Keeling 1700


My father would have been 102 years old on the 25th of April [Born 1916]

The Scripps CO2 measurements at Mauna Loa showed 410.05 parts per million on that same day.


Keeling 410.05
[ CO2 Concentrations 25th April 2017 : Source Scripps Institute]
This is a threshold last experienced on earth many, many millions of years ago.

  • 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


Keeling 1700One Lifetime


Keeling - Full Record
[Keeling Curve Full Record – Scripps Institute]



The Scripps CO2 measurements at Mauna Loa have been supported for many years by the U.S. Department of Energy (DOE), and have more recently been supplemented by Earth Networks, a technology company that is collaborating with Scripps to expand the global GHG monitoring network. Support for website development was provided in part by the National Science Foundation (NSF).

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