On atmospheric carbon removal: Express it in time
1️⃣ It's hard for people to visualize removing tons or billions of tons of CO₂. What if we talked about CO₂ removal (CDR) like a time machine (e.g., this machine will take us back 5 minutes*)?
— David Ho (@_david_ho_) February 3, 2022
*ignoring the hysteresis in the relationship between CO₂ and climate change impacts. pic.twitter.com/LgDlVNxziQ
2️⃣ So if global CO₂ emissions is 38.9 GtCO₂/yr, and the Climeworks Orca plant removes 4000 tCO₂/yr, it's a time machine that takes us back 3 seconds every year. pic.twitter.com/qKqlIMGMue
— David Ho (@_david_ho_) February 3, 2022
3️⃣ This idea came to mind when I saw a talk by @mathieu_mongin where he spoke about adding alkalinity to decrease ocean acidification on the Great Barrier Reef to take it back to conditions of the past.
— David Ho (@_david_ho_) February 3, 2022
4️⃣ When we look at things this way, once again, it's hard to see how stopping CO₂ emissions isn't easier.https://t.co/joIlpM8LQU
— David Ho (@_david_ho_) February 3, 2022
Permanent sequestration of 100,000 tonnes of CO₂ from the atmosphere each year for four years is impressive, but when you see that it’s a time machine that takes us back 1 minute and 21 seconds each year, it’s really not enough. https://t.co/q9pnasnFbO
— David Ho (@_david_ho_) March 17, 2022
Great minds. Large numbers are hard to relate to, whereas everyone experiences time so it makes sense to contextualize large numbers that way.
— David Ho (@_david_ho_) April 12, 2023
Study shows support for carbon removal but great concern over solar manipulation by Ulrich von Lampe, Mercator Research Institute on Global Commons and Climate Change (MCC) gGmbH, Phys.org, October 30, 2023
As of 2024, Germany isn't hitting its emissions targets, but is proposing to be a leader in carbon removal.
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