“…The maximum effect range of green tides can extend to tens of thousands of square kilometers (Keesing et al, 2011), and thus, satellites can be effectively used to detect them (Hu, 2009 Shi and Wang, 2009;Choi et al, 2010;Liu et al, 2010;Keesing et al, 2011;Lee et al, 2011;Cui et al, 2012;Son et al, 2012;Xing et al, 2015;Xing and Hu, 2016), Floating Algae Index (FAI, Hu, 2009;Hu et al, 2010;Lee and Lee, 2012;Xing and Hu, 2016), Enhanced Vegetation Index (EVI, Hu, 2009;Son et al, 2012;Son et al, 2015), Virtual-Baseline Floating macroAlgae Height (VB-FAH, Xing and Hu, 2016), Floating Green Algae Index (FGAI, Lee and Lee, 2012), Index of floating Green Algae for GOCI (IGAG, Son et al, 2012;Son et al, 2015), and the visual interpretation of false color images (Lü and Qiao, 2008;Zhang et al, 2013). While these methods differ in terms of the resolution at which green tide can be quantified, they are all capable of identifying the presence of these algae accurately.…”