News

Front Page: Community Modeling Workshop Outcome

DTC Article on NOAA Community Modeling Workshop and SIP Working Group meetings The NOAA Community Modeling Workshop and meetings of the Strategic Implementation Plan (SIP) Working Groups were held 18-20 April  2017 at the National Center for Weather and Climate Prediction in College Park, Maryland.  The goal of the meetings was to seek engagement with the Earth system science community to form and shape the nascent unified modeling community being built upon the Next Generation Global Prediction System (NGGPS), and to consider how to best execute shared infrastructure, support, management,…

Director's Corner: Bill Kuo

The Developmental Testbed Center (DTC) was established in 2003 with a mission to facilitate research to operation transitions in regional Numerical Weather Prediction (NWP). The DTC fulfills this mission by (i) providing community support for regional operational systems, (ii) performing testing and evaluation of NWP innovations for possible operational implementation, and (iii) promoting interaction and collaboration between research and operational NWP communities through special workshops, visitor programs, and the publication of this newsletter. When the DTC was first established, the…

Who's Who: Jamie Wolff

I grew up in Mound, MN, which is a western suburb of the Twin Cities. While most would consider Minnesota a cold and snowy state, I apparently wanted colder and snowier weather because I decided to head further north to Grand Forks, ND to attend the University of North Dakota (UND). I am an avid UND hockey fan and love heading to the games when they come out to play University of Denver or Colorado College in Colorado. Experiencing bitterly cold temperatures walking to class at UND certainly made me appreciate the amazing weather we have here in Colorado! I do have one lasting piece of home…

Bridges to Operations: The Unified Post Processor

Post-processing is an essential but often overlooked component of numerical weather prediction and encompasses a broad range of concepts, methods, and tools to make raw model output more useful. The Unified Post Processor (UPP) can compute a variety of diagnostic fields, interpolate to pressure levels or specified (pre-defined or custom) grids, and de-stagger grids. Examples of the products include: T, Z, humidity, wind, cloud water, cloud ice, rain, and snow on isobaric levels SLP, shelter level T, humidity, and wind fields Precipitation-related fields PBL-related fields Severe weather…

Visitors: Evaluating Convective Structure

As a visitor to DTC in 2016, University of North Dakota Ph.D. candidate Mariusz Starzec investigated the performance of regional summertime convective forecasts. In particular, he focused on model skill in predicting the coverage, morphology, and intensity of convection. Further emphasis was placed on how representative the simulated internal convective structure is of observed convection by using the reflectivity field as proxy for convective processes. Convection plays a major role in everyday weather and long term climate. Any biases present in convective forecasts have important…

Community Connections: NGGPS Atmospheric Physics Workshop

On 8-9 November 2016, more than 80 scientists from a broad cross-section of the physics development community gathered for the Next Generation Global Prediction System (NGGPS) Atmospheric Physics Workshop at the NOAA Center for Weather and Climate Prediction. The workshop provided an opportunity for the NGGPS Physics Team to revisit and refine its near- and long-term priorities for advancing the National Centers for Environmental Prediction (NCEP) global physics suite and identify key areas that need attention. Current plans are to deliver the advanced physics suite by October 2018.  Workshop…

Announcement: Release of the MET version 6.0 Verification Package

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…

Announcement: 2018 Hurricane WRF Tutorial

The DTC is pleased to announce that registration is now open for the 2018 Hurricane WRF (HWRF) tutorial to be held 23–25 January 2018 at the NOAA Center for Weather and Climate Prediction (NCWCP) in College Park, MD. Registration, a draft agenda, and information about hotel accommodations and other logistics can be found on our tutorial website: 2018 HWRF tutorial The HWRF tutorial will be a three-day event organized by the Developmental Testbed Center (DTC) and by the NOAA Environmental Modeling Center (EMC). The Hurricane Weather Research and Forecast system (HWRF) is a coupled atmosphere-…

Software Release: Release of GSI Version 3.6 and EnKF Version 1.2

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 pageEnKF 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…

Did you know?: Documentation is important!

A Google Search: Documentation is the Most Valuable Thing You Do (from cyborginstitute.org/projects/administration/documentation/). Good documentation makes software and tools more valuable and more durable, and although documentation can be a great expense, in the long term it’s almost always worthwhile. As part of its effort to set up a framework for a Common Community Physics Package (CCPP), the DTC’s Global Model Test Bed is documenting the Global Forecast System’s operational physics suite using “Doxygen” software. Doxygen is [a] tool for generating documentation from popular…

Front Page: Evaluation of New Cloud Verification Methods

The DTC has been tasked by the US Air Force to investigate new approaches to evaluate cloud forecast predictions. Accurate cloud forecasts are critical to the Air Force national intelligence mission because clouds can mask key targets, obscure sensors, and are a hazard to Remotely Piloted Aircraft. This work that will help forecast users and developers understand their  characteristics of these predictions, and suggest ways to make the predictionsm more accurate. Clouds have significant impacts on many kinds of decisions.  Among other applications, accurate cloud forecasts are critical to the…

Director's Corner: Michael Farrar

As the new Director of the Environmental Modeling Center (EMC), I have the pleasure of leading nearly two hundred world-class scientists, engineers and other staff in developing, transitioning, improving and maintaining a suite of global and regional environmental models to support the National Weather Service (NWS) mission of the protecting life and property for our country.  To meet the challenges of this mission, EMC has formed strategic partnerships with numerous community organizations over the years to collaboratively manage the existing suite of models, as well as to build the next…

Who's Who: Man Zhang

As a visiting scientist at the University of Maryland in 2005, Man Zhang learned of Colorado’s reputation of being a great place to live. When her husband had an opportunity to come to Colorado as a visiting Ph.D. student, they didn’t think twice about moving. They love Colorado and have been in the Boulder area for almost 10 years. Man was a post-doc at CIRA in the ensemble data assimilation group. She applied the hybrid variational-ensemble data assimilation system (HVEDAS) developed at CIRA to the NOAA operational Hurricane Weather Research and Forecasting (HWRF) modeling system to…

Bridges to Operations: The 2016 Hurricane WRF System

The community Hurricane Weather Research and Forecasting (HWRF) modeling system was upgraded to version 3.8a on November 21, 2016.  This release includes all components of the HWRF system: scripts, data preprocessing, vortex initialization, data assimilation, atmospheric and ocean models, coupler, postprocessor, and vortex tracker.  In addition to default operational features, the release includes capabilities to perform idealized tropical cyclone simulations run with alternate physics, and backwards compatibility for inner nest grid sizes. The HWRF community modeling system currently has…

Visitors: Cloud Overlap Influences on Tropical Cyclone Evolution

As visitors to the DTC in 2016, Michael Iacono and John Henderson of Atmospheric and Environmental Research (AER) used the Hurricane Weather Research and Forecasting model (HWRF) to investigate an improved way of representing the vertical overlap of partial cloudiness and showed that this process strongly influences the transfer of radiation in the atmosphere and can impact the evolution of simulated tropical cyclones. Clouds are a critical element of Earth’s climate because they strongly affect both the incoming solar (or shortwave) energy, which fuels the climate system, and the thermal (or…

Community Connections: Science Advisory Board Meeting - Sept 14-15

The DTC hosted its annual DTC Science Advisory Board (SAB) meeting on September 14-15, 2016.  This annual event provides an opportunity for the DTC to present a review of DTC key accomplishments over the past three years to representatives of the research community and to collect input directed at shaping a strategy for the future.  “The DTC enables and supports a wide variety of research-to-operations and operations-to-research activities,” said SAB Chair Russ Schumacher. “The SAB discussed ways that these activities can be further strengthened, including through model evaluation and…

Did you know?: Join Weekly Webinar Discussion on EMC’s Forecast Systems

You can join weekly webinars to discuss the performance of EMC’s forecast/analysis systems from a synoptic and mesoscale perspective. The weekly webinar is led by EMC’s Model Evaluation Group and participants include model developers, NCEP service centers, NWS regional and field offices, DTC staff, academic community and private sector. Webinars serve as a forum for EMC to reach out to forecast and user community Interested in participating?  Contact Glenn White or Geoff Manikin Here's a conference abstract of Glenn's on this group toohttps://ams.confex.com/ams/97Annual/webprogram/Paper313180…

Software Release: Release v3.9a of the HWRF system

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…