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Effects of Roll Vortices on Turbulent Fluxes in the Hurricane Boundary Layer

Zhang, June A and Katsaros, Kristina B and Black, Peter G and Lehner, Susanne and French, Jeffrey R and Drennan, William M (2008) Effects of Roll Vortices on Turbulent Fluxes in the Hurricane Boundary Layer. Boundary-Layer Meteorology, pp. 1-17. Springer. DOI: 10.1007/s10546-008-9281-2. ISSN 0006-8314 (Print) 1573-1472 (Online).

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Boundary-layer secondary circulations or ‘roll vortices’ can have a significant influence on the turbulent exchange of momentum, sensible heat and moisture throughout the hurricane boundary layer. In this study, analyses of data from a WP-3D aircraft of the National Oceanic and Atmospheric Administration (NOAA) are presented. As part of the Coupled Boundary Layer Air-Sea Transfer (CBLAST)-hurricane experiment sponsored through the Office of Naval Research and NOAA’s annual hurricane research program, flights were conducted to investigate energy exchange across the air–sea interface. We present the first in-situ aircraft-based observations of rolls in the hurricane boundary layer and investigate their influence on energy and momentum exchange. The rolls detected in Hurricane Isidore (year 2002) have a characteristic wavelength of about 900 m, in good agreement with analyses of data from a synthetic aperture radar image captured by the Canadian Space Agency’s RADARSAT satellite in the same storm. Our analyses of the airborne data suggest that roll vortices may be a significant factor modulating the air–sea momentum exchange.

Document Type:Article
Title:Effects of Roll Vortices on Turbulent Fluxes in the Hurricane Boundary Layer
AuthorsInstitution or Email of Authors
Zhang, June AUniversity of Miami
Katsaros, Kristina BNOAA/AOML Miami
Black, Peter GNOAA/AOML Miami
Lehner, SusanneUNSPECIFIED
French, Jeffrey RUniversity of Wyoming Laramie
Drennan, William MUniversity of Miami
Date:11 February 2008
Journal or Publication Title:Boundary-Layer Meteorology
Refereed publication:Yes
In ISI Web of Science:Yes
Page Range:pp. 1-17
University of Miami, UNSPECIFIED
ISSN:0006-8314 (Print) 1573-1472 (Online)
Keywords:Air–sea interaction - Hurricane boundary layer - Roll vortices - Turbulent fluxes
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Entwicklung und Erprobung von Verfahren zur Gewässerfernerkundung (old)
Location: Berlin-Adlershof , Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Marine Remote Sensing
Deposited By: Bärbel Bolowski
Deposited On:27 Jun 2008
Last Modified:15 Jan 2010 01:59

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