CO2 Now | CO2 Home
The 2013 average annual concentration of CO2 in the atmosphere (Mauna Loa Observatory) is 396.48 parts per million (ppm). The 2012 average is 393.82 ppm. For the past decade (2004-2013) the average annual increase is 2.1 ppm per year. The average for the
Carbon dioxide in Earth's atmosphere - Wikipedia, the free encyclopedia
Carbon dioxide (CO 2) is an important long-lived trace gas in Earth's atmosphere currently constituting about 0.04% (400 parts per million) of the atmosphere. Despite its relatively small overall concentration, CO 2 is a potent greenhouse gas and plays a
Temperature and CO2 concentration in the atmosphere over the past 400 000 years | GRID-Arendal - Map
Global atmospheric concentration of CO2 Atmospheric CO2 has increased from a pre-industrial concentration of about 280 ppmv to about 367 ppmv at present (ppmv= parts per million by volume). CO2 concentration data from before 1958 are from ice core ...
Temperature and CO2 concentration in the atmosphere over the past 400 000 years | GRID-Arendal - Pub
2. Over the last 400,000 years the Earth's climate has been unstable, with very significant temperature changes, going from a warm climate to an ice age in as rapidly as a few decades. These rapid changes suggest that climate may be quite sensitive to int