LOL! Not to mention the fact that aerosols are not greenhouse gases. Had he said that biomass was a carbon sink that would be correct, but to say that plants or trees change their internal metabolic structure at night is ludicrous.
The most famous graph in atmospheric chemistry is the Keeling curve, a study of CO2 emissions over a 50 year period on Muana Loa, Hawaii. It factors in carbon dioxide atmospheric variability due to annual biomass diebacks.