Visitor Projects

2024

Improving METplus Test Infrastructure and Code Quality

verification
John Sharples, Australian Bureau of Meteorology

Development of a threshold-weighted spatial verification approach to evaluate NWP performance for extreme events

verification
Nicholas Loveday, Australian Bureau of Meteorology

2023

Evaluation of the impact of different microphysics schemes on HAFS model QPF forecasts

hurricanes
Shaowu Bao, Coastal Carolina University

2022

Improvement of PBL Schemes within HAFS for Better Forecasts of TC Structure and Large-Scale Steering

hurricanes
Andrew Hazelton, University of Miami CIMAS/NOAA AOML
Final Report

UFS/METplus Hack-a-thon

verification
Cristiana Stan, George Mason University

Evaluating sub-grid cloud variability enhancements in HAFS tropical cyclone predictions

hurricanes
Michael Iacono, Atmospheric and Environmental Research
John Henderson, Atmospheric and Environmental Research

2021

Using MET and METplus to evaluate precipitation forecasts at time scales up to and including sub-seasonal (monthly) time horizons

verification
Marion Mittermaier, U.K. MetOffice
Final Report

Retrospective Experiments with GSI Multiscale EnKF Data Assimilation for Convection-Allowing Stand-Alone Regional FV3

data assimilation
Chong-Chi Tong, University of Oklahoma
Final Report

Assessing the Rapid Refresh Forecast System Data Assimilation Capability to Represent an Amazon Coastal Squall Line

data assimilation
Luis Fernando Sapucci, Graduate Program in Meteorology, National Institute for Space Research, Sao Jose dos Campos, Sao Paulo, Brazil
Grad Student: Ivette Hernandez Banos
Final Report

2020

Evaluating CCPP Physics Across Scales for Severe Convective Events

mesoscale modeling
Bill Gallus, Iowa State University
Jonathan Thielen, Grad Student
Final Report
Gallus, W. A., Jr., and M. A. Harrold, 2023: Challenges in numerical weather prediction of the 10 August 2020 midwestern derecho: Examples from the FV3-LAM.  Wea. Forecasting, 38 (8), 1429 - 1445, https://doi.org/10.1175/WAF-D-23-0019.1.

Testing Exponential-Random Cloud Overlap for HWRF Operations and Unifying RRTMG Radiation Codes in Operational Use at NOAA/EMC

hurricanes
Michael J. Iacono, Atmospheric and Environmental Research / Verisk Analytics
John M. Henderson, Atmospheric and Environmental Research / Verisk Analytics
Final Report

Investigating the FV3-CAM data assimilation capability representing convective processes and structures of squall lines over the Great Plains

data assimilation mesoscale modeling
Luiz Fernando Sapucci, National Institute of Space Research
Ivette Hernández Baños, Grad Student
Final Report

Use GOES data to evaluate the performance of Hurricane Analysis and Forecast System (HAFS)

hurricanes
Shaowu Bao, Department of Coastal and Marine Systems Science, Coastal Carolina University
Final Report
Bao, S., Bernardet, L., Thompson, G., Kalina, E., Newman, K., & Biswas, M. (2020). Impact of the hydrometeor vertical advection method on HWRF’s simulated hurricane structure. Weather And Forecasting, 35, 723-737. doi:10.1175/WAF-D-19-0006.1.    
Bao, S., Z. Zhang, E. Kalina, and B. Liu, 2022.  The use of composite GOES-R satellite imagery to evaluate a TC intensity and vortex structure forecast by an FV3GFS-based hurricane forecast model.  Atmosphere, 13 (1), 126, https://doi.org/10.3390/atmos13010126.

WRF as a User-Friendly Cloud Service

regional ensemble
Don Morton, Boreal Scientific Computing LLC
Final Report

2019

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

data assimilation
Xudong Liang, Chinese Academy of Meteorological Sciences
Final Report

Improving Heavy Rainfall Guidance from Convection-Allowing Ensembles Using Machine Learning

regional ensemble
Eric Loken, Grad Student, University of Oklahoma
Adam Clark, NOAA/NSSL, University of Oklahoma
Final Report
Loken, E. D., A. J. Clark, A. McGovern, M. Flora, and K. Knopfmeier, 2019: Postprocessing Next-Day Ensemble Probabilistic Precipitation Forecasts Using Random Forests. Wea. Forecasting, 34, 2017–2044, https://doi.org/10.1175/WAF-D-19-0109.1.    
Loken, E. D., A. J. Clark, and C. D. Karstens, 2020: Generating Probabilistic Next-Day Severe Weather Forecasts from Convection-Allowing Ensembles Using Random Forests. Wea. Forecasting, 35, 1605–1631, https://doi.org/10.1175/WAF-D-19-0258.1.

3D-Var data assimilation of VIIRS aerosol retrievals

data assimilation
Cheng-Hsuan Lu, University at Albany, State University of New York
Shih-Wei Wei, Grad Student
Final Report

Evaluating and Improving Planetary Boundary Layer Parameterizations in HWRF using Aircraft Observations

hurricanes
Jun Zhang
Final Report
Zhang, J. A., E. A. Kalina, M. K. Biswas, R. F. Rogers, P. Zhu, and F. D. Marks, 2020.  A review and evaluation of planetary boundary layer parameterizations in hurricane weather research and forecasting model using idealized simulations and observations.  atmosphere, 11, 1091, 1 - 21, doi:10.3390/atmos11101091.  Available at: https://www.mdpi.com/2073-4433/11/10/1091/pdf 

2018

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

data assimilation
Xuguang Wang, University of Oklahoma
Final Report

A New Measure of Ensemble Central Tendency

regional ensemble
Jing Zhang, University of Oklahoma
Jie Feng, University of Oklahoma
Final Report

Adapting MODE for High-Resolution Model Snowband Verification

regional ensemble verification
Gary Lackmann, North Carolina State University
Grad Student: Jacob Radford, North Carolina State University
Final Report

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

verification
Eric Gilleland, NCAR/RAL
Final Report
Gilleland, E., G. Skok, B. G. Brown, B. Casati, M. Dorninger, M. P. Mittermaier, N. Roberts, and L. J. Wilson, 2020. A novel set of verification test fields with application to distance measures. Mon. Wea. Rev., 148 (4), 1653 - 1673, doi: 10.1175/MWR-D-19-0256.1.

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

data assimilation
Barbara Scherllin-Pirscher, Zentralanstalt fü Meteorologie und Geodnyamik
Final Report

2017

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

mesoscale modeling
Noemi Sarkadi, University of Pecs
Final Report

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

hurricanes
Michael Iacono, Atomspheric and Environmental Research
John Henderson, Atmospheric and Environmental Research
Final Report

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

hurricanes
Jun Zhang, University of Miami and NOAA/HRD
Final Report

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

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

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

regional ensemble
Bill Gallus, Iowa State University
Final Report

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

data assimilation
Karina Apodaca, Colorado State University
Final Report

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

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

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

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

2016

Testing Revisions to RRTMG Cloud Radiative Transfer and Performance in HWRF

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

Impact of Planetary Boundary Layer Assumptions on HWRF Forecast Skill

hurricanes
Robert Fovell, SUNY-Albany
Final Report
Bu, Y. P., R. G. Fovell, and K. L. Corbosiero, 2017: The influences of boundary layer mixing and cloud-radiative forcing on tropical cyclone size. J. Atmos. Sci., 74, 1273–1292, https://doi.org/10.1175/JAS-D-16-0231.1.

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

regional ensemble verification
Patrick Skinner, University of Oklahoma
Final Report

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

hurricanes
Dev Niyogi, Purdue University
Grad Student: Subashini Subramanian
Final Report

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

hurricanes
Shaowu Bao, Coastal Carolina University
Final Report

2015

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

verification
Jason Otkin, University of Wisconsin-Madison
Final Report

Mesoscale Model Intercomparison at Convection-Allowing Resolution using MODE

mesoscale modeling verification
Gretchen Mullendore, University of North Dakota
Grad Student: Mariusz Starzec
Final Report
  Starzec, M., G.L. Mullendore, and P.A. Kucera, 2018: Using Radar Reflectivity to Evaluate the Vertical Structure of Forecasted Convection. J. Appl. Meteor. Climatol., 57 (12), 2835 - 2849, https://doi.org/10.1175/JAMC-D-18-0116.1 

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

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

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

mesoscale modeling
Dev Niyogi, Purdue University
Grad Student: Xing Liu
Final Report

2014

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

hurricanes
Thomas Galarneau, National Center for Atmospheric Research
Final Report

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

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

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

hurricanes
Richard Yablonsky, University of Rhode Island
Final Report

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

mesoscale modeling
Istvan Geresdi, University of Pecs
Final Report

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

hurricanes
Shaowu Bao, Coastal Carolina University
Final Report

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

regional ensemble
Hongli Wang, Colorado State University
Final Report

2013

Diagnosing Tropical Cyclone Motion Forecast Errors in HWRF

hurricanes
Thomas Galarneau, National Center for Atmospheric Research
Final Report

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

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

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

data assimilation hurricanes
Man Zhang, Colorado State University
Final Report

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

verification
Marion Mittermaier, UK Met Office
Final Report

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

regional ensemble verification
Adam Clark, University of Oklahoma
Final Report

2012

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

verification
Adam Clark, University of Oklahoma
Final Report

Improvements to modeling persistent surface cold pools in WRF

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

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

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

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

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

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

hurricanes
Jonathan Vigh, National Center for Atmospheric Research
Final Report

2010

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

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

Studies of Hurricane Initialization in Short-term Intensity Forecasts

hurricanes
Xiao Qingnong, University of South Florida
Final Report

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

data assimilation regional ensemble
Brian Ancell, Texas Tech University
Grad Student: Christopher Bednarczyk
Final Report

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

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

A generalized parameterization for clouds and turbulence in WRF

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

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

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

2008

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

data assimilation
Chunhua Zhou, University of Hawaii at Manoa
Yi-Leng Chen, University of Hawaii at Manoa
Final Report
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.

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

mesoscale modeling
Thara Prabhakaran, University of Georgia
Final Report
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.

Introduction of terrain-intersecting coordinates into WRF

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

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

regional ensemble
Brian Ancell, University of Washington
Final Report

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

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

2007

Verification of WRF ensembles using object oriented approaches

regional ensemble
Bill Gallus, Iowa State University
Final Report
Gallus, W. A., Jr., 2010: Application of object-based verification techniques to ensemble precipitation forecasts. Weather and Forecasting, vol. 25, 144-158.

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

mesoscale modeling
Gert-Jan Steeneveld, Wageningen University
Final Report

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

mesoscale modeling
Jeffrey Mirocha, Lawrence Livermore National Laboratory
Final Report

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

mesoscale modeling
Mariusz Pagowski, Colorado State University
Final Report

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

mesoscale modeling
Laura Fowler, Colorado State University
Final Report

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

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

Idealized orographic flow simulations in NMM and ARW

mesoscale modeling
Craig Epifanio, Texas A&M University

Establishment of a verification testbed at the WRF Developmental Testbed Center

verification
Mike Baldwin, Purdue University
Final Report

Scale-decomposition verification tools for the WRF model

verification
Barbara Casati, Environment Canada
Final Report

2005

Verification of WRF Experiments Over the Southeast United States

mesoscale modeling
Peter Bogenschutz, University of Utah
Final Report

Object-oriented Verification of Reflectivity Fields based on Cluster Analysis

verification
Caren Marzban, University of Washington
Final Report
Marzban, C., S. Sandgathe, 2008: Cluster Analysis for Object-Oriented Verification of Fields: A Variation. Monthly Weather Review, Vol. 136, 1013-1025.
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.
Marzban, C., and S. Sandgathe 2006: Cluster analysis for verification of precipitation fields. Weather and Forecasting, Vol. 21, 824-838.

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

verification
Paul Roebber, University of Wisconsin-Milwaukee
Final Report

Verification and Calibration of Simulated Reflectivity Products

verification
Mark Stoelinga, University of Washington
Final Report

Radiance Data Assimilation in ARW WRF Mesoscale System

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

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

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

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

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

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

mesoscale modeling
Dave Dempsey, San Francisco State University
Final Report
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.

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

mesoscale modeling
Joe Galewsky, University of New Mexico
Final Report

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

mesoscale modeling
Bill Gallus, Iowa State University
Grad Student: Isidora Jankov,
Grad Student: Eric Aligo
Final Report

A new multi-scale verification method for WRF

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

2004

Relaxed Threat Score

verification
Ying Lin
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.

Testing of WRF model configurations

mesoscale modeling
David Dempsey, San Francisco State University

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

mesoscale modeling
William Gallus, Iowa State University
Grad Student: Isidora Jankov
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.
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