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RISWavenumber Analysis of Azimuthally Distributed Data: Assessing Maximum Allowable Gap Size
Publisher: American Meteorological Society
Abstract: erforming wavenumber decomposition on azimuthally distributed data such as those in tropical cyclones can be challenging when data gaps exist in the signal. In the literature, ad hoc approaches are found to determine maximum ...
Evaluation of the Hurricane Research Division Doppler Radar Analysis Software Using Synthetic Data
Publisher: American Meteorological Society
Abstract: he Hurricane Research Division Doppler radar analysis software provides three-dimensional analyses of the three wind components in tropical cyclones. Although this software has been used for over a decade, there has never ...
Environmental Flow Impacts on Tropical Cyclone Structure Diagnosed from Airborne Doppler Radar Composites
Publisher: American Meteorological Society
Abstract: ollowing a recent demonstration of multicase compositing of axisymmetric tropical cyclone (TC) structure derived from airborne Doppler radar measurements, the authors extend the analysis to the asymmetric structure using ...
Airborne Doppler Observations of the Inner-Core Structural Differences between Intensifying and Steady-State Tropical Cyclones
Publisher: American Meteorological Society
Abstract: ifferences in the inner-core structure of intensifying [IN; intensity increase of at least 20 kt (24 h)?1, where 1 kt = 0.51 m s?1] and steady-state [SS; intensity remaining between ±10 kt (24 h)?1] tropical cyclones (TCs) ...
Multiscale Analysis of Tropical Cyclone Kinematic Structure from Airborne Doppler Radar Composites
Publisher: American Meteorological Society
Abstract: he multiscale inner-core structure of mature tropical cyclones is presented via the use of composites of airborne Doppler radar analyses. The structure of the axisymmetric vortex and the convective and turbulent-scale ...
Estimation and Mapping of Hurricane Turbulent Energy Using Airborne Doppler Measurements
Publisher: American Meteorological Society
Abstract: Hurricane turbulent kinetic energy (TKE) was computed using airborne Doppler measurements from the NOAA WP-3D tail radars, and TKE data were retrieved for a variety of storms at different stages of their life cycle. The ...
An Observational Study of Hurricane Boundary Layer Small-Scale Coherent Structures
Publisher: American Meteorological Society
Abstract: Data with high temporal and spatial resolution from Hurricanes Isabel (2003) and Frances (2004) were analyzed to provide a detailed study of near-surface linear structures with subkilometer wavelengths of the hurricane ...
An Estimation of Turbulent Characteristics in the Low-Level Region of Intense Hurricanes Allen (1980) and Hugo (1989)
Publisher: American Meteorological Society
Abstract: his study analyzes the flight-level data collected by research aircraft that penetrated the eyewalls of category 5 Hurricane Hugo (1989) and category 4 Hurricane Allen (1980) between 1 km and the sea surface. Estimates of ...
The HWRF Hurricane Ensemble Data Assimilation System (HEDAS) for High-Resolution Data: The Impact of Airborne Doppler Radar Observations in an OSSE
Publisher: American Meteorological Society
Abstract: ithin the National Oceanic and Atmospheric Administration, the Hurricane Research Division of the Atlantic Oceanographic and Meteorological Laboratory has developed the Hurricane Weather Research and Forecasting (HWRF) ...
Assimilation of High-Resolution Tropical Cyclone Observations with an Ensemble Kalman Filter Using NOAA/AOML/HRD’s HEDAS: Evaluation of the 2008–11 Vortex-Scale Analyses
Publisher: American Meteorological Society
Abstract: he Hurricane Weather Research and Forecasting (HWRF) Ensemble Data Assimilation System (HEDAS) is developed to assimilate tropical cyclone inner-core observations for high-resolution vortex initialization. It is based on ...