Figure S4: surface heatflux from the region of variable,
eye-following radius broken into components based on the order of the
sine series expansion around the eye.
Further investigation of constant-radius inner regions revealed similar
results, intimating that the asymmetry in the eyewall region is an
important characteristic of the storm to capture. The choice of scale
for the eyewall-following inner region, set at 0.8 to 1.2 times the
radius of maximum winds, was then set by the requirements of curve
fitting the sine series around the radius, balancing the requirements
for narrower spacing to capture higher order asymmetry and narrower band
around the eyewall to minimize the influence of inner eye and rain band
contamination of the eye signal.