  Conformational dynamics is crucial for ribonucleic acid (RNA) function.
Techniques such as nuclear magnetic resonance, cryo-electron microscopy, small-
and wide-angle X-ray scattering, chemical probing, single-molecule F\"orster
resonance energy transfer or even thermal or mechanical denaturation
experiments probe RNA dynamics at different time and space resolutions. Their
combination with accurate atomistic molecular dynamics (MD) simulations paves
the way for quantitative and detailed studies of RNA dynamics. First,
experiments provide a quantitative validation tool for MD simulations. Second,
available data can be used to refine simulated structural ensembles to match
experiments. Finally, comparison with experiments allows for improving MD force
fields that are transferable to new systems for which data is not available.
Here we review the recent literature and provide our perspective on this field.
