Fig. 10

Depth-time diagrams of the spatially averaged mesoscale (left, a1-f1) and submesoscale (right, a2-f2) APE budgets (color shading; 10−7 \(\:{m}^{2}/{s}^{3}\)) within the MESM region (marked by the black box in Fig. 5) from November 30, 2016 to February 20, 2017. The thick-black line in each panel denotes the spatially averaged mixed layer depth (MLD), which is defined as the depth at which potential density is different from the sea surface density anomaly by 0.0355.