Annals of global warming: Keeling Curve gone vertical

June 22, 2013

What is the Keeling Curve?

What does it look like now?  See this graphic from the New York Times:

Keeling Curve graph and grahic, New York Times, May 11, 2013

New York Times, May 11, 2013

See the daily update of the Keeling Curve at the Scripps Institute site, University of California at San Diego.



Annals of global warming: Records from Mauna Loa show continuing rise in atmospheric CO2

March 26, 2011

NOAA's Mauna Loa Observatory, NOAA photo, 1982, Cmdr. John Bortniak

NOAA's Mauna Loa Observatory, from NOAA At the Ends of the Earth Collection, 1982 NOAA photo by Commander John Bortniak

John Adams observed, and Ronald Reagan was fond of quoting, “Facts are stubborn things . . .”

Here are the facts on atmospheric carbon dioxide (CO2):


Monthly CO2 levels since 1960, Mauna Loa Observatory (Scripps Inst of Oceanography)

Mauna Loa Observatory, Scripps Institution of Oceanography, UCSD (University of Calfornia-San Diego); CO2 concentrations in parts per million (ppm)

As described at the Scripps Institution of Oceanography site:

Monthly average atmospheric carbon dioxide concentration versus time at Mauna Loa Observatory, Hawaii (20°N, 156°W) where CO2 concentration is in parts per million in the mole fraction (p.p.m.). The curve is a fit to the data based on a stiff spline plus a 4 harmonic fit to the seasonal cycle with a linear gain factor.

Data from Scripps CO2 Program.

For perspective, here’s a chart from Scripps that shows why there is concern over current levels of CO2:

CO2 over the past 420,000 years - Scripps Institution of Oceanography

CO2 over the past 420,000 years - Scripps Institution of Oceanography

Resources, More:

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