Fig. 4: Seasonal amplitude changes in an idealized diffusive model.
From: Weakening of subsurface ocean temperature seasonality over the past four decades
a Monthly ocean temperature changes (shading in °C) resulting from a 2% reduction in vertical mixing, obtained from the difference between the simulation with a diffusivity of 9.8 × 10−5 m2 s−1 and the control simulation with a diffusivity of 10 × 10−5 m2 s−1, for mixed layer depth (MLD) set at 60 m. Climatological ocean temperatures (contour in °C) from the control simulation are superimposed. b Vertical profiles of seasonal amplitude changes (lines in °C per decade) between the simulation with a diffusivity of 9.8 × 10−5 m2 s−1 and the control simulation with a diffusivity of 10 × 10−5 m2 s−1, for MLD set at 50 m, 70 m, 90 m, and 110 m. Bars represent the climatological seasonal amplitude (in °C per decade) from the simulation with a diffusivity of 10 × 10−5 m2 s−1 and a MLD of 110 m.
