14. Glossary


A forecast-model agnostic, vetted collection of codes containing atmospheric physical parameterizations and suites of parameterizations for use in Numerical Weather Prediction (NWP) along with a framework that connects the physics to the host forecast model.


The preprocessing software used to create initial and boundary condition files to “coldstart” the forecast model.


The Finite-Volume Cubed-Sphere dynamical core (dycore). Developed at NOAA’s Geophysical Fluid Dynamics Laboratory (GFDL), it is a scalable and flexible dycore capable of both hydrostatic and non-hydrostatic atmospheric simulations. It is the dycore used in the UFS Weather Model.


The second version of the World Meterological Organization’s (WMO) standard for distributing gridded data.


National Centers for Environmental Prediction, an arm of the National Weather Service, consisting of nine centers. More information can be found at https://www.ncep.noaa.gov.


The software libraries created and maintained by NCEP that are required for running chgres_cube, the UFS Weather Model, and UPP.


A collection of third-party libraries required to build NCEPLIBS, chgres_cube, the UFS Weather Model, and UPP.


An interpreted programming language designed specifically for scientific data analysis and visualization. More information can be found at https://www.ncl.ucar.edu.


The NOAA Environmental Modeling System is a common modeling framework whose purpose is to streamline components of operational modeling suites at NCEP.


A binary format for atmospheric model output from NCEP’s Global Forecast System (GFS).


The Unified Forecast System is a community-based, coupled comprehensive Earth modeling system consisting of several applications (apps). These apps span regional to global domains and sub-hourly to seasonal time scales. The UFS is designed to support the Weather Enterprise and to be the source system for NOAA’s operational numerical weather prediction applications. More information can be found at http://ufs-dev.rap.ucar.edu/index.html.


A collection of codes used by multiple UFS apps (e.g. the UFS Short-Range Weather App, the UFS Medium-Range Weather App). The grid, orography, surface climatology, and initial and boundary condition generation codes used by the UFS Short-Range Weather App are all part of this collection.


The Unified Post Processor is software developed at NCEP and used operationally to post-process raw output from a variety of NCEP’s NWP models, including the FV3.

Weather Model

A prognostic model that can be used for short- and medium-range research and operational forecasts. It can be an atmosphere-only model or an atmospheric model coupled with one or more additional components, such as a wave or ocean model.