Question Details
NOAA
What will the 2012 NOAA average global CO2 level be?
kruijs in
Science
» Environment
Settled on 02/06/2013 07:49 Settled by
kruijsftp://ftp.cmdl.noaa.gov/ccg/co2/trends/co2_annmean_gl.txt
Predictions
Background
The concentration of carbon dioxide in the atmosphere of Barrow, Alaska, reached 400 parts per million (ppm) this spring, according to NOAA measurements, the first time a monthly average measurement for the greenhouse gas attained the 400 ppm mark in a remote location.
Carbon dioxide (CO2), emitted by fossil fuel combustion and other human activities, is the most significant greenhouse gas contributing to climate change.
Average global levels of CO2 were 390.4 ppm in 2011, according to NOAA measurements, and will likely reach 400 ppm about 2016. Before the Industrial Revolution of the 1880s, global average CO2 was about 280 ppm.
http://researchmatters.noaa.gov/news/Pages/arcticCO2.aspx
Annual mean levels:
ftp://ftp.cmdl.noaa.gov/ccg/co2/trends/co2_annmean_gl.txt
Annual growth levels:
ftp://ftp.cmdl.noaa.gov/ccg/co2/trends/co2_gr_gl.txt
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