Fig. 6
From: Phytoplankton phenology paradox in an isolated tropical lagoon of the northern Red Sea
Diurnal cycle of mean buoyancy frequency (N2), total heat flux (qtot) and mixed layer depth (MLD) daily mean values for both winter (blue) and summer (red) within Sharma Lagoon. Higher N2 values indicate stronger stratification in the lagoon. The cross-correlation between N2 and qtot is strong during summer (maximum r = 0.75 at lag = 3 hours), and weaker during winter (maximum r = 0.38 at lag = 2 h) due to the tidal oscillations. Similarly, the cross-correlation between the MLD and qtot is strong during summer (maximum r = 0.87 at lag = 4 h), and weaker during winter (maximum r = 0.58 at lag = 3 h) qtot peaks around 9am, and reaches the lowest values around 1 am. Data is taken from the regional Delft3D model outputs. The MLD is based on a density threshold of 0.05 kg m-3, and N2 was averaged over the entire water column.
