The Second-generation Global Imager (SGLI) on the Global Change Observation Mission (GCOM) is a multi-band imaging radiometer in the wavelength range of near-UV to thermal infrared. SGLI will provide high accuracy measurements of Ocean, Atmosphere, Land and Cryosphere. SGLI project successfully completed its Bread Board Model (BBM) evaluation last year and currently under Engineering Model (EM) development phase. This paper describes current development status of the SGLI instrument.© (2009) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.