An evaluation on short-term salvage effectiveness of Ulva prolifera green tide based on satellite data

The recurrent Yellow Sea green tide, caused by <i>Ulva prolifera,</i> has caused severe economic and social damages along Shandong and Jiangsu coasts. Recently, governments have invested huge amount of time and money to salvage the floating biomass before their possible massive beaching. In this study, based on remote sensing data, we built and applied a method to evaluate the short-term salvage effectiveness of <i>U. prolifera</i> green tide during the upstream salvage in 2023. The method considered the drifting, aggregation and dispersion of floating <i>U. prolifera</i> mats influenced by marine and atmospheric environment, and evaluated the biomass reduction before and after salvaging and salvage efficiency of boats. The results would provide technical support for short-term decision-making, such as allocation and adjustment of boats, to minimize resource wastage.