  Here we demonstrate how the standard, temporal-only,
dynamical-decoupling-based noise spectroscopy method can be extended to also
encompass the spatial degree of freedom. This spatiotemporal spectroscopy
utilizes a system of multiple qubits arranged in a line that are undergoing
pure dephasing due to environmental noise. When the qubits are driven by
appropriately coordinated sequences of $\pi$ pulses the multi-qubit register
becomes decoupled from all components of the noise, except for those
characterized by frequencies and wavelengths specified by the pulse sequences.
This allows for employment of the procedure for reconstruction of the
two-dimensional spectral density that quantifies the power distribution among
spatial and temporal harmonic components of the noise.
