Oops. Warmists wrong again! LA Times: Carbon dioxide in atmosphere did not break 400 ppm at Hawaii site
May 13, 2013, 9:40 a.m.
Carbon dioxide measurements in the Earth's atmosphere did not break the symbolic milestone of 400 parts per million at a Hawaiian observatory last week, according to a revised reading from the nation's climate observers.
The National Oceanic and Atmospheric Administration (NOAA) revised its May 9 reading at the Mauna Loa observatory in Hawaii, saying it remained fractions of a point below the level of 400 ppm, at 399.89.
Individual readings at any of NOAA's observation stations are subject to revision on a regular basis. Sometimes a data point is moved to another set when the sets are adjusted for the international date line.
*** The curve, pioneered in 1958 by scientist Charles D. Keeling, is the longest-running tally of carbon dioxide levels in the atmosphere and is maintained by the Scripps Institution of Oceanography in San Diego
