Coronel, R., M. Sawada, and T. Iwasaki, 2016: Impacts of surface drag coefficient and vertical mixing schemes on the structure and energetics of Tropical Cyclone Megi (2010) during intensification. J. Meteor. Soc. Japan, 94, 55-73.
http://doi.org/10.2151/jmsj.2016-004 Graphical Abstract with highlights
- Using the MRI/JMA nonhydrostatic model with Deardorff (DF) PBL parameterization, tropical cyclone (TC) Megi (2010) is studied as it intensifies over the ocean.
- At 2-km resolution, the DF scheme simulates more accurate results with deeper central pressure, and shallower maximum winds and inflow layer than the Mellor-Yamada-Nakanishi-Niino scheme.
- Increasing the surface friction with surface drag yields a weaker small TC whereas enhancing the frictional eddy-stress with MYNN scheme simulates a weaker large TC.
- The impact of the friction-induced structural change on the energetics of TC Megi is dual: it enhances the dynamical energy conversion but also amplifies energy loss.