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.
@article{arxiv.astro-ph/0510744,
title = {Simulation of quiet Sun waves in the Ca II infrared triplet},
author = {A. Pietarila and H. Socas-Navarro and T. Bogdan and M. Carlsson and R. F. Stein},
journal= {arXiv preprint arXiv:astro-ph/0510744},
year = {2009}
}