One focus will be on the classification and quantitative depiction of different pathways of environmental interaction, so-called ventilation, based on thermodynamic properties of trajectories at initial and end time. Confirming results from previous work, vertical shear significantly increases the intrusion of low-θe air into the eyewall through the frictional inflow layer. In contrast to previous ideas, vertical shear decreases mid-level ventilation in our (specific) experiments. Consequently, the difference in eyewall θe between the no-shear and shear experiments is largest at low levels. Vertical shear, however, significantly increases detrainment from the eyewall and modifies the thermodynamic signature of the outflow layer. Finally, vertical shear promotes the occurrence of a novel class of trajectories that has not been described previously. These trajectories lose entropy at cold temperatures by detraining from the outflow layer and subsequently warm by 10-15 K.