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Dynamic Initialization Using Observations from a Hypothetical Network of Profilers
Publisher: American Meteorological Society
Abstract: This paper presents results from a series of observing system simulation experiments (OSSEs), designed to test a dynamic initialization procedure for continuous assimilation of observations from a hypothetical network of ...
Assimilation of Precipitable Water Measurements into a Mesoscale Numerical Model
Publisher: American Meteorological Society
Abstract: Significant progress has been made over the past decade in the development of remote-sensing instruments to profile wind and temperature. However, the current technology of profiling water vapor remotely is still far from ...
A Case of Rapid Continental Mesoscale Cyclogenesis. Part II: Model and Observational Diagnosis
Publisher: American Meteorological Society
Abstract: The rapid surface cyclogenesis of March 1984 is examined from an observational and modeling perspective, in terms of both potential vorticity (PV) and traditional quasigeostraphic reasoning, during its evolution from a ...
Variational Assimilation of Slant-Path Wet Delay Measurements from a Hypothetical Ground-Based GPS Network. Part I: Comparison with Precipitable Water Assimilation
Publisher: American Meteorological Society
Abstract: With the recent advance in Global Positioning System (GPS) atmospheric sensing technology, slant wet delay along each ray path can be measured with a few millimeters accuracy. In this study, the impact of slant wet delay ...
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 ...
A Vortex Relocation Scheme for Tropical Cyclone Initialization in Advanced Research WRF
Publisher: American Meteorological Society
Abstract: This paper introduces a relocation scheme for tropical cyclone (TC) initialization in the Advanced Research Weather Research and Forecasting (ARW-WRF) model and demonstrates its application to 70 forecasts of Typhoons ...
Application of WRF 3DVAR to Operational Typhoon Prediction in Taiwan: Impact of Outer Loop and Partial Cycling Approaches
Publisher: American Meteorological Society
Abstract: n this paper, the impact of outer loop and partial cycling with the Weather Research and Forecasting Model?s (WRF) three-dimensional variational data assimilation system (3DVAR) is evaluated by analyzing 78 forecasts for ...
The Weather Research and Forecasting Model's Community Variational/Ensemble Data Assimilation System: WRFDA
Publisher: American Meteorological Society
Abstract: milation is the process by which observations are combined with short-range NWP model output to produce an analysis of the state of the atmosphere at a specified time. Since its inception in the late 1990s, the multiagency ...