On October 29, 2015 JPL announced that scientists have found patterns in the carbon dioxide concentrations in Earth’s atmosphere. What is most interesting is tha

“…OCO-2 scientists are now beginning to study the net sources of carbon dioxide as well as their “sinks””

Another interesting video is this supercomputer model of CO2 levels in Earth’s atmosphere for a whole year (2006):

Full story @ JPL: Excitement Grows as NASA Carbon Sleuth Begins Year Two

Orbiting Carbon Observatory – 2 mission page