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RISA Synoptic Evaluation of Normal Mode Initialization Experiments with the NMC Nested Grid Model
Publisher: American Meteorological Society
Abstract: The Regional Analysis and Forecast System at the National Meteorological Center consists of an optimum interpolation objective analysis scheme, an adiabatic nonlinear normal model initialization (NNMI) and a hemispheric ...
Spatial Resolution Impacts on National Meteorological Center Nested Grid Model Simulations
Publisher: American Meteorological Society
Abstract: Forecasts from different resolution versions of the National Meteorological Center Nested Grid Model (NGM) are compared for two case studies to assess an optimal ratio of model vertical and horizontal resolutions. Four ...
Global Forecast Error Correlation. Part 1: Isobaric Wind and Geopotential
Publisher: American Meteorological Society
Abstract: Results of a thorough study of the correlation structure of observation-minus-forecast increments for mandatory pressure level radiosonde observations of zonal and meridional wind components and geopotential, differenced ...
The Economic Value Of Ensemble-Based Weather Forecasts
Publisher: American Meteorological Society
Abstract: The potential economic benefit associated with the use of an ensemble of forecasts versus anequivalent or higher-resolution control forecast is discussed. Neither forecast systems are post-processed,except a simple calibration ...
A Synoptic Evaluation of the NCEP Ensemble
Publisher: American Meteorological Society
Abstract: Ensemble forecasting has been operational at NCEP (formerly the National Meteorological Center) since December 1992. In March 1994, more ensemble forecast members were added. In the new configuration, 17 forecasts with the ...
Untitled
Publisher: American Meteorological Society
Abstract: AbstractA new version of the Global Ensemble Forecast System (GEFS, v11) is tested and compared with the operational version (v10) in a 2-yr parallel run. The breeding-based scheme with ensemble transformation and rescaling ...
Systematic Error Analysis and Calibration of 2-m Temperature for the NCEP GEFS Reforecast of the Subseasonal Experiment (SubX) Project
Publisher: American Meteorological Society
Abstract: AbstractThe National Centers for Environmental Prediction have generated an 18-yr (1999?2016) subseasonal (weeks 3 and 4) reforecast to support the Climate Prediction Center?s operational mission. To create this reforecast, ...
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 ...