  The Ca II infrared triplet around 8540 A is a good candidate for observing
chromospheric magnetism. We show results from combining a radiation
hydrodynamic simulation with a Stokes synthesis code. The simulation shows
interesting time-varying behavior of the Stokes V profiles as waves propagate
through the lines' formation regions. Disappearing and reappearing lobes in the
Stokes V profiles as well as profile asymmetries are closely related to the
atmospheric velocity gradients.
