Talked with a more senior member of this MIT group about six months....he advised me that their models do not reflect forest area/oceanic sink data etc as per the UNFAO 2015 Carbon Flux Model. They reflect the same data as used in the Paris Accord  ie the 1990's Fossil Fuel Emissions Model. The 2015 Model tracts 400 units of flow whereas the 1990 Model tracks only 6 of those flow units. UNFAO has collected data on a country by country basis for the last five years on all 400 units of flow so that the 1990's Model can be replaced with the 2015 Model. Example...forest fires in Canada have generated 400 mega tonnes of CO2 per  year per EnviroCanada forest services group. The 1990 Fossil Fuel model shows Canada's CO2 emissions as 732 mega tonnes. Confused?? the forest fire data is in the 394 units tracked by the 2015 Model but not tracked by the 1990 Model. The Paris Accord etal to date ( this article included) ignores 99% of the flows. Canada per 2015 Model consumes global CO2.