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RISSpectral Transformation Using a Cubed-Sphere Grid for a Three-Dimensional Variational Data Assimilation System
Publisher: American Meteorological Society
Abstract: tmospheric numerical models using the spectral element method with cubed-sphere grids (CSGs) are highly scalable in terms of parallelization. However, there are no data assimilation systems for spectral element numerical ...
Tropical Cyclone Initialization with a Spherical High-Order Filter and an Idealized Three-Dimensional Bogus Vortex
Publisher: American Meteorological Society
Abstract: A tropical cyclone initialization method with an idealized three-dimensional bogus vortex of an analytic empirical formula is presented for the track and intensity prediction. The procedure in the new method consists of ...
Characteristics of a Spectral Inverse of the Laplacian Using Spherical Harmonic Functions on a Cubed-Sphere Grid for Background Error Covariance Modeling
Publisher: American Meteorological Society
Abstract: n this study, a spectral inverse method using spherical harmonic functions (SHFs) represented on a cubed-sphere grid (SHF inverse) is proposed. The purpose of the spectral inverse method studied is to help with data ...
A Local Unscented Transform Kalman Filter for Nonlinear Systems
Publisher: American Meteorological Society
Evaluation of Storm Structure from the Operational HWRF during 2012 Implementation
Publisher: American Meteorological Society
Abstract: n this work, a high-resolution triple-nested implementation of the National Centers for Environmental Prediction (NCEP) operational Hurricane Weather Research and Forecasting Model (HWRF) for the 2012 hurricane season is ...
Assessment of Progress and Status of Data Assimilation in Numerical Weather Prediction
Publisher: American Meteorological Society
Impact of Assimilating Aircraft Reconnaissance Observations on Tropical Cyclone Initialization and Prediction Using Operational HWRF and GSI Ensemble–Variational Hybrid Data Assimilation
Publisher: American Meteorological Society
Abstract: AbstractThis study evaluates the impact of assimilating high-resolution, inner-core reconnaissance observations on tropical cyclone initialization and prediction in the 2013 version of the operational Hurricane Weather ...