Another record broken for January CO2

Atmospheric CO2 was 388.63 parts per million (ppm) in the first month of 2010, according to scientific data released February 10, 2010, by the National Oceanic and Atmospheric Administration (NOAA) in the United States. Atmospheric CO2 was 386.92 ppm one year earlier in January 2009.

As noted in Atmosphere Monthly in January 2010, the 2009 annual mean concentration of CO2 in the atmosphere was 387.35 ppm, up from 385.57 ppm in 2008.

These rising levels are significantly higher than the natural range (~180 ppm to 300 ppm) that existed for at least 2.1 million years until the start of the industrial revolution.

Mauna Loa Observatory, Hawaii (USA)