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RISThe National Meteorological Center Regional Analysis System
Publisher: American Meteorological Society
Abstract: The National Meteorological Center (NMC) Regional Optimum-Interpolation (ROI) analysis is described. The ROI is the analysis component of the Regional Analysis and Forecast System (RAFS) and is specially designed to provide ...
The Transformation of Tropical Storm Agnes into an Extratropical Cyclone. Part I: The Observed Fields and Vertical Motion Computations
Publisher: American Meteorological Society
Abstract: This is the first of two papers dealing with the transformation of tropical storm Agnes (June 1972) into an extratropical cyclone. Synoptic analyses and vertical motion patterns are used to describe the behavior of Agnes ...
The Transformation of Tropical Storm Agnes into an Extratropical Cyclone. Part II: Moisture, Vorticity and Kinetic Energy Budgets
Publisher: American Meteorological Society
Abstract: Moisture, vorticity and kinetic energy budgets are constructed to diagnose the transformation of tropical storm Agnes (June 1972) into an extratropical cyclone in this second of two papers on Agnes. The vertical motions ...
An Examination of the Frequency and Mean Conditions Surrounding Frontal Incursions into the Gulf of Mexico and Caribbean Sea
Publisher: American Meteorological Society
Abstract: Maps of mean monthly frequency and duration of frontal incursions into the Gulf of Mexico and Caribbean Sea are presented for the 1965?72 period. The transition from the low-frequency regime of summer to the high-frequency ...
Fine-Resolution 4DVAR Data Assimilation for the Great Plains Tornado Outbreak of 3 May 1999
Publisher: American Meteorological Society
Abstract: The National Centers for Environmental Prediction fine-resolution four-dimensional variational (4DVAR) data assimilation system is used to study the Great Plains tornado outbreak of 3 May 1999. It was found that the 4DVAR ...
Preliminary Experiments Using GALE Observations at the National Meteorological Center
Publisher: American Meteorological Society
Abstract: Analyses and forecasts for the first 2 weeks of the Genesis of Atlantic Lows Experiment (GALE) are described. These fields were produced using the National Meteorological Center (NMC) Regional Analysis and Forecast System ...
Changes to NMC's Regional Analysis and Forecast System
Publisher: American Meteorological Society
Abstract: The recent implementation of changes to the National Meteorological Center's (NMC's) Regional Analysis and Forecast System (RAFS) is described. The changes include an expansion of the innermost grids of the nested-grid ...
Changes to NMC's Regional Analysis and Forecast System
Publisher: American Meteorological Society
Abstract: The final set of changes to NMC's Regional Analysis and Forecast System (RAFS) is described. The changes include modifications to both the forecast model and the analysis model, as well as development of a Regional Data ...
Changes to the Operational “Early” Eta Analysis/Forecast System at the National Centers for Environmental Prediction
Publisher: American Meteorological Society
Abstract: This note describes changes that have been made to the National Centers for Environmental Prediction (NCEP) operational ?early? eta model. The changes are 1) an decrease in horizontal grid spacing from 80 to 48 km, 2) ...