We should remember how good Wally Broecker was using just simple tools.
More than four decades ago, in 1982, Wally predicted that atmospheric COâ‚‚ in 2025 would be 419.5 ppm.
Measured global average atmospheric CO₂ was 419.3 ppm in 2023. 👀
He was quite insightful but also pragmatic. Wally once told me he calculated the area under the curve of a graph by cutting out the paper and weighing it relative to the uncut whole. 🧪
