  We build and test Parker-wind models to apply to observations of large-scale
(of order 100 pc) outflows from Active Galactic Nuclei (AGNs). These models
include detailed photoionization simulations, the observed radially varying
mass profile, adiabatic cooling, and approximations for clouds dragged along in
the wind and the interaction of the wind with the circumnuclear ISM of the
galaxy. We test this model against recent HST/STIS observations of [O III]
emission-line kinematics (in particular, we test against those observed in NGC
4151, but approximately the same kinematics is observed in NGC 1068 and Mrk 3)
to constrain the viability of large-scale thermal winds in AGNs. We find that
adiabatic cooling dominates in these outflows, decelerating Parker winds on
large scales, making them highly unlikely as explanations of the observed
kinematics.
