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RISDevelopment of a Hybrid Ensemble–Variational Data Assimilation System over the Western Maritime Continent
Publisher: American Meteorological Society
Development of a Hybrid Ensemble–Variational Data Assimilation System over the Western Maritime Continent
Publisher: American Meteorological Society
A Hybrid ETKF–3DVAR Data Assimilation Scheme for the WRF Model. Part I: Observing System Simulation Experiment
Publisher: American Meteorological Society
Abstract: A hybrid ensemble transform Kalman filter?three-dimensional variational data assimilation (ETKF?3DVAR) system for the Weather Research and Forecasting (WRF) Model is introduced. The system is based on the existing WRF ...
A Hybrid ETKF–3DVAR Data Assimilation Scheme for the WRF Model. Part II: Real Observation Experiments
Publisher: American Meteorological Society
Abstract: The hybrid ensemble transform Kalman filter?three-dimensional variational data assimilation (ETKF?3DVAR) system developed for the Weather Research and Forecasting (WRF) Model was further tested with real observations, as ...
An Examination of WRF 3DVAR Radar Data Assimilation on Its Capability in Retrieving Unobserved Variables and Forecasting Precipitation through Observing System Simulation Experiments
Publisher: American Meteorological Society
Abstract: The purpose of this study is to investigate the performance of 3DVAR radar data assimilation in terms of the retrievals of convective fields and their impact on subsequent quantitative precipitation forecasts (QPFs). An ...
An Approach of Radar Reflectivity Data Assimilation and Its Assessment with the Inland QPF of Typhoon Rusa (2002) at Landfall
Publisher: American Meteorological Society
Abstract: A radar reflectivity data assimilation scheme was developed within the fifth-generation Pennsylvania State University?National Center for Atmospheric Research Mesoscale Model (MM5) three-dimensional variational data ...
Incremental Analysis Updates Initialization Technique Applied to 10-km MM5 and MM5 3DVAR
Publisher: American Meteorological Society
Abstract: An incremental analysis updates (IAU) technique is implemented for 3-h updates of the fifth-generation Pennsylvania State University?NCAR Mesoscale Model (MM5) three-dimensional variational data assimilation (3DVAR) and ...
Assimilation of Doppler Radar Observations with a Regional 3DVAR System: Impact of Doppler Velocities on Forecasts of a Heavy Rainfall Case
Publisher: American Meteorological Society
Abstract: In this paper, the impact of Doppler radar radial velocity on the prediction of a heavy rainfall event is examined. The three-dimensional variational data assimilation (3DVAR) system for use with the fifth-generation ...
Efficient Ensemble Covariance Localization in Variational Data Assimilation
Publisher: American Meteorological Society
Abstract: Previous descriptions of how localized ensemble covariances can be incorporated into variational (VAR) data assimilation (DA) schemes provide few clues as to how this might be done in an efficient way. This article serves ...
IMDAA: High-Resolution Satellite-Era Reanalysis for the Indian Monsoon Region
Publisher: American Meteorological Society