Community GSI version 3.7 and EnKF Version 1.3

November 8, 2018

The Developmental Testbed Center (DTC) is pleased to announce the release of the 2018 Community Gridpoint Statistical Interpolation (GSI) Version 3.7 and Ensemble Kalman Filter (EnKF) version 1.3 data assimilation system. This release includes the latest code as of October 30th of 2018, new compiling system, and updated run scripts with updated User's Guide and on-line tutorials. 

Some of the major upgrades for this release include: 

  • Unified CMake based build system.
  • WRF I/O interface now included as a library. No need to build WRF before compiling GSI/EnKF.
  • All community running scripts, namelists are now located under the ./ush directory. Previous ./dtc directory is removed.
  • Updated CRTM library and coefficients to version 2.3.0
  • Added capability to read NEMSIO ensemble files in parallel
  • A GSI docker container is available for community users to get hands-on experiences on building/running GSI/EnKF.  

Users may go to  GSI User's Page and EnKF User's Page  to download the release package, documentation, and practical cases. Questions and inquiries can be addressed through the GSI Helpdesk and EnKF Helpdesk.

GSI and EnKF are community data assimilation systems, open to contributions from both the operational and research communities. Please contact the helpdesk for access to the development code repository and check code contributions page  for the code transition procedures. Potential financial support to prospective contributors for code transitioning is also available through the DTC visitor program.

HWRFv4.0a Release

November 5, 2018

The DTC Hurricane team is pleased to announce the release of version 4.0a of the community HWRF modeling system. The release includes all components of the system: scripts, data preprocessing, vortex initialization, data assimilation, atmospheric and ocean models, coupler, postprocessor, and vortex tracker. Both the Scientific Documentation and the Users Guide have been updated.

Users may go to http://www.dtcenter.org/HurrWRF/users to download codes, acquire datasets, and get information and documentation about HWRF.

The upgrades in version 4.0a are listed below:

  • Compatible with the 2018 operational HWRF.
  • WRF upgraded to v4.0, updated GSI
  • Horizontal resolution increased from 18/6/2 km to 13.5/4.5/1.5 km
  • D02 and D03 domain size decreased to ~ 17.8 x 17.8 degrees and ~ 5.9 x 5.9 degrees, respectively.
  • Number of vertical levels increased to 75 with a model top of 10 hPa for all ocean basins.
  • Miscellaneous upgrades and bug fixes in various physical parameterizations.
    • New cloud overlap method in RRTMG radiation parameterization.
    • Updated horizontal diffusion and convergence damping coefficients.
  • Ocean upgrades
    • New POM domain for the north Central Pacific basin
  • Initialization upgrades
    • Dropsonde drifting is considered when assimilation is done
    • Assimilating new data sets with GSI (GOES-16 AMV, NOAA-20, SFMR, TDR from G-IV)
  • Addition of precipitation rate (PRATE) variable in GRIB2 files

For questions and inquires, contact hwrf-help@ucar.edu.

The DTC would like to encourage prospective contributors to apply to the DTC visitor program for transitioning research to the operational HWRF system. Proposals are accepted year-around. Please check the visitor program webpage (https://www.dtcenter.org/visitors/) for the latest announcement of opportunity and application procedure.

METplus 2.0 with MET 8.0 and METviewer 2.8 components

October 3, 2018

The Model Evaluation Tools (MET) development team at the DTC is pleased to announce the release of a multi-component verification capability called METplus.  It includes METplus version 2.0, MET version 8.0 and METviewer version 2.8. METplus is a suite of Python wrappers and ancillary scripts to enhance the user's ability to quickly set-up and run MET.  METviewer is a database and display system for aggregating and plotting MET output.  In the future, a user will be able to check everything out through the METplus GitHub repository.  Until then, the components will need to be downloaded separately.

METplus 2.0 may be obtained on GitHub

  • A User’s Guide and Sample Data are also available on the release page. 
  • Major Enhancements: Standardization of .conf file setting. 
  • Current supported use cases and examples: Cyclone Plotter, Feature Relative, Grid-to-Grid, Grid-to-Obs, QPF, and Track_and_Intensity

MET 8.0 is available for download from the MET Users web page and available in a Docker container with set-up instructions in README.docker.txt

  • A User’s Guide and Sample data are available online. 
  • Major Enhancements: Python embedding, observation error logic, shapefiles for masking regions, point observation format overhaul, and rotated lat/lon projections
  • New Tools: Three new utilities to dump shapefile information (gis_dump_dbf, gis_dump_shp, and gis_dump_shx)
  • Full details on the changes for this new version are detailed in the release notes.
  • The  DTC staff is working on updating the MET online tutorial.  For now, please refer to the METv6.1 Online Tutorial for help with getting started.

METviewer 2.8 may be obtained on GitHub and available in a Docker container with set-up instructions in README.docker.txt

  • Documentation may be found online.
  • Major Enhancements: Support for MET 8.0 output
  • Current Plot Templates: Time Series, Box Plot, Bar Plot, Receiver Operator Curve (ROC), Reliability Diagram, Binned Ensemble Spread-Skill, Performance Diagram, Taylor Diagram, Histogram, Economic Cost-Loss Value, 2D Contour Plots of statistics, and Scorecard.
  • Full details on the changes for this new version are detailed in the release notes.

Support for US-based HPCs

Over the next week, METplus 2.0 and MET 8.0 will be installed on several US-based high performance computing platforms (e.g. Cheyenne, Jet, Theia and WCOSS) to make it more accessible to both the research and operations community.  METviewer is intended to be installed on your local server.  Information about the paths, modules to load, and the LD_LIBRARY_PATH needed to run these installs are available online. You can just symbolically link to the bin directory and copy over the necessary config files to your working directory.

GMTB public release of CCPP v2.0

August 30, 2018

The DTC’s Global Model Test Bed (GMTB) is pleased to announce the public release of the Common Community Physics Package (CCPP) v2.0, containing a library of physical parameterizations (CCPP-Physics), and the framework that connects it to host models (CCPP-Framework). In this release, the CCPP has been bundled with the GMTB Single Column Model (SCM) v2.1, and contains updated physical parameterizations of the GFS suite plus the GFDL microphysics scheme.

The CCPP has also been integrated with the experimental version of NCEPs’ Global Forecast System (GFS) that employs the Finite-Volume in the Cubed-Sphere dynamical core (FV3). This capability is under review and is not supported as part of the public release. Interested developers should contact GMTB for access.

For more information, and to learn how to download, build, run, and contribute to the code, please visit the CCPP release page at https://dtcenter.org/gmtb/users/ccpp. Questions and comments can be directed to gmtb-help@ucar.edu.
 

Release of the Community Standalone GFDL Vortex Tracker Code Version 3.9a

April 13, 2018

The DTC’s HWRF team is pleased to announce the public release of the Community standalone GFDL Vortex Tracker code version 3.9a. The standalone tracker can be used to determine properties (location, intensity, structure etc) of forecast tropical cyclones of any numerical model, as long as selected variables are provided in GRIB or NetCDF format in a lat/lon grid. This version is in line with the 2017 operational implementation of HWRF. This code also has also been upgraded for cyclone genesis tracking.

Code downloads, test datasets, and a users' guide can be obtained from http://www.dtcenter.org/HurrWRF/users/downloads/index.tracker.php. Please refer to Known Issues and Fixes if you encounter any issues.

Questions and comments can be directed to hwrf-help@ucar.edu.

Release of the Common Community Physics Package (CCPP)

April 9, 2018

The DTC’s Global Model Test Bed (GMTB) is pleased to announce the public release of the Common Community Physics Package (CCPP), a library of physical parameterizations for atmospheric numerical models. It is distributed with a framework that enables its use with any host application for which an interface is written. In this release, the CCPP has been bundled with the GMTB Single Column Model (SCM) and contains all the physical parameterizations used in the current operational NOAA Global Forecast System (GFS).

For more information, and to learn how to download, build, run, and contribute to the code, please visit the CCPP release page at https://dtcenter.org/gmtb/users/ccpp/. Questions and comments can be directed to gmtb-help@ucar.edu.


The CCPP within the system architecture planned for NOAA's Next Generation Global Prediction System

Release of The MET Version 6.1 Verification Package

December 5, 2017

The MET development team at the DTC is pleased to announce the release of the MET version 6.1 verification package. It is available for download from the MET Users web page. The MET development team significantly enhanced the run-time performance of a number of tools, enhanced the data and file format capabilities, and added new capabilities for point observations, gridded analyses and tropical cyclone and probabilistic verification. Full details about the changes for this new version can be found in the release notes.

Executables for MET v6.1 are available on several high performance computing platforms (Yellowstone, Jet, Theia and WCOSS).  Paths, modules to load and the paths needed for these installs can be found at the bottom of the MET downloads page.  You simply need to symbolically link to the bin directory and copy the necessary config files to your working directory to use the available executables.

We hope that MET v6.1 enhances your model verification efforts. Please send any comments or questions to met_help@ucar.edu.

Release v3.9a of the HWRF system

October 17, 2017

The Developmental Testbed Center (DTC) is pleased to announce the release of version 3.9a of the community HWRF modeling system. The release includes all components of the system: scripts, data preprocessing, vortex initialization, data assimilation, atmospheric and ocean models, coupler, postprocessor, and vortex tracker. Both the Scientific Documentation and the Users Guide have been updated.

Users may go to http://www.dtcenter.org/HurrWRF/users to download codes, acquire datasets, and get information and documentation about HWRF.

The upgrades in version 3.9a are listed below:

  • Compatible with the 2017 operational HWRF.

  • WRF upgraded to v3.9.1 and GSI to v3.6.

  • D02 and D03 domain size decreased to ~ 24x24 degrees and ~ 7x7 degrees respectively.

  • Number of vertical levels increased to 75 with a model top of 10 hPa for the AL, EP, and CP basins and to 61 with a model top of 10 hPa for the WP basin and NIO.

  • Miscellaneous upgrades and bug fixes in various physical parameterizations.

    • Updated Scale Aware Simplified Arakawa Shubert scheme for cumulus parameterization.

    • Updated GFS Hybrid-Eddy Diffusivity Mass Flux PBL scheme.

    • Updated Ferrier-Aligo microphysics scheme.

    • Updated momentum and enthalpy exchange coefficients (Cd/Ch) in surface layer parameterization.

    • Updated partial cloudiness scheme for RRTMG.

  • Ocean upgrades

    • Reduced coupling time step from 9 min to 6 min for ocean coupling.

    • Increased vortex tracking frequency.

    • Number of vertical levels in MPIPOM-TC increased from 24 to 41.

  • Initialization upgrades

    • Use of a new composite storm vortex for improved vortex initialization.

    • Assimilating new data sets with GSI (hourly Atmospheric Motion Vectors /AMV/, clear-water-vapor AMV's).

  • New version of GFDL vortex tracker

For questions and inquires, contact hwrf-help@ucar.edu.

The DTC would like to encourage prospective contributors to apply to the DTC visitor program for transitioning research to the operational HWRF system. Proposals are accepted year-around. Please check the visitor program webpage (https://www.dtcenter.org/visitors/) for the latest announcement of opportunity and application procedure.

Release of GSI Version 3.6 and EnKF Version 1.2

Autumn 2017

The Developmental Testbed Center (DTC) is pleased to announce the release of the following community data assimilation systems:

Version 3.6 of the Community Gridpoint Statistical Interpolation (GSI) data assimilation system
Version 1.2 of the Community Ensemble Kalman Filter (EnKF) data assimilation system

The released packages for GSI and EnKF and the documentation for each can be accessed through each system website as follows:

GSI user’s page
EnKF user’s page

Please send questions and inquiries to the help desk emails: gsi-help@ucar.edu and enkf-help@ucar.edu.

GSI and EnKF are community data assimilation systems, open to contributions from both the operational and research communities. Please contact the helpdesk for assistance on gaining access to the development code repository and learning about code commit procedures.

Prospective contributors can also apply to the DTC visitor program for their data assimilation research and code transition. The visitor program is open to applications year-round. Please check the visitor program webpage (https://www.dtcenter.org/visitors/) for the latest announcement of opportunity and application procedures.

The DTC is a distributed facility, with a goal of bridging the research and operational communities. This code release is sponsored by the National Oceanic and Atmospheric Administration (NOAA) and the National Center for Atmospheric Research (NCAR). NCAR is supported by the National Science Foundation (NSF).

 

Release of the MET version 6.0 Verification Package

Summer 2017

The MET development team at the DTC is pleased to announce the release of the MET version 6.0 verification package. It is available for download from the MET Users web page. The MET development team significantly enhanced the run-time performance of a number of tools, enhanced the data and file format capabilities, and added new capabilities for point observations, gridded analyses and tropical cyclone and probabilistic verification. Full details about the changes for this new version can be found in the release notes.

Executables for MET v6.0 are available on several high performance computing platforms (Yellowstone, Jet, Theia and WCOSS).  Paths, modules to load and the paths needed for these installs can be found at the bottom of the MET downloads page.  You simply need to symbolically link to the bin directory and copy the necessary config files to your working directory to use the available executables.

We hope that MET v6.0 enhances your model verification efforts. Please send any comments or questions to met_help@ucar.edu.