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Environment & Energy

NNadir

(35,460 posts)

4. No one now living will see 400 ppm again. Indeed, no one now living will ever see 420 ppm again.

Reply to xocetaceans (Reply #3)

Sun Mar 23, 2025, 04:30 PM

Mar 23

None of this reality has prevented antinuke Bill McKibben from disbanding 350.org however.

Like many of his ilk of wishful thinkers, he's rather clueless.

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New Weekly CO2 Concentration Record Set at the Mauna Loa Observatory, 428.38 ppm [View all] NNadir Mar 23 OP

Thank you for this info wendyb-NC Mar 23 #1

Thank you for your attention and kind words. n/t. NNadir Mar 23 #2

The 1990s-plausible goal of keeping the CO2 concentration under 400 ppm seems like it was just yesterday. n/t xocetaceans Mar 23 #3

No one now living will see 400 ppm again. Indeed, no one now living will ever see 420 ppm again. NNadir Mar 23 #4

Any ideas on how quickly 500 ppm can be "achieved"? What are the current long-term predictions for the curve's shape? xocetaceans Mar 24 #5

An estimate... NNadir Mar 24 #6

Thank you. xocetaceans Mar 24 #7

Correction: The predicted year using the quadratic for reaching 500 ppm.... NNadir Mar 25 #8

Did you happen to mean 2042 ? (I am supposing a transposition.) Thanks for checking out your spreadsheet. n/t xocetaceans Mar 25 #10

Late night typo. 2044. NNadir Mar 25 #11

Errata: Week 11 does not set the all time record for highest recording for CO2 concentration. Week 10... NNadir Mar 25 #9