OCO-2 GEOS Level 3 daily, 0.5x0.625 assimilated CO2 V10r (OCO2_GEOS_L3CO2_DAY) at GES DISC
This is the Gridded Daily OCO-2 Carbon Dioxide assimilated dataset. 

 The OCO-2 mission provides the highest quality space-based XCO2 retrievals to date. However, the instrument data are characterized by large gaps in coverage due to OCO-2’s narrow 10-km ground track and an inability to see through clouds and thick …