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RISStudies on the Initialization and Simulation of a Mature Hurricane Using a Variational Bogus Data Assimilation Scheme
Publisher: American Meteorological Society
Abstract: A bogus data assimilation (BDA) scheme is presented and used to generate the initial structure of a tropical cyclone for hurricane prediction. It was tested on Hurricane Felix (1995) in the Atlantic Ocean during its mature ...
Multiple-Radar Data Assimilation and Short-Range Quantitative Precipitation Forecasting of a Squall Line Observed during IHOP_2002
Publisher: American Meteorological Society
Abstract: The impact of multiple?Doppler radar data assimilation on quantitative precipitation forecasting (QPF) is examined in this study. The newly developed Weather Research and Forecasting (WRF) model Advanced Research WRF (ARW) ...
An Ensemble-Based Four-Dimensional Variational Data Assimilation Scheme. Part III: Antarctic Applications with Advanced Research WRF Using Real Data
Publisher: American Meteorological Society
Abstract: four-dimensional ensemble-based variational data assimilation (4DEnVar) algorithm proposed in Part I of the 4DEnVar series (denoted En4DVar in Part I, but here we refer to it as 4DEnVar according to WMO conference ...
Evaluations of BDA Scheme Using the Advanced Research WRF (ARW) Model
Publisher: American Meteorological Society
Abstract: A tropical cyclone bogus data assimilation (BDA) scheme is built in the Weather Research and Forecasting three-dimensional variational data assimilation system (WRF 3D-VAR). Experiments were conducted (21 experiments with ...
The Roles of Vortex Rossby Waves in Hurricane Secondary Eyewall Formation
Publisher: American Meteorological Society
Abstract: A high-resolution, full-physics model initiated with an idealized tropical cyclone?like vortex is used to simulate and investigate the secondary eyewall formation. The beta skirt axisymmetrization (BSA) hypothesis previously ...
An Ensemble-Based Four-Dimensional Variational Data Assimilation Scheme. Part I: Technical Formulation and Preliminary Test
Publisher: American Meteorological Society
Abstract: Applying a flow-dependent background error covariance (? matrix) in variational data assimilation has been a topic of interest among researchers in recent years. In this paper, an ensemble-based four-dimensional variational ...
An Ensemble-Based Four-Dimensional Variational Data Assimilation Scheme. Part II: Observing System Simulation Experiments with Advanced Research WRF (ARW)
Publisher: American Meteorological Society
Abstract: An ensemble-based four-dimensional variational data assimilation (En4DVAR) algorithm and its performance in a low-dimension space with a one-dimensional shallow-water model have been presented in Part I. This algorithm ...
Initialization and Simulation of a Landfalling Hurricane Using a Variational Bogus Data Assimilation Scheme
Publisher: American Meteorological Society
Abstract: The bogus data assimilation (BDA) scheme designed by Zou and Xiao to specify initial structures of tropical cyclones was tested further on the simulation of a landfalling hurricane?Hurricane Fran (1996). The sensitivity ...
The Impact of Multisatellite Data on the Initialization and Simulation of Hurricane Lili’s (2002) Rapid Weakening Phase
Publisher: American Meteorological Society
Abstract: Numerical experiments have been conducted to examine the impact of multisatellite data on the initialization and forecast of the rapid weakening of Hurricane Lili (in 2002) from 0000 UTC to landfall in Louisiana on 1300 ...
A Numerical Study of the Effect of GOES Sounder Cloud-Cleared Brightness Temperatures on the Prediction of Hurricane Felix
Publisher: American Meteorological Society
Abstract: The influence of Geostationary Operational Environmental Satellite (GOES) brightness temperature data on the numerical simulations of Hurricane Felix is investigated. Satellite data are included as an augmentation to a ...