Multi- and Hyperspectral Ocean Color Measurements from Long Island Sound Observation Platform (LISCO): Comparison with Satellite Measurements and Assessments of Uncertainties

摘要

The Long Island Sound Coastal Observational platform (LISCO) near Northport, New York, has been recently established to support satellite data validation LISCO is equipped with both multispectral SeaPRISM and hyperspectral HyperSAS radiometers for ocean color measurements. LISCO substantially expands observational capabilities for the continuous monitoring and assessment of the ocean color satellite data quality. These expanded capabilities offer a potential for improving calibration and validation activities for the current and future Ocean Color satellite missions, as well as for satellite inter- comparison and spectral characterization of coastal waters Results of measurements obtained from both instruments, in operation since October 2009, are presented, evaluated and compared with ocean color satellite data. This comparison with normalized water-leaving radiance derived from SeaPRISM and from MERIS. MODIS and SeaWiFS showed satisfactory correlations (r is greater than 0.9 at 550nm) and consistencies (APD is less than 15% at 550nm). These results demonstrated that the use of the LISCO site is appropriate for calibration/validation of ocean color satellites in coastal waters, and as a key element of the AERONET-OC network. It is thus possible to envisage wider use of LISCO site to monitor current and future ocean color multispectral (NPOESS, Sentinel...) and hyperspectral (HICO) satellite missions.