Results for the reconstruction of the non-uniform coronal heating pulse using one-dimensional HD simulations of the unsheared arcade (Sect. 3.3). The panels show the temperature, density, pressure, and field-aligned velocity as functions of position across the arcade (left-hand axis), at a coronal height of x = 25 Mm, at the time of the first density peak (t = 150 s). The lines are colour coded in a way that reflects the transverse resolution used with solid blue (dashed green) representing the N_y = 1024 (N_y = 64) solution, which is imposed on top of the transverse heating profile (solid red line, right-hand axis).