Areal productivity in a raceway pond can be calculated by dividing the total biomass produced (typically in mass units) by the pond surface area (typically in square meters) and the duration of growth (typically in time units).

The area of an ellipse-shaped raceway pond can be calculated using the formula:

\[ A = π \times a \times b \]

where \( a \) and \( b \) are the lengths of the ellipse's major and minor axes, respectively.