There is a connection that I have observed in the temperature and CO2 data. The CO2 concentrations follow global temperatures by 800 years. Temperature effects CO2 not the other way around.
I meant that “connection” as a driver, not as a result.
Clearly the oceans significantly affect the CO2 levels in the atmosphere based on water temperature. The colder the water the more CO2 the oceans can absorb (the process reverses when you warm the water). It would make sense that all that thermal mass in the oceans lags far behind atmospheric temperatures.