Journal ArticleDOI
Inner Core Structure of Hurricane Alicia from Airborne Doppler Radar Observations
Frank D. Marks,Robert A. Houze +1 more
TLDR
In this paper, airborne Doppler radar measurements are used to determine the horizontal winds, vertical air motions, radar reflectivity and hydrometer fall speeds over much of the inner core region (within 40 km of the eye) of Hurricane Alicia (1983).Abstract:
Airborne Doppler radar measurements are used to determine the horizontal winds, vertical air motions, radar reflectivity and hydrometer fallspeeds over much of the inner-core region (within 40 km of the eye) of Hurricane Alicia (1983). The reconstructed flow field is more complete and detailed than any obtained previously. The data show both the primary (azimuthal) and secondary (radial-height) circulations. The primary circulation was characterized by an outward sloping maximum of tangential wind. The secondary circulation was characterized by a deep layer of radial inflow in the lower troposphere and a layer of intense outflow above 10 km altitude. The rising branch of the secondary circulation was located in the eyewall and sloped radially outward. Discrete convective-scale bubbles of more intense upward motion were superimposed on this mean rising current, and convective-scale downdrafts were located throughout and below the core of maximum precipitation in the eyewall. Precipitation particle...read more
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Journal ArticleDOI
Observed structure of mesoscale convective systems and implications for large-scale heating
TL;DR: In this paper, Houze's model for the idealized tropical mesoscale convective system proposed by Houze (1982) is examined and the model is used to determine the applicability of the conceptual model.
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Sensitivity of High-Resolution Simulations of Hurricane Bob (1991) to Planetary Boundary Layer Parameterizations
Scott A. Braun,Wei-Kuo Tao +1 more
TL;DR: In this paper, the MM5 mesoscale model is used to simulate Hurricane Bob (1991) using grids nested to high resolution (4 km). Tests are conducted to determine the sensitivity of the simulation to the available planetary boundary layer parameterizations, including the bulk-aerodynamic, Blackadar, Medium-RanGe Forecast (MRF) model, and Burk-Thompson boundary-layer schemes.
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GPS Dropwindsonde Wind Profiles in Hurricanes and Their Operational Implications
TL;DR: The recent development of the GPS drop-windsonde has allowed the wind and thermodynamic structure of the hurricane eyewall to be documented with unprecedented accuracy and resolution as mentioned in this paper.
Journal ArticleDOI
Precipitation Distribution in Tropical Cyclones Using the Tropical Rainfall Measuring Mission (TRMM) Microwave Imager: A Global Perspective
TL;DR: In this article, the authors quantify the spatial distribution of rainfall in tropical cyclones (TCs) over the global oceans using TRMM microwave imager rain estimates, and examine the relationship between the storm intensity, its geographical location, and the rainfall distribution, the dataset is stratified into three intensity groups and six oceanic basins.
Journal ArticleDOI
A Multiscale Numerical Study of Hurricane Andrew (1992). Part I: Explicit Simulation and Verification
Yubao Liu,Da-Lin Zhang,M. K. Yau +2 more
TL;DR: In this paper, the inner core structures of Hurricane Andrew (1992) are explicitly simulated using an improved version of the Penn State-NCAR nonhydrostatic, two-way interactive, movable, triply nested grid mesoscale model (MM5).