Major changes in comparison to the previous GOSAT are:
* Improved measurement precision.
* FTS-2 can also monitor carbon monoxide (CO) and nitrogen dioxide (NO).
* FTS-2 can select cloud-free point automatically for observation.
* While GOSATs CAI was observing nadir view, GOSAT-2s CAI-2 observes forward (20 degree) and backward (20 degree) simultaneously.
* CAI-2 can also monitor PM2.5 and black carbon.