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RISThe Effect of Radial Velocity Gridding Artifacts on Variationally Retrieved Vertical Velocities
Publisher: American Meteorological Society
Abstract: This article investigates the source and impact of artifacts produced by ordered linear interpolation techniques on variationally retrieved updraft intensities. Qualitative reasoning for the generation of periodic perturbations ...
Radar Data Assimilation in the Canadian High-Resolution Ensemble Kalman Filter System: Performance and Verification with Real Summer Cases
Publisher: American Meteorological Society
Abstract: n 80-member high-resolution ensemble Kalman filter (HREnKF) is implemented for assimilating radar observations with the Canadian Meteorological Center?s (CMC?s) Global Environmental Multiscale Limited-Area Model (GEM-LAM). ...
Short-Term Forecasting of a Midlatitude Convective Storm by the Assimilation of Single–Doppler Radar Observations
Publisher: American Meteorological Society
Abstract: The McGill University radar data assimilation system is used to initialize a convective storm at high resolution (1 km) from single?Doppler radar observations. In this study, the background term in the assimilation system ...
Examination of Situation-Dependent Background Error Covariances at the Convective Scale in the Context of the Ensemble Kalman Filter
Publisher: American Meteorological Society
Abstract: high-resolution ensemble Kalman filter (HREnKF) system at the convective scale has been developed based on the Canadian Meteorological Center's operational global ensemble Kalman filter (EnKF) system. This study focuses ...
A Three-Dimensional Variational Approach for Deriving the Thermodynamic Structure Using Doppler Wind Observations—An Application to a Subtropical Squall Line
Publisher: American Meteorological Society
Abstract: A newly designed retrieval scheme based on three-dimensional variational analysis is used to extract the thermodynamic field of a weather system from Doppler wind measurements. As compared with the traditional retrieval ...
Developing a Convective-Scale EnKF Data Assimilation System for the Canadian MEOPAR Project
Publisher: American Meteorological Society
Abstract: his study discusses the construction of a high-resolution ensemble Kalman filter system (the HREnKF) developed for the Marine Environmental Observation Prediction and Response (MEOPAR) network. The HREnKF runs at a horizontal ...
Sensitivity of Forecast Uncertainty to Different Microphysics Schemes within a Convection-Allowing Ensemble during SoWMEX-IOP8
Publisher: American Meteorological Society