Weatherdem's Weblog

Bridging climate science, citizens, and policy

February 2011 CO2 Concentration: 391.76ppm


February 2011′s CO2 concentration measured at Mauna Loa, Hawai’i was 391.76ppm.

That value is 1.92ppm higher than February 2010.  It is 0.57ppm higher than January 2011.

A rough extrapolation of February CO2 concentration values to May values, when the yearly maximum occurs, projects to ~395ppm.

Remember, we should be targeting 350ppm to keep global temperatures from rising beyond 2C above pre-industrial values.


2 thoughts on “February 2011 CO2 Concentration: 391.76ppm

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