Abstract:
These data set contain Carbon Dioxide (CO2) column averaged dry air mole fraction for all soundings for which retrieval was attempted. These are the highest-level products made available by the ACOS Project, from Build ID 2.08.
The ACOS Level 2 product set consists of products that focus on measuring column-averaged CO2 dry air mole fraction (xco2). The measurements are
... extracted from observations made by JAXA's Greenhouse gas Observation SATellite (GOSAT). The global coverage that is achieved by GOSAT is repeated every three days at the highest resolution yet achieved from orbit.
The GOSAT team at JAXA produces GOSAT TANSO-FTS Level 1B (L1B) data products for internal use and for distribution to collaborative partners, such as ESA and NASA. These calibrated products are augmented by the ACOS Project with additional geolocation information and further corrections. These ACOS Level 1B products (with calibrated radiances and geolocation) are the input to the ACOS Level 2 production process.
Additional quality information can be found at
http://disc.sci.gsfc.nasa.gov/acdisc/documentation/Data_Quality_Sta...
The short name for this data type is ACOS_L2S. 
