Figure 4: Illustration of the Meridional Wind-Evaporation- Mixed Layer- SST Mechanism. Sequences for understanding: (1) Air circulation: warm and moist (cool and dry) air movement from equator (Pole). (2) Humidity difference between at the air-sea interface facilitating/suppressing evaporation. (3) less/more evaporation suppresses/enhances mixing in the upper ocean due to light/heavy surface water compared to the water below (called negative/positive buoyancy). (4) Constant solar energy distribution in less/more volume of upper ocean mixed water generates warm/cool sea surface temperature.

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