The comparison between satellite SSTs and
Phytoplankton bloom was observed in Southwestern Lake on August 6 at 8:28 in the morning (Fig. 5A). The Z-VDVAD-FMK bloom became increasingly serious from 8:28 to 9:28 a.m. In the next hour (9:28 to 10:28), however, the surface accumulated phytoplankton bloom wore off significantly and disappeared in the next two hours (10:28 to 12:28). The Cchl-a in Southwestern Lake remained lower from 13:28 to 15:28. The Cchl-a in Central Lake went through a process from low to high and back to low. The Cchl-a in Northwestern Lake (including Zhushan Bay and Meiliang Bay) maintained a high level, and surface accumulated phytoplankton bloom appeared in some areas in Northwestern Lake.
After 17 h, or the next morning, a large area of surface accumulated phytoplankton bloom appeared in Northwestern Lake. The surface accumulated phytoplankton bloom covered almost the entire Zhushan Bay and Meiliang Bay at that point (Fig. 5B, 8:28). The duration of this floating phytoplankton bloom was very short. A large area of surface accumulated phytoplankton bloom in the Northwestern Lake disappeared, except in Zhushan Bay and in the waterfront of Western Lake, during the next 5 h (9:28 to 15:28). However, high Cchl-a, in Central Lake and northwestern area of Xishan Island, eventually formed a floating phytoplankton bloom in Central Lake (Fig. 5B, 15:28). From 9:28 to 13:28 on August 7, a patchy surface accumulated phytoplankton bloom appeared in Southwestern Lake (Fig. 5B, 11:28; 12:28). This phytoplankton bloom was hard to monitor from the high time resolution satellite data.