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contributor authorHeng, Junyao
contributor authorWang, Yuqing
contributor authorZhou, Weican
date accessioned2019-09-19T10:08:02Z
date available2019-09-19T10:08:02Z
date copyright7/1/2018 12:00:00 AM
date issued2018
identifier otherjas-d-18-0020.1.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4261906
description abstractAbstractIn their comment, Montgomery and Smith critique the recent study of Heng et al. that revisited the balanced and unbalanced aspects of tropical cyclone (TC) intensification based on diagnostics of a full-physics model simulation using the Sawyer?Eliassen equation. Heng et al. showed that the balanced dynamics reproduced to a large extent the secondary circulation in the full-physics model simulation and concluded that balanced dynamics can well explain TC intensification in their full-physics model simulation. Montgomery and Smith suspect the balanced solution in Heng et al. because the basic-state vortex is not exactly in thermal wind balance in the boundary layer and possibly a too-large diffusivity in the numerical model was used. In this reply, we first indicate that the boundary layer spinup mechanism proposed by Smith et al. is a fast response of the TC boundary layer to surface friction and should not be a major mechanism of TC intensification. We then evaluate the possible effect of imbalance in the basic state in the boundary layer on the balanced solution. The results show that although the removal of the imbalance in the boundary layer leads to about a one-third reduction in the maximum inflow near the surface in the inner-core region, the overall effect on the tangential wind budget is marginal because of other compensations. We also show that both the horizontal and vertical diffusivities in the model used in Heng et al. are reasonable based on previous observational studies. Therefore, we conclude that all results in Heng et al. are valid. Some related issues are also discussed.
publisherAmerican Meteorological Society
titleReply to “Comments on ‘Revisiting the Balanced and Unbalanced Aspects of Tropical Cyclone Intensification’”
typeJournal Paper
journal volume75
journal issue7
journal titleJournal of the Atmospheric Sciences
identifier doi10.1175/JAS-D-18-0020.1
journal fristpage2497
journal lastpage2505
treeJournal of the Atmospheric Sciences:;2018:;volume 075:;issue 007
contenttypeFulltext


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