MULTI-MISSION REMOTE SENSING OF SUSPENDED PARTICULATE MATTER AND DIFFUSE ATTENUATION COEFFICIENT IN THE YANGTZE ESTUARINE AND COASTAL WATERS

摘要

During the Dragon-3 project (ID: 10555) period, we developed and improved the atmospheric correction algorithms (AC) and retrieval models of suspended sediment concentration (66&) and diffuse attenuation coefficient (K_d) for the Yangtze estuarine and coastal waters. The developed models were validated by in situ measurements with consistently stable and fairly accurate estimations, reproducing reasonable distribution maps of SSC and K_d over the study area. Spatial-temporal variations of SSC were presented and the mechanisms of the sediment transport were discussed. We further examined the compatibility of the developed AC algorithms and66& retrieval model and the consistency of satellite products for multi-sensor such as MODIS/Terra/Aqua, MERIS/Envisat, MERSI/ FY-3 and GOCI. The inter-comparison of multi-sensor suggested that different satellite products can be combined to increase revisit frequency and complement a temporal gap of time series satellites that may exist between on-orbit and off-orbit, facilitating a better monitor on the spatial-temporal dynamics of SSC.