Tuesday, 6 August 2013: 2:30 PM
Multnomah (DoubleTree by Hilton Portland)
Many previous studies have recently examined spiral rainbands in numerical simulations of tropical cyclones. Almost all of them have simulated tropical cyclones under idealized no-mean-flow conditions, where all winds in the simulation are driven by tropical cyclones only. However, whether rainbands in such no-mean-flow simulations resemble those from observational studies and real-case simulations of tropical cyclones has not been thoroughly examined yet. This study examines spiral rainbands in high-resolution no-mean-flow simulations of tropical cyclones. Comparison indicates that the no-mean-flow simulations contain only radially inward-tilting rainbands outside the eyewall, whose structures resemble distant rainbands.
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