This research expands upon the work of Zhang et al. (2013), which composited dropsondes from 19 hurricanes and found kinematic and thermodynamic asymmetries in the inner core TCBL between mean shear-relative quadrants. Namely, the deepest and strongest mixed- and radial inflow layers were observed in the downshear-right quadrant, with progressively shallower layers counter-clockwise until a minimum in the upshear-right quadrant. Zhang et al. (2013) posited that the asymmetries in the composite data are likely linked to convective asymmetries associated with environmental wind shear. Similarly, Riemer et al. (2010) proposed that vertical shear impacts the TC inflow layer through downdrafts in the convective asymmetry, importing air with low equivalent potential temperature into the boundary layer outside of the eyewall.
However, variation in TCBL asymmetry among different storms is less understood. DeMaria et al. (2005), Tang and Emanuel (2010), and Riemer et al. (2010) have noted the differing responses throughout TCs to the environmental wind shear depending on their strength and intensity. The difference in TC response to wind shear implies a dependency of TCBL asymmetry on TC strength and intensity. The examination of individual hurricaneseach with their own measures of strength and environmental influencewill provide further insight regarding TCBL structure, their response to the outside environment, and their relation to the storm in which it is contained.