Geoscience Reference
In-Depth Information
Roger Revelle with specimens on the deck of the Scripps Institution of Ocean-
ography research vessel
E. W. Scripps,
ca. 1936. Credit: Eugene Lafond Photo-
graphs, Scripps Institution of Oceanography Archives, UC San Diego Library.
Monthly mean atmospheric CO
2
at Mauna Loa Observatory, 2009-13. The
Keeling Curve is the widely oscillating dashed line, which plots the average
measured CO
2
at Mauna Loa each month, centered in the middle of the month.
The solid through line is the same monthly data, corrected to account for the
seasonal cycles that cause the oscillations. Source: Dr. Pieter Tans, NOAA/
ESRL (www.esrl.noaa.gov/gmd/ccgg/trends) and Dr. Ralph Keeling, Scripps
Institution of Oceanography (http://scrippsco2.ucsd.edu).
