Simulated temporal evolution of plasma properties during the formation and disappearance of MBP2. Top left: normalised G-band intensity. Top right: evolution of total pressure (solid), gas pressure (dotted), magnetic pressure (dashed) and mass density (dash-dotted) at log(τ_{500 nm}) = 0. Bottom left: evolution of modulus of the magnetic field (solid) and line-of-sight velocity (dashed) at log(τ_{500 nm}) = 0, where downward (red-shifted) velocity is positive. Bottom right: plasma temperature evolution at log(τ_{500 nm}) = 0 (solid), log(τ_{500 nm}) = −1 (dashed) and log(τ_{500 nm}) = −2 (dotted). Markers along the x-axis indicate times at which images and profiles were taken for Fig. A.2.