Leader of Keeling Curve measurement says temporary bump from El Niño could push atmospheric CO2 levels above symbolic threshold for good Continue reading Is This the Last Year Below 400?
Repost of April 2013 entry
The Mauna Loa carbon dioxide (CO2) record, also known as the “Keeling Curve,” is the world’s longest unbroken record of atmospheric carbon dioxide concentrations.
Continue reading What Does This Number Mean?
The rate of growth in carbon dioxide concentrations in the atmosphere has accelerated since the beginnings of the Keeling Curve. Continue reading Is the Rate of CO2 Growth Slowing or Speeding Up?
Scientists make CO2 measurements in remote locations to obtain air that is representative of a large volume of Earth’s atmosphere and relatively free from local influences that could skew readings. Continue reading How are CO2 Data Processed?
Could hit 400 parts per million in January Continue reading The Annual Rise in CO2 Levels Has Begun
Scripps Institution of Oceanography, UC San Diego, Geochemist Ralph Keeling is interviewed for the video series “Climate Changers: Hot Lessons and Cool Solutions.” Continue reading Ralph Keeling on Crossing 400 in new State of California Video Interview
So we’ve reached 400 ppm.… Now what happens? Continue reading Now What?
Some aspects of CO2 analysis require old-school methods Continue reading Why Scientists Still Collect CO2 in Flasks
The farther north a CO2 reading is made, the wider it swings with the seasons Continue reading Why are Seasonal CO2 Fluctuations Strongest at Northern Latitudes?
This 2008 film made for the 50th anniversary of the Keeling Curve features interview footage with the measurement’s creator Charles David Keeling originally filmed for the 2004 Finnish documentary “The Venus Theory.”