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- Title
Comments on ''An Evaluation of Hurricane Superintensity in Axisymmetric Numerical Models''.
- Authors
MAKARIEVA, A. M.; NEFIODOV, A. V.; SHEIL, D.; NOBRE, A. D.; CHIKUNOV, A. V.; PLUNIEN, G.
- Abstract
In a recent paper Rousseau-Rizzi and Emanuel (2019) presented a derivation of an upper limit on maximum hurricane velocity at the ocean surface. This derivation was based on a consideration of an infinitely narrow (differential) Carnot cycle with the warmer isotherm at the point of the maximum wind velocity. Here we show that this derivation neglected a significant term describing the kinetic energy change in the outflow. Additionally, we highlight the importance of a proper accounting for the power needed to lift liquid water. Finally, we provide a revision to the formula for surface fluxes of heat and momentum showing that, if we accept the assumptions adopted by Rousseau-Rizzi and Emanuel (2019), the resulting velocity estimate does not depend on the flux of sensible heat.
- Subjects
HEAT flux; CARNOT cycle; HURRICANES; WIND speed; KINETIC energy
- Publication
Journal of the Atmospheric Sciences, 2020, Vol 77, Issue 11, p3971
- ISSN
0022-4928
- Publication type
Article
- DOI
10.1175/JAS-D-20-0156.1