Visitor Projects

2019

Evaluation of Newly Developed Observation Operators for Assimilating Radar Radical Velocity Observations in GSI to Improve Storm Forecast Using the HRRR System

Xudong Liang, Chinese Academy of Meteorological Sciences
research areas:
data assimilation

2018

Facilitation transition of GSI based hybrid EnVar data assimilation research and development on global, hurricane and convective predication to NWS operational NWP suites

Xuguang Wang, University of Oklahoma
research areas:
data assimilation

A New Measure of Ensemble Central Tendency

Jing Zhang, University of Oklahoma
Jie Feng, University of Oklahoma
research areas:
regional ensemble

Adapting MODE for High-Resolution Model Snowband Verification

Gary Lackmann, North Carolina State University Jacob Radford, North Carolina State University
research areas:
regional ensemble, verification

Adavanced Distance-based, Field Deformation and Statistical Hypothesis Utilities for MET

Eric Gilleland, NCAR/RAL
research areas:
verification

Towards improved knowledge of the vertical distribution of aerosols in the atmosphere: Assimilation of vertical LIDAR measurements

Barbara Scherllin-Pirscher, Zentralanstalt fü Meteorologie und Geodnyamik
research areas:
data assimilation

2017

Use of the CLUE to examine importance of mixed physics in ensembles

Bill Gallus, Iowa State University
Final Report
research areas:
regional ensemble

R20 transition of the GOES-R GLM lightning assimilation capability in GSI for use in NCEP GDAS

Karina Apodaca, Colorado State University
Final Report
research areas:
data assimilation

Evaluation of the Newly Developed Observation Operators for Assimilating Satellite Cloud Precipitation Observations in GSI within HWRF system

Ting-Chi Wu, Colorado State University
Final Report
research areas:
data assimilation, hurricanes

Advanced Data Assimilation Techniques Applied to a Regional High Resolution Rapid Refresh Model in Alaska (HRRR-Alaska)

Jiang Zhu, University of Alaska - Fairbanks
Final Report
research areas:
data assimilation

Towards improving high resolution NWP forecasts of convection using an explicit/ bin microphysics scheme to guide bulk microphysics scheme improvements

Noemi Sarkadi, University of Pecs
research areas:
mesoscale modeling

Testing Variations of Exponential-Random Cloud Overlap with RRTMG in HWRF

Michael Iacono, Atomspheric and Environmental Research
John Henderson, Atmospheric and Environmental Research
research areas:
hurricanes

Evaluating the Impact of Model Physics on HWRF Forecasts of Tropical Cyclone Rapid Intensification

Jun Zhang, University of Miami and NOAA/HRD
research areas:
hurricanes

An Adaptive Bayesian Model Combination (BMC) Post Processor for the HRRR-TLE Forecast System

Paul Roebber, University of Wisconsin-Milwaukee
research areas:
regional ensemble

2016

Testing Revisions to RRTMG Cloud Radiative Transfer and Performance in HWRF

Michael Iacono, Atmospheric and Environmental Research
John Henderson, Atmospheric and Environmental Research
Final Report
research areas:
hurricanes

Impact of Planetary Boundary Layer Assumptions on HWRF Forecast Skill

Robert Fovell, SUNY-Albany
research areas:
hurricanes

Quantifying the Value of Radar Data Assimilation in the Community Leveraged Unified Ensemble using Object-Based Verification Methods

Patrick Skinner, University of Oklahoma
Final Report
research areas:
regional ensemble, verification

Developing Landfall Capability in Idealized HWRF for Assessing the Impact of Land Surface on Tropical Cyclone Evolution

Dev Niyogi, Purdue University Subashini Subramanian
Final Report
research areas:
hurricanes

Evaluation of the microphysics scheme in HWRF 2016 version with remote-sensing data

Shaowu Bao, Coastal Carolina University
Final Report
research areas:
hurricanes

2015

Object Based Verification for the HRRR Model using Simulated and Observed GOES Infrared Brightness Temperatures

Jason Otkin, University of Wisconsin-Madison
Final Report
research areas:
verification

Mesoscale Model Intercomparison at Convection-Allowing Resolution using MODE

Gretchen Mullendore, University of North Dakota Mariusz Starzec
Final Report
Related publication:

 

Starzec, M., G.L. Mullendore, and P.A. Kucera, 0: Using Radar Reflectivity to Evaluate the Vertical Structure of Forecasted Convection. J. Appl. Meteor. Climatol., 0,https://doi.org/10.1175/JAMC-D-18-0116.1 

research areas:
mesoscale modeling, verification

Implementation and Validation of a Geo-Statistical Operator for the Assimilation of Near-Surface Winds in GSI

Joel Bedard, University of Quebec at Montreal
Final Report
research areas:
data assimilation

Improving WRF Weather Forecast through Enhanced Representation of Cropland-Atmosphere Interactions

Dev Niyogi, Purdue University Xing Liu
Final Report
research areas:
mesoscale modeling

2014

Developing and supporting global HWRF ocean coupling with advanced ocean physics and initialization options and new diagnostic tools for comprehensive model evaluation

Richard Yablonsky, University of Rhode Island
Final Report
research areas:
hurricanes

Towards improving representation of convection and MCC longevity in high-resolution WRF and NEMS-NMMB model forecasts

Istvan Geresdi, University of Pecs
Final Report
research areas:
mesoscale modeling

Evaluation of two HWRF microphysics/radiation configurations with remote-sensing data

Shaowu Bao, Coastal Carolina University
Final Report
research areas:
hurricanes

Estimation of Initial and Forecast Error Variances for the NCEP operational Short-Range Ensemble Forecast (SREF) system

Hongli Wang, Colorado State University
Final Report
research areas:
regional ensemble

Diagnosing Tropical Cyclone Motion Forecast Errors in the 2014 HWRF Retrospective Test (H214)

Thomas Galarneau, National Center for Atmospheric Research
Final Report
research areas:
hurricanes

Demonstration Project: Development of a Large Member Ensemble Forecast System for Heavy Rainfall using Evolutionary Programming

Paul Roebber, University of Wisconsin-Milwaukee
Final Report
research areas:
regional ensemble

2013

Diagnosing Tropical Cyclone Motion Forecast Errors in HWRF

Thomas Galarneau, National Center for Atmospheric Research
Final Report
research areas:
hurricanes

Improving HWRF Track and Intensity Forecasts via Model Physics Evaluation and Tuning

Robert Fovell, University of California-Los Angeles Yizhe Peggy Bu
Final Report
research areas:
hurricanes

Impact Assessment of Cloud-Affected AMSU-A Radiance Assimilation in TC Inner-Core Region using Hybrid Data Assimilation Approaches

Man Zhang, Colorado State University
Final Report
research areas:
data assimilation, hurricanes

Incorporating Observations Uncertainty to a Spatial Probabilistic Verification Framework for km-scale Models

Marion Mittermaier, UK Met Office
Final Report
research areas:
verification

Object-based Time-Domain Diagnostics for High-resolution Ensemble Forecasting and Evaluation in NOAA/HWT Spring Forecasting Experiments

Adam Clark, University of Oklahoma
Final Report
research areas:
regional ensemble, verification

2012

Development and Application of 3-Dimensional Object Algorithms to High Resolution Forecasts

Adam Clark, University of Oklahoma
Final Report
research areas:
verification

Improvements to modeling persistent surface cold pools in WRF

Rob Fovell, University of California-Los Angeles Travis Wilson
Final Report
research areas:
mesoscale modeling

Moving The NEMS & NMM-B Into a Broader Community Resource Environment

Don Morton, University of Alaska - Fairbanks
Delia Arnold, Technical University of Catalonia / University of Natural Resources and Life Sciences
Final Report
research areas:
mesoscale modeling

Deploying the MIT Field Alignment System and Test-bed (FAST) in DTC

Sai Ravela, Massachusetts Institute of Technology
Final Report
research areas:
regional ensemble, verification

Development of an HWRF Diagnostics Module to Evaluate Intensity & Structure Using Synthetic Flight Paths Through Tropical Cyclones

Jonathan Vigh, National Center for Atmospheric Research
Final Report
research areas:
hurricanes

2010

Development of Operational Weather Research and Forecasting Model Ensemble Sensitivity/Data Assimilation Tools

Brian Ancell, Texas Tech University Christopher Bednarczyk
Final Report
research areas:
data assimilation, regional ensemble

Incorporating spatial analysis of forecast performance into the MET package at the DTC

Michael E. Baldwin, Purdue University
Kimberly Elmore, University of Oklahoma
Final Report
research areas:
verification

A generalized parameterization for clouds and turbulence in WRF

Vincent E. Larson, University of Wisconsin-Milwaukee
Final Report
research areas:
mesoscale modeling

Cut-Cell Representation of Orography: Exploring an Alternative Method for Dealing with Flows over Steep and Complex Terrain

Sarah-Jane Lock, University of Leeds
Final Report
research areas:
mesoscale modeling

Alaska High Resolution Rapid Refresh (HRRR-AK) - Verification and Study of Model Configuration for Operational Deployment

Don Morton, University of Alaska-Fairbanks
Final Report
research areas:
mesoscale modeling

Studies of Hurricane Initialization in Short-term Intensity Forecasts

Xiao Qingnong, University of South Florida
Final Report
research areas:
hurricanes

2008

Assimilation of GPS RO and its Impact on Numerical Weather Predictions in Hawaii

Chunhua Zhou, University of Hawaii at Manoa
Yi-Leng Chen, University of Hawaii at Manoa
Final Report
Related publication:

Zhou, Chunhua, and Ying-Len Chen, 2014Assimilation of GPS RO Refractivity Data and
Its Impact on Simulations of Trade Wind
Inversion and a Winter Cold Front
, Natural Science, Vol. 6, pp 605-614.

research areas:
data assimilation

The role of low-level jets in the cold air damming events using high resolution Advanced Research WRF model

Thara Prabhakaran, University of Georgia
Final Report
Related publication:

Prabha, T. V., and G. Hoogenboom (2009), Observed dimming effect during a forest fire in the southeastern United States and the role of aerosols, Geophys. Res. Lett., 36, L11806, doi:10.1029/2009GL038435.

research areas:
mesoscale modeling

Introduction of terrain-intersecting coordinates into WRF

Sarah-Jane Lock, University of Leeds
Final Report
research areas:
mesoscale modeling

Development of a multi-scale operational Weather Research and Forecasting model ensemble Kalman filter

Brian Ancell, University of Washington
Final Report
research areas:
regional ensemble

Implementation and validation of WRF model as ensemble member of a probabilistic prediction system over Europe

Daniel Santos Munoz, Servicio de Predecibilidad y Prediciones Extendidas
Final Report
research areas:
regional ensemble

2007

Establishment of a verification testbed at the WRF Developmental Testbed Center

Mike Baldwin, Purdue University
Final Report
research areas:
verification

Scale-decomposition verification tools for the WRF model

Barbara Casati, Environment Canada
Final Report
research areas:
verification

Verification of WRF ensembles using object oriented approaches

Bill Gallus, Iowa State University
Final Report
Related publication:

Gallus, W. A., Jr., 2010: Application of object-based verification techniques to ensemble precipitation forecasts. Weather and Forecasting, vol. 25, 144-158.

research areas:
regional ensemble

Evaluation of WRF model improvements with novel boundary-layer observations: Focus on diurnal cycle and stable boundary layer

Gert-Jan Steeneveld, Wageningen University
Final Report
research areas:
mesoscale modeling

New large eddy simulation subfilter turbulence models implemented into the Advanced Research WRF version 3.0

Jeffrey Mirocha, Lawrence Livermore National Laboratory
Final Report
research areas:
mesoscale modeling

Implement and evaluate an improved Mellor-Yamada level-2.5 and level-3 turbulence closures in WRF

Mariusz Pagowski, Colorado State University
Final Report
research areas:
mesoscale modeling

Implementation of the two-moment RAMS cloud microphysics in ARW: Comparisons against one-moment closure in WRF

Laura Fowler, Colorado State University
Final Report
research areas:
mesoscale modeling

Implementation of the Quasi-Normal Scale Elimination (QNSE) Model of stably stratified turbulence in WRF

Semion Sukoriansky, Ben-Gurion University of the Negev
Final Report
research areas:
mesoscale modeling

Idealized orographic flow simulations in NMM and ARW

Craig Epifanio, Texas A&M University
research areas:
mesoscale modeling

2005

Study of the impacts of grid spacing and physical parameterizations on WRF simulations of convective system rainfall and morphology

Bill Gallus, Iowa State University Isidora Jankov, Eric Aligo
Final Report
research areas:
mesoscale modeling

A new multi-scale verification method for WRF

Hsu Hsiao-ming, National Center for Atmospheric Research
Final Report
research areas:
verification

Verification of WRF Experiments Over the Southeast United States

Peter Bogenschutz, University of Utah
Final Report
research areas:
mesoscale modeling

Object-oriented Verification of Reflectivity Fields based on Cluster Analysis

Caren Marzban, University of Washington
Final Report
Related publication:

Marzban, C., S. Sandgathe, 2008: Cluster Analysis for Object-Oriented Verification of Fields: A Variation. Monthly Weather Review, Vol. 136, 1013-1025.


Related publication:

Marzban, C., S. Sandgathe, and H. Lyons 2008: An Object-oriented Verification of Three NWP Model Formulations via Cluster Analysis: An objective and a subjective analysis. Monthly Weather Review, Vol. 136, 3392-3407.


Related publication:

Marzban, C., and S. Sandgathe 2006: Cluster analysis for verification of precipitation fields. Weather and Forecasting, Vol. 21, 824-838.

research areas:
verification

Verification Development: An events-oriented approach to verifying high resolution forecasts of wintertime precipitation

Paul Roebber, University of Wisconsin-Milwaukee
Final Report
research areas:
verification

Verification and Calibration of Simulated Reflectivity Products

Mark Stoelinga, University of Washington
Final Report
research areas:
verification

Radiance Data Assimilation in ARW WRF Mesoscale System

Jianjun Xu, Joint Center for Satellite Data Assimilation
Dale Barker, National Center for Atmospheric Research
Final Report
research areas:
data assimilation

Implementation and Evaluation of WSR-88D Radial Velocity Data Assimilation for WRF-NMM via GSI

Shun Liu, Center for Analysis and Prediction of Storms
Ming Xue, University of Oklahoma
Final Report
research areas:
data assimilation

A Real Case Study of Using Cloud Analysis in Grid-point Statistical Interpolation Analysis and Advanced Research WRF Forecast System

Ming Hu, Center for Analysis and Prediction of Storms
Ming Xue, University of Oklahoma
Final Report
research areas:
data assimilation

High-Resolution Winter-Season NWP: Preliminary Evaluation of the WRF ARW and NMM Models in the DWFE Forecast Experiment

Dave Dempsey, San Francisco State University
Final Report
Related publication:

Skamarock, William C., and David Dempsey, 2005: High-resolution winter-season NWP: Preliminary evaluation of the WRF ARW and NMM models in the DWFE forecast experiment. 21th Conference on Weather and Forecasting/17th Conference on Numerical Weather Prediction, August 1-5, 2005, Washington, D.C., American Meteorology Society.

research areas:
mesoscale modeling

Quantifying the dependence of convective parameterization activity on horizontal grid spacing in WRF: Preliminary Results

Joe Galewsky, University of New Mexico
Final Report
research areas:
mesoscale modeling

2004

Relaxed Threat Score

Ying Lin
Related publication:

Lin, Ying, Barbara G. Brown, Keith Brill and Geoffrey J. DiMego, 2005: Optimally Shifted QPF Verification Scores. 21th Conference on Weather and Forecasting/17th Conference on Numerical Weather Prediction, August 1-5, 2005, Washington, D.C., American Meteorology Society.

research areas:
verification

Testing of WRF model configurations

David Dempsey, San Francisco State University
research areas:
mesoscale modeling

An investigation of forecast sensitivities to dynamic core and physics during the warm season

William Gallus, Iowa State University Isidora Jankov
Related publication:

Gallus Jr., W.A. and J. F. Bresch: Comparison of Impacts of WRF Dynamic Core, Physics Package, and Initial Conditions on Warm Season Rainfall Forecasts, Monthly Weather Review, Vol. 134, pp. 2632-2641.


Related publication:

Jankov, I., W. A. Gallus Jr., M. Segal and S. E. Koch, 2007: Influence of Initial Conditions on the WRF-ARW Model QPF Response to Physical Parameterization Changes. Weather and Forecasting, Vol. 22, pp. 501-519

research areas:
mesoscale modeling