Technical Note on Quality Assessment for GOSAT-2

This document reports the assessment results for GOSAT-2 Mission. GOSAT-2 is a Japanese mission which was launched on October 29, 2018. The experiencesgained from the operation of the GOSAT-1 mission with regard to payload calibration and validationactivities served as input for the requirements of the GOSAT-2 mission. GOSAT-2 is equipped withtwo sensors: the Thermal and Near-infrared Sensor for Carbon Observation (TANSO)-FourierTransform Spectrometer 2 (FTS-2) and the TANSO-Cloud and Aerosol Imager 2 (CAI-2). The FTS-2 is a Fourier transform spectrometer with along and cross track pointing mechanism. It observesthe sun light reflected by the Earth’s surface or scattered by clouds or aerosols (NIR and SWIRbands) and the thermal emission from both the Earth’s surface and the atmosphere. Additionallyto the spectral coverage of GOSAT, its successor GOSAT-2 includes the 2.3 μm band with CO,H2O, and CH4 absorption bands.