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contributor authorZhang, Jun A.
contributor authorDrennan, William M.
contributor authorBlack, Peter G.
contributor authorFrench, Jeffrey R.
date accessioned2017-06-09T16:28:10Z
date available2017-06-09T16:28:10Z
date copyright2009/08/01
date issued2009
identifier issn0022-4928
identifier otherams-68422.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4209979
description abstractAs part of the Coupled Boundary Layers Air?Sea Transfer (CBLAST)-Hurricane program, flights were conducted to directly measure turbulent fluxes and turbulence properties in the high-wind boundary layer of hurricanes between the outer rainbands. For the first time, vertical profiles of normalized momentum fluxes, sensible heat and humidity fluxes, and variances of three-dimensional wind velocities and specific humidity are presented for the hurricane boundary layer with surface wind speeds ranging from 20 to 30 m s?1. The turbulent kinetic energy budget is estimated, indicating that the shear production and dissipation are the major source and sink terms, respectively. The imbalance in the turbulent kinetic energy budget indicates that the unmeasured terms, such as horizontal advection, may be important in hurricane boundary layer structure and dynamics. Finally, the thermodynamic boundary layer height, estimated based on the virtual potential temperature profiles, is roughly half of the boundary layer height estimated from the momentum flux profiles. The latter height where momentum and humidity fluxes tend to vanish is close to that of the inflow layer and also of the maximum in the tangential velocity profiles.
publisherAmerican Meteorological Society
titleTurbulence Structure of the Hurricane Boundary Layer between the Outer Rainbands
typeJournal Paper
journal volume66
journal issue8
journal titleJournal of the Atmospheric Sciences
identifier doi10.1175/2009JAS2954.1
journal fristpage2455
journal lastpage2467
treeJournal of the Atmospheric Sciences:;2009:;Volume( 066 ):;issue: 008
contenttypeFulltext


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