🧪 Marine Snow Carbon Pump (2D): Stokes Settling & the Martin Curve

This 2D companion strips the biological carbon pump down to a side-view water column driven by real oceanography math: particle radius and excess density set a genuine Stokes-law terminal velocity, a Martin-curve exponent attenuates each particle's carbon mass with depth exactly the way sediment-trap data is fit in the literature, and a live flux-vs-depth chart compares the analytic prediction against what the on-screen particle population is actually delivering — so dragging the surface-export, size, density, remineralization-rate or column-depth sliders visibly reshapes both the sinking cloud and the fraction of carbon that survives to the seafloor.