Some observations of eyewalls have shown the formation of intense mesovorticies within the eye region. These formations may be just curiosities of the hurricane s inner core circulation, or they could be snapshots of an intrinsic mixing process within or near the eye that serves to determine the circulation and thermal structure of the eye. Polygonal eyewalls are shown to form from barotropic instability near the radius of maximum winds. When the instabilities in the eyewall grow to finite amplitude, the vorticity of the eyewall region pools into discrete areas, creating the appearance of polygonal eyewalls. The circulation in these pools suggest a connection to hurricane mesovorticies.
Some researchers simply don t believe in polygonal eyewalls.
They claim they are a function of peculiarities of particular radar observing systems. Secondly, many researchers view polygonal eyewalls as a curiosity having little bearing on fundamental scientific questions such as hurricane motion, structure, and intensity change. This article claims that polygonal eyes are more than just a curiosity and are of interest because they are symptoms of finescale PV mixing processes that are occurring continuously near the center of a hurricane. The model needs refinement when applied to the eye region of a hurricane. The eyeall is affected by different sets of environmental conditions.