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Unified Post Processor (UPP)

The Unified Post Processor (UPP) software package is a software package designed to generate useful products from raw model output.

The UPP is currently used in operations with the Global Forecast System (GFS), GFS Ensemble Forecast System (GEFS), North American Mesoscale (NAM), Rapid Refresh (RAP), High-Resolution Rapid Refresh (HRRR), Short Range Ensemble Forecast (SREF), and Hurricane WRF (HWRF) applications. It is also used in the Unified Forecast System (UFS), including the Rapid Refresh Forecast System (RRFS), Hurricane Analysis and Forecast System (HAFS), and the Medium-Range Weather (MRW) and Short- Range Weather (SRW) Applications.

The UPP provides the capability to compute a variety of diagnostic fields and interpolate to pressure levels or other vertical coordinates.

UPP also incorporates the Joint Center for Satellite Data Assimilation (JCSDA) Community Radiative Transfer Model (CRTM) to compute model-derived brightness temperature (TB) for various instruments and channels. This additional feature enables the generation of a number of simulated satellite products including GOES products.

Output from the UPP is in National Weather Service (NWS) and World Meteorological Organization (WMO) GRIB2 format and can be used directly by visualization, plotting, or verification packages or for further downstream post-processing, e.g., statistical post-processing techniques.

Examples of UPP products include:

  • T, Z, humidity, wind, cloud water, cloud ice, rain, and snow on pressure levels
  • SLP, shelter level T, humidity, and wind fields
  • Precipitation-related fields
  • PBL-related fields
  • Severe weather products (e.g. CAPE, Vorticity, Wind shear)
  • Radiative/Surface fluxes
  • Cloud related fields
  • Aviation products
  • Radar reflectivity products
  • Satellite look-alike products

User Support

Support for the UFS UPP is provided through GitHub Discussions.

Documentation

User Guide for latest standalone public release: https://upp.readthedocs.io/en/latest/.

Technical code-level documentation: https://noaa-emc.github.io/UPP/.

Developer Information

Please review the wiki

Authors

NCEP/EMC Developers

Code Managers: Wen Meng, Huiya Chuang, Fernando Andrade-Maldonado

Prerequisites

The UPP requires certain NCEPLIBS packages to be installed via the spack-stack project. For instructions on installing these packages as a bundle via spack-stack, see: https://spack-stack.readthedocs.io/en/latest/. The UPP/modulefiles directory indicates which package versions are used and supported on Level 1 systems.

Required NCEPLIBS packages:

Also required to build NCEPpost executable (cmake option BUILD_POSTEXEC):

The NCEPLIBS-wrf_io library is required to build with NCEPpost with WRF-IO library (cmake option BUILD_WITH_WRFIO).

The following third-party libraries are required:

Building

Builds include:

  • Inline post (UPP library): Currently only supported for the GFS, RRFS, HAFS, and the UFS-MRW Application.

  • Offline post (UPP executable): Supported for regional applications including SRW, RRFS, HAFS, and standalone applications of UPP.

CMake is used to manage all builds of the UPP. The script UPP/tests/compile_upp.sh can be used to automatically build UPP on fully supported platforms where HPC-stack is supported. Details in this script can be used to build on new platforms.

Disclaimer

The United States Department of Commerce (DOC) GitHub project code is provided on an "as is" basis and the user assumes responsibility for its use. DOC has relinquished control of the information and no longer has responsibility to protect the integrity, confidentiality, or availability of the information. Any claims against the Department of Commerce stemming from the use of its GitHub project will be governed by all applicable Federal law. Any reference to specific commercial products, processes, or services by service mark, trademark, manufacturer, or otherwise, does not constitute or imply their endorsement, recommendation or favoring by the Department of Commerce. The Department of Commerce seal and logo, or the seal and logo of a DOC bureau, shall not be used in any manner to imply endorsement of any commercial product or activity by DOC or the United States Government.

UPP Terms of Use Notice

The UPP Terms of Use Notice is available at: https://github.com/NOAA-EMC/UPP/wiki/UPP-Terms-of-Use-Notice

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