Impact on the temporal correlation curves ${\tilde{\mathcal{C}}}^{\mathrm{t}}$ (left panel) and the map of the best fit correlation coefficients ${\tilde{\mathcal{C}}}^{2\mathrm{D}}$ (right panel) of a frozen flow perturbation of wind speed υ₀ = 15 m s⁻¹ aligned with a lateral error of δ_x = −20 %A in a noise limited regime n^ph = 10 and controlling n^mod = 800. Coloured curves: best temporal correlation fit ${\tilde{\mathcal{C}}}^{\mathrm{t}}$ for different sets of controlled modes (mean filter with a sliding window of ±3 data points). Black curves: theoretical correlation curve ${\mathcal{C}}_0$. The coloured dashed lines emphasise the temporal frequencies f^‖ = k₀υ₀ associated with the spatial frequencies k₀ highlighted on the right panel.