GCOM-C/SGLI capability for coastal observation

JAXA polar-orbit satellite, Global Change Observation Mission for Climate (GCOM-C) which carries Secondgeneration Global Imager (SGLI) has been launched on 23 Dec. 2018. SGLI has 19 channels from near-UV (380 nm) to thermal infrared (12 μm) wavelengths with swath-width of 1150-km (for visible and near infrared, VNIR, channels) or 1400-km (for short-wave infrared, SWIR, and thermal infrared, TIR, channels). The SGLI 250-m spatial resolution of 11 VNIR channels in 380-867 nm, one SWIR channel of 1.6 μm, and two TIR channels of 11 μm and 12 μm can be advantage in monitoring fine structures of coastal areas through the retrieved products such as ocean color and seasurface temperature. After starting the test observation since 1 Jan. 2018, we are investigating calibration performance including on-board calibration, vicarious/cross calibration and image quality (random or stripe noise). The initial product evaluation indicates that the SGLI data has capability for the coastal observations with the 250-m spatial resolution. The SGLI standard products will be released to the public after the initial evaluation phase until Dec. 2018.