Sadly many carbon sinks (natural processes that remove carbon dioxide from the atmosphere) appear to be turning into carbon sources. The effect of this is to increase the rate of increase of carbon dioxide in the air — a positive feedback, the kind of thing that causes system to spin out of control and change irreversibly. In other words, the the opposite of a thermostat, the well known simple negative feedback mechanical device installed to keep temperatures within a certain range.
“State of the Carbon Cycle Report” for North America not does have good news. Science Daily
