Use of AERONET-OC for validation of SGLI/GCOM-C products in Ariake Sea, Japan

Abstract A station of AErosol RObotic NETwork Ocean Color (AERONET-OC) has been set on the Ariake Observation Tower Saga University April, 2018, for verification Second generation Global Imager (SGLI)/Global Change Mission-Climate (GCOM-C). Remote sensing reflectance (Rrs) observed by AERONET-OC was used SGLI. SGLI Version 1 data underestimated shortwave Rrs and (380) Rrs(412) were mostly negative, while estimation improved 2 with correction to be positive. It indicated that absorptive aerosol influenced atmospheric caused underestimation Rrs. Simple linear method improve also worked well specifically data. Water constituents, chlorophyll- a (Chl- ), total suspended matter (TSM) colored dissolved organic (CDOM) verified ship observation All constituents from Rrs, although Chl- CDOM. regression algorithms examined in situ as data, it more sophisticated may required. Time series water derived compared river discharge spring–neap tidal cycle. The results behavior, such increase after interaction TSM cycles observed, estimations not completely separated algorithms.