CHARACTERIZATION OF CHATTONELLA RED TIDE DISTRIBUTION IN THE YATSUSHIRO SEA USING MULTI-SATELLITE DATA

Abstract

 The purpose of this study was to verify the feasibility of high-resolution, high-observation frequency, and high-wavelength resolution red tide observations in the Yatsushiro Sea, where red tide damage is serious, using multiple satellite data such as Sentinel-2, GCOM-C, and Himawari-8. To achieve this goal, we analyzed the data on July 15, 2021 under the large-scale Chattonella red tide with simultaneous satellites observation. The results revealed a high correlation between the blue and green two-band model and red tide cell density in the high-resolution Sentinel-2 data. Furthermore, it was found that there is a positive correlation between chlorophyll-a concentration data from Himwari-8 and red tide cell density.