Hybrid Variational/Ensemble Data Assimilation for NCEP GFS
Hybrid Variational/Ensemble Data Assimilation combines features from the Ensemble Kalman Filter and Variational assimilation methods to improve the NCEP Global Forecast System. It incorporates ensemble perturbations into the variational cost function, leading to more accurate forecasts. The approach
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Understanding Near-Surface Sea Temperature Development in NCEP GFS/CFS
This informative piece delves into the evolution of Near-Surface Sea Temperature (NSST) within the NCEP GFS/CFS, discussing its significance in Numerical Weather Prediction (NWP) systems, the utilization of sea surface temperature (SST), and the T-profile near the sea surface. It covers the role of
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NCEP GEFS Sub-Seasonal Forecasting Exercise
In this exercise, you will generate NCEP GEFS deterministic week 1 and week 2 forecasts for precipitation and temperature anomaly. The practical steps include downloading the necessary data and scripts, extracting the files, and accessing the GEFS model guidance. This exercise focuses on understandi
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Advances in Global Data Assimilation at NOAA/NCEP: Radiance Data and Future Developments
Explore the utilization of radiance data in global data assimilation at NOAA/NCEP, focusing on the integration of various satellite instruments like AMSU-A, ATMS, MHS, and more. Recent and upcoming enhancements to the global data assimilation system are discussed, with an emphasis on changes to the
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Overview of 2014 NCEP Production Suite Review on Global Modeling
The 2014 NCEP Production Suite Review highlighted the significant implementation of the 13 km Global Forecast System (GFS). This major update involved substantial enhancements in resolution, observations, analysis, and physics, impacting various NCEP models and centers. The improved 13 km GFS brough
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NCEP Regional Ensembles Review Summary
Completed WCOSS transition of both SREF and NARRE-TL in production, with upgrades and fixes for improved ensemble forecasting. Delivered interim upgrade packages for SREF, planned future upgrades, and introduced an experimental NCEP Storm-Scale Ensemble. Performance evaluation in a heavy rain event
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African Monsoon Recent Evolution & Outlooks Update
The recent evolution of the African monsoon shows varied rainfall patterns in different regions over the past 7, 30, and 90 days. Highlights include below-average rainfall in parts of East and Central Africa, above-average rainfall in West Africa, and outlooks for increased or decreased rainfall in
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Advancements in Global Data Assimilation at NOAA/NCEP
Utilizing a range of radiance data sources, NOAA/NCEP has implemented significant upgrades to its Global Data Assimilation System. Recent and upcoming changes focus on improving model levels, introducing new observation errors, and expanding all-sky assimilation capabilities. The future direction in
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Managing and Updating R2 Source Codes and Data Documentation
Set the home directory to prevent future directory changes before running real-time processes. Two versions of run_gdas scripts are provided along with instructions for setting up directories, updating scripts, and accessing necessary data files. Various resources and tools are mentioned, including
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