You thought 417 was bad?

The mean carbon dioxide measured at Mauna Loa Observatory, Hawaii in June 2021 was 418.94ppm.

418.94ppm

If I am not mistaken, this is the highest concentration recorded since humans have been on earth?

At least it is comforting to know that such existential issues are front-of-mind for our political leaders. You know, “follow-the-science” and all that…

I thought 410 was bad in 2017?

Why, you ask?

I wrote in 2017 that,

• Records show that more than 10 generations of my family up to about 1900 would have only experienced a 10-15ppm rise in CO2 levels 
• My father, born in 1916 experienced approximately a 50-60ppm rise.
• In just my lifetime, global CO2 concentration has increased from 310 ppm to 410ppm 418.94ppm

Links

• 417, Yes. 417
• How has the climate changed since you were born?
• Carbon Brief.org
• 412.5
• Five from Five
• 1.5 – Probably Not…
• IPCC Global Warming of 1.5c
• 8th of October
• Oh, yeah, There’s this…
• Zero Carbon – The Future Called…
• The Fork in the Road
• Shutdown
• Carbon Conversations
• The Keeling Curve
• 410.05
• Mitigation, adaption… and suffering | Is there a choice?
• Water water everywhere and… nope.
• Yes, warmer still…
• 1.5 or 2 ? Take your pick!
• Consilience
• Elegy for the Arctic
• Cape Grim
• Flying Blind
• Hot, Hotter, Hottest… again
• Yes, the axis…
• What’s an Epoch? You’re standing in it!