could see the light.

[–] Kalcifer@sh.itjust.works 2 points 4 months ago (1 children)

What? You didn't answer any of my questions, nor did you comment on any of my side notes.

[–] FiniteBanjo@lemmy.today -3 points 4 months ago (1 children)

Your questions were shit, mate. The important part is that natural gas rockets are a cost cutting measure that is harmful to us all.

[–] Kalcifer@sh.itjust.works 2 points 4 months ago* (last edited 4 months ago) (1 children)

Your questions were shit

Would you mind elaborating?

natural gas rockets are [...] harmful to us all.

Why? Do you have a source for that? Why would natural gas be particularly worse than any other fuel?

[–] FiniteBanjo@lemmy.today -4 points 4 months ago

Yeah I do mind.