Development of the next geostationary ocean color imager, GOCI-II

Abstract

Imager (GOCI), the first pathfinder of ocean color remote sensing in geostationary orbit from 2010, necessity of succession of GOCI mission after the expected lifetime by 2018, is gradually increasing into the international ocean color remote sensing users as well as domestic users in Korea. As a successor of GOCI, development of GOCI-II has been started in 2012 with a planned launch in 2018. The mission and user requirements of GOCI-II are defined by Korea Institute of Ocean Science and Technology (KIOST) and international GOCI PI (Principal Investigators). GOCI-II will be able to monitor the nearly full Earth disk area on 128.2˚E longitude in geostationary orbit, and to acquire the local area(observation region can be freely definable by user) image with 250m spatial resolution at nadir with 12 spectral bands from visible to NIR (370~885nm). These enhanced features will enable the monitoring and research of long-term ocean environment change with better image quality. Additional 4 spectral bands are added to improve the accuracy of data products such as chlorophyll concentration, total suspended sediments, dissolved organic matters, enhancement of atmospheric correction, and to have a novel capability such as PFT (Phytoplankton Functional Type) which enables to discriminate harmful algae bloom. Newly implemented panchromatic band with 402~885nm bandwidth is expected to enable star imaging for themote sensing users as well as domestic users in Korea. As a successor of GOCI, development of GOCI-II has been started in 2012 with a planned launch in 2018. The mission and user requirements of GOCI-II are defined by Korea Institute of Ocean Science and Technology (KIOST) and international GOCI PI (Principal Investigators). GOCI-II will be able to monitor the nearly full Earth disk area on 128.2˚E longitude in geostationary orbit, and to acquire the local area(observation region can be freely definable by user) image with 250m spatial resolution at nadir with 12 spectral bands from visible to NIR (370~885nm). These enhanced features will enable the monitoring and research of long-term ocean environment change with better image quality. Additional 4 spectral bands are added to improve the accuracy of data products such as chlorophyll concentration, total suspended sediments, dissolved organic matters, enhancement of atmospheric correction, and to have a novel capability such as PFT (Phytoplankton Functional Type) which enables to discriminate harmful algae bloom. Newly implemented panchromatic band with 402~885nm bandwidth is expected to enable star imaging for th