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This will change our planet forever. On this Earth Day, look at how humanity has increased global greenhouse gas concentrations (here in CO₂-equivalents), compared to the natural changes over the preceding 130,000 years:

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Maybe no one makes decisions 100,000 years from now... BUT we ALL face the consequences of decisions made 100,000 years ago. So your ancestors would have been better off staying in the trees.

They explain it themselves: "not included are the radiative forcings arising from spatially heterogeneous, short-lived, climate forcing agents, such as aerosols, clouds and tropospheric ozone, because theay are highly variable and have uncertain global magnitudes and also are not included here."

This graph uses the same data but uses the unit W/m² for the total greenhouse gas forcings relative to 1750. It looks somewhat less extreme than the CO₂-equivalent graph, because the forcing of CO₂ increase non-linearly with concentration increase.

Tropospheric Water Vapor increases because of warming and is therefore a possitive FEEDBACK, amplifying warming from forcings. Stratospheric Water Vapor and tropospheric ozone are FORCINGS, because they form (mainly) because of methane emissions. Crucial IPCC graphs:

Thanks to @weatherprof.bsky.social for often asking the important questions that help me explain this all better. Jeff understands that these are the crucial parameters that determine how fast our climate changes. And knows how to clearly communicate it to a broad audience.

Oh, this is bad, bad, and bad again. The 2XCO2 scenario (from 280 ppm CO2 to 560, now > half-way there) is predicted to end technological civilization, possibly end _Homo sapiens._ Have we actually entered that scenario, considering all greenhouse gases, expressed as CO2 equivalents? 🤦