An analytical model of maximum potential intensity for tropical cyclones incorporating the effect of ocean mixing

AMS Citation:
Miyamoto, Y., G. H. Bryan, and R. Rotunno, 2017: An analytical model of maximum potential intensity for tropical cyclones incorporating the effect of ocean mixing. Geophysical Research Letters, 44, 5826-5835, doi:10.1002/2017GL073670.
Date:2017-06-16
Resource Type:article
Title:An analytical model of maximum potential intensity for tropical cyclones incorporating the effect of ocean mixing
Abstract: An analytical model of maximum potential intensity (PI) for tropical cyclones (TCs) incorporating wind-induced ocean cooling is developed on the basis of Emanuel's PI theory. The model consists of a one-dimensional ocean and an axisymmetric TC vortex that is translating at a constant speed. The model advances upon previous approaches by accounting for TC size and shape. The PI is determined at the radius of maximum winds by radially integrating the effect of ocean mixing using a specified wind profile. The resulting analytic ocean cooling agrees well with numerical solutions, and the new PI model better captures maximum intensities of observed TCs compared with Emanuel's original PI. It is also shown that the degree of cooling (i.e., ocean's feedback to atmosphere) can be quantified by a dimensionless parameter, representing the ratio of atmospheric forcing to ocean stability.
Peer Review:Refereed
Copyright Information:Copyright 2017 American Geophysical Union.
OpenSky citable URL: ark:/85065/d7hq42bv
Publisher's Version: 10.1002/2017GL073670
Author(s):
  • Yoshiaki Miyamoto
  • George H. Bryan - NCAR/UCAR
  • Richard Rotunno - NCAR/UCAR
  • Random Profile

    SOFT ENG/PROG IV

    Recent & Upcoming Visitors