The evidence grows that
- Temperature drives carbon dioxide, and
- man made carbon dioxide is a minor contributor to carbon dioxide concentration in the atmosphere
Atmospheric verification of anthropogenic CO2emission trends, Roger J. Francey et al, Nature Climate Change 3, 520–524 (2013) doi:10.1038/nclimate1817
A recent paper published in Nature Climate Change finds a disconnect between man-made CO2 and atmospheric levels of CO2, demonstrating that despite a sharp 25% increase in man-made CO2 emissions since 2003, the growth rate in atmospheric CO2 has slowed sharply since 2002/2003. The data shows that while the growth rate of man-made emissions was relatively stable from 1990-2003, the growth rate of atmospheric CO2 surged up to the record El Nino of 1997-1998. Conversely, growth in man-made emissions surged ~25% from 2003-2011, but the growth rate of atmospheric CO2 has flatlined since 1999 along with global temperatures. The data demonstrates temperature drives CO2 levels due to ocean outgassing, man-made CO2 does not drive temperature, and that man is not the primary cause of the rise in CO2 levels.
Tags: carbon dioxide, Carbon dioxide in Earth's atmosphere, climate change, El Niño, environment, Greenhouse gas, Mauna Loa
The k2p blog 