Environmental Modeling Center
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The Environmental Modeling Center (EMC) is a United States Government agency, which improves numerical weather, marine and climate predictions at the
National Centers for Environmental Prediction The United States National Centers for Environmental Prediction (NCEP) delivers national and global weather, water, climate and space weather guidance, forecasts, warnings and analyses to its Partners and External User Communities. These prod ...
(NCEP), through a broad program of research in
data assimilation Data assimilation is a mathematical discipline that seeks to optimally combine theory (usually in the form of a numerical model) with observations. There may be a number of different goals sought – for example, to determine the optimal state es ...
and modeling. In support of the NCEP operational forecasting mission, the EMC develops, improves and monitors data assimilation systems and models of the atmosphere, ocean and coupled system, using advanced methods developed internally as well as cooperatively with scientists from universities, NOAA laboratories and other government agencies, and the international scientific community.


History

In July 1954, the Joint Numerical Weather Prediction Unit (JNWPU) was created to test out
numerical weather prediction Numerical weather prediction (NWP) uses mathematical models of the atmosphere and oceans to predict the weather based on current weather conditions. Though first attempted in the 1920s, it was not until the advent of computer simulation in th ...
techniques by computer. Operational numerical weather prediction in the United States began in 1955 under the JNWPU. This unit co-located with the Weather Bureau-Air Force-Navy (WBAN) analysis center to form the National Weather Analysis Center, which was located in Suitland, Maryland. When the two units merged, the name changed to the National Meteorological Center (NMC) in January 1958. When the JNWPU dissolved in 1961, NMC became an independent organization from Global Weather Central and Fleet Numerical Weather Central. Research and computer processing abilities increased over the years, which allowed for the first global forecast model to run by June 1966.Hydrometeorological Prediction Center (2011-08-22)
A Brief History of the Hydrometeorological Prediction Center.
Retrieved on 2012-11-12.
NMC moved to the World Weather Building in Camp Springs, Maryland between 1974 and 1976. NMC changed its name to NCEP, the National Centers for Environmental Prediction on October 1, 1995, with the Environmental Modeling Center (EMC) becoming one of its subunits. EMC moved to the National Center for Weather and Climate Prediction building in September 2012.


Operations

The Environmental Modeling Center is responsible for the development, running, and maintenance of more than 20 numerical weather prediction systems comprising NCEP's operational production suite. These models include the Rapid Refresh (RAP), Global Forecast System (GFS), Global Ensemble Forecast System (GEFS), WaveWatch III, Short Range Ensemble Forecast (SREF), Climate Forecast System (CFS), Global Real-Time Ocean Forecast System (RTOFS), North American Mesoscale Model (NAM), Hurricane Weather Research and Forecasting model (HWRF), and Hurricanes in a Multi-scale Ocean-coupled Non-hydrostatic Model (HMON).


Branches

* Modeling and Data Assimilation Branch * Verification, Post-processing and Product Generation Branch * Engineering and Implementation Branch


See also

* National Hurricane Center *
Ocean Prediction Center The Ocean Prediction Center (OPC), established in 1995, is one of the National Centers for Environmental Prediction's (NCEP's) original six service centers. Until 2003, the name of the organization was the Marine Prediction Center.Ocean Predictio ...
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Space Weather Prediction Center The Space Weather Prediction Center (SWPC), named the Space Environment Center (SEC) until 2007, is a laboratory and service center of the US National Weather Service (NWS), part of the National Oceanic and Atmospheric Administration (NOAA), loc ...
*
Storm Prediction Center The Storm Prediction Center (SPC) is a US government agency that is part of the National Centers for Environmental Prediction (NCEP), operating under the control of the National Weather Service (NWS), which in turn is part of the National Oceani ...
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Tropical cyclone forecast model A tropical cyclone forecast model is a computer program that uses meteorological data to forecast aspects of the future state of tropical cyclones. There are three types of models: statistical, dynamical, or combined statistical-dynamic. Dyna ...
*
Weather Prediction Center The Weather Prediction Center (WPC), located in College Park, Maryland, is one of nine service centers under the umbrella of the National Centers for Environmental Prediction (NCEP), a part of the National Weather Service (NWS), which in turn is ...


References

{{Authority control Numerical climate and weather models National Centers for Environmental Prediction