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RISStability of an Iterative Dual-Doppler Wind Synthesis in Cartesian Coordinates
Publisher: American Meteorological Society
Abstract: A popular method for obtaining a wind field that satisfies mass continuity and that is consistent with dual-Doppler radial velocity observations is the iterative wind synthesis in Cartesian coordinates. However, in some ...
A Multicase Comparative Assessment of the Ensemble Kalman Filter for Assimilation of Radar Observations. Part II: Short-Range Ensemble Forecasts
Publisher: American Meteorological Society
Abstract: The quality of convective-scale ensemble forecasts, initialized from analysis ensembles obtained through the assimilation of radar observations using an ensemble Kalman filter (EnKF), is investigated for cases whose behaviors ...
A Multicase Comparative Assessment of the Ensemble Kalman Filter for Assimilation of Radar Observations. Part I: Storm-Scale Analyses
Publisher: American Meteorological Society
Abstract: The effectiveness of the ensemble Kalman filter (EnKF) for assimilating radar observations at convective scales is investigated for cases whose behaviors span supercellular, linear, and multicellular organization. The ...
The Arcadia, Oklahoma, Storm of 17 May 1981: Analysis of a Supercell during Tornadogenesis
Publisher: American Meteorological Society
Abstract: On 17 May 1981, an extensive dataset was collected for a supercell thunderstorm that produced an F2 tornado near Arcadia in central Oklahoma. Coordinated dual-Doppler scans of the storm by 10-cm research radars were collected ...
Additive Noise for Storm-Scale Ensemble Data Assimilation
Publisher: American Meteorological Society
Abstract: An ?additive noise? method for initializing ensemble forecasts of convective storms and maintaining ensemble spread during data assimilation is developed and tested for a simplified numerical cloud model (no radiation, ...
The 8 June 1995 McLean, Texas, Storm. Part II: Cyclic Tornado Formation, Maintenance, and Dissipation
Publisher: American Meteorological Society
Abstract: On 8 June 1995, scientists participating in the Verification of the Origins of Rotation in Tornadoes Experiment (VORTEX) collected a unique dataset with the Electra Doppler Radar (ELDORA). The ELDORA observations document ...
The 8 June 1995 McLean, Texas, Storm. Part I: Observations of Cyclic Tornadogenesis
Publisher: American Meteorological Society
Abstract: On 8 June 1995 scientists participating in the Verification of the Origins of Rotation in Tornadoes Experiment (VORTEX) collected airborne Doppler radar data in a storm that produced a family of tornadoes near McLean, ...
Airborne Doppler Radar Analysis of Supercells during COPS-91
Publisher: American Meteorological Society
Abstract: On 26 May 1991, NOAA P-3 airborne Doppler radar data were collected near two tornadic supercells in the southern Plains during the Cooperative Oklahoma Profiler Studies (COPS-91) field program. The 3-cm radar mounted in ...
Simulated WSR-88D Velocity and Reflectivity Signatures of Numerically Modeled Tornadoes
Publisher: American Meteorological Society
Abstract: Low-altitude radar reflectivity measurements of tornadoes sometimes reveal a donut-shaped signature (low-reflectivity eye surrounded by a high-reflectivity annulus) and at other times reveal a high-reflectivity knob ...
Using Precipitation Observations in a Mesoscale Short-Range Ensemble Analysis and Forecasting System
Publisher: American Meteorological Society
Abstract: A simple method to assimilate precipitation data from a synthesis of radar and gauge data is developed to operate alongside an ensemble Kalman filter that assimilates hourly surface observations. The mesoscale ensemble ...