best be illustrated by GOCI hourly images acquired on 3 August 2015. The ()K 490d common GOCI image with patchy cloud cover, which was masked in the bio-optical ()K 490d map derived from the GOCI image acquired at 8:16 a.m. is provided in Figure 10(a). This is a values sparsely distributed product as pixels with no data, as in Figure 10(a). However, there are still abnormal pixels with high ()K 490d 130° E 131° E 132° E 133° E 134° E 135° E 130° E 131° E 132° E 133° E 134° E 135° E 130° E 131° E 132° E 133° E 134° E 135° E (a) 130° E 100 km 131° E 132° E 133° E 134° E 135° E (b) 130° E 131° E 132° E 133° E 134° E 135° E 130° E 131° E 132° E 133° E 134° E 135° E 100 km 130° E 131° E 132° E 133° E 134° E 135° E (c) 130° E 100 km 131° E 132° E 133° E 134° E 135° E (d) 130° E 131° E 132° E 133° E 134° E 135° E 130° E 131° E 132° E 133° E 134° E 135° E 100 km 130° E 131° E 132° E 133° E 134° E 135° E (e) 130° E 100 km 131° E 132° E 133° E 134° E 135° E (f) 100 km FIGURE 8. Hourly Kd(490) maps overlaid with the reliable displacement vectors derived from the Kd(490) acquired on 5 April 2011 at (a) 9:16 a.m., (b) 10:16 a.m., (c) 11:16 a.m., (d) 12:16 p.m., (e) 1:16 p.m., and (f) 2:16 p.m. and from the one acquired 1 h later. SEPTEMBER 2021 IEEE GEOSCIENCE AND REMOTE SENSING MAGAZINE 149 38° N 38° N 40° N 40° N 38° N 38° N 40° N 38° N 38° N 40° N 40° N 38° N 38° N 38° N 39° N 40° N 38° N 40° N 40° N 38° N 38° N 39° N 40° N 40° N 38° N 38° N 38°8 N 39° N 40° N 40° N 40° N 38° N 39° N 40° N 38° N 39° N 40° N 38° N 39° N 40° N