DEVELOPMENT OF GOCI-II The Next Geostationary Ocean Color Imager with Potential Application for the Pacific Islands

Abstract

After the successful launch and operation of Geostationary Ocean Color Imager (GOCI), the first pathfinder of ocean color remote sensing in geostationary orbit from 2010, necessity of successive GOCI mission regarding expected lifetime of 7.7 years, is remarkably increasing into the international oceanographers and policy/decision makers as well as domestic GOCI users in Korea.Instrument Development of GOCI-II has been started since 2013 with a planned launch in 2019. The mission and user requirements of GOCI-II were defined by Korea Institute of Ocean Science & Technology (KIOST) with the collaboration of the international GOCI PIs (Principal Investigators). GOCI-II is being developed for the monitoring of the full Earth disk from 128.2˚E longitude in geostationary orbit (35,786km altitude), and for the image acquisition at the local area freely defined by the user with 250m GSD at nadir with 12 VNIR spectral bands (370~885nm). These enhanced features will enable the monitoring of marine disasters such as Harmful Algal Blooms (HABs, incl. red tide), typhoon, tsunami, & etc. ,and research of long-term ocean environmental change with better image quality. Four more spectral bands are added to improve the accuracy of data products such as chlorophyll concentration, total suspended sediments, dissolved organic matters, and etc. Panchromatic band is newly implemented for more accurate geometric correction with sta.7 years, is remarkably increasing into the international oceanographers and policy/decision makers as well as domestic GOCI users in Korea.Instrument Development of GOCI-II has been started since 2013 with a planned launch in 2019. The mission and user requirements of GOCI-II were defined by Korea Institute of Ocean Science & Technology (KIOST) with the collaboration of the international GOCI PIs (Principal Investigators). GOCI-II is being developed for the monitoring of the full Earth disk from 128.2˚E longitude in geostationary orbit (35,786km altitude), and for the image acquisition at the local area freely defined by the user with 250m GSD at nadir with 12 VNIR spectral bands (370~885nm). These enhanced features will enable the monitoring of marine disasters such as Harmful Algal Blooms (HABs, incl. red tide), typhoon, tsunami, & etc. ,and research of long-term ocean environmental change with better image quality. Four more spectral bands are added to improve the accuracy of data products such as chlorophyll concentration, total suspended sediments, dissolved organic matters, and etc. Panchromatic band is newly implemented for more accurate geometric correction with sta