Can Dynare simulate the impact of multiple shocks on a single variable?

[jpfeifer]

See

Sequences of both negative and positive shockss

Using the simult_-function of Dynare, you can simulate the model with any given sequence of shocks that you want. An example is at github.com/JohannesPfeifer/DSGE_mod/blob/master/RBC_news_shock_model/RBC_news_shock_model.mod

and

Simultaneous shocks

Hi, this is possible in Dynare by specifying a correlated shock. E.g. call the common epscommon and add it to both equations you want to perturb. Note that this is not usually done in the literature as most papers consider first-order approximated model. There everything is linear. Hence, there is not additional value of simultaneously shocking two variables as the IRF is simply the sum of the two individual IRFs.