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RISDescription of the NMC Global Data Assimilation and Forecast System
Publisher: American Meteorological Society
Abstract: The National Meteorological Center's (NMC) Global Data Assimilation and Forecast System is described in some detail. The system consists of 1) preprocessing of the initial guess, 2) optimum interpolation objective analysis, ...
Systematic Tendency Error in Budget Calculations
Publisher: American Meteorological Society
Abstract: Atmospheric budget calculations suffer from various observational and numerical errors. This paper demonstrates that all budget calculations applied to a large number of samples suffer from additional errors originating ...
Dynamical Downscaling of Global Analysis and Simulation over the Northern Hemisphere
Publisher: American Meteorological Society
Abstract: As an extreme demonstration of regional climate model capability, a dynamical downscaling of the NCEP?NCAR reanalysis was successfully performed over the Northern Hemisphere. Its success is due to the use of the scale-selective ...
Model Diagnosis of Nighttime Minimum Temperature Warming during Summer due to Irrigation in the California Central Valley
Publisher: American Meteorological Society
Abstract: This study examines the mechanisms of nighttime minimum temperature warming in the California Central Valley during summer due to irrigation. The Scripps Experimental Climate Prediction Center (ECPC) Regional Spectral Model ...
Time Schemes for Strongly Nonlinear Damping Equations
Publisher: American Meteorological Society
Abstract: In atmospheric models that include vertical diffusion and surface fluxes of heat and moisture it is common to observe large amplitude ?fibrillations? associated with these noniinear damping terms. In this paper this ...
Anomaly Nesting: A Methodology to Downscale Seasonal Climate Simulations from AGCMs
Publisher: American Meteorological Society
Abstract: In this paper a methodology is proposed to downscale coarse-resolution atmospheric general circulation model (AGCM) seasonal simulations. Anomaly nesting involves replacing the climatology of the driving AGCM with observed ...
Cluster Analysis of the Seasonal Forecast Skill of the NCEP SFM over the Pacific–North America Sector
Publisher: American Meteorological Society
Abstract: Cluster analysis was used to study seasonal forecast skills of the winter season NCEP seasonal forecast model (SFM) hindcasts over the Pacific?North America (PNA) sector. Two skill scores based on cluster mean and ensemble ...
Fifty-Seven-Year California Reanalysis Downscaling at 10 km (CaRD10). Part II: Comparison with North American Regional Reanalysis
Publisher: American Meteorological Society
Abstract: The California Reanalysis Downscaling at 10 km (CaRD10) was compared with the North American Regional Reanalysis (NARR), which is a data assimilation regional analysis at 32-km resolution and 3-hourly output using the Eta ...
Dynamical Global Downscaling of Global Reanalysis
Publisher: American Meteorological Society
Abstract: With the aim of producing higher-resolution global reanalysis datasets from coarse-resolution reanalysis, a global version of the dynamical downscaling using a global spectral model is developed. A variant of spectral ...
Fifty-Seven-Year California Reanalysis Downscaling at 10 km (CaRD10). Part I: System Detail and Validation with Observations
Publisher: American Meteorological Society
Abstract: For the purpose of producing datasets for regional-scale climate change research and application, the NCEP?NCAR reanalysis for the period 1948?2005 was dynamically downscaled to hourly, 10-km resolution over California ...