Harmful algal blooms (HAB) is one of the most serious marine disasters, which not only reduce fishery production,deteriorates the marine environment, affects coastal tourist industry, but also cause human poison. The satellite remotesensing technology has the characteristics of large-scale, synchronized, low cost and rapid monitoring, it is become animportant method for HAB observation. In this paper, we describe the HAB monitoring system based on remote sensingdata which developed by the Second Institute of Oceanography, China. The system can achieve the whole procedureautomatically from the satellite remote data acquirement and satellite image process, products generation, and it canautomatically identify the HAB region using the spectral reflectance and inherent optical properties derived from remotesensing data. Currently, the National monitoring department has adopted this system for the operational monitoring ofHAB in the East China Sea.
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