Radar Operations Center

Technical Advisory Committee Meetings

Following is a list of TAC Committee Meetings, broken down by year and month. Click the "+" next to the year to expand and click the "-" to contract the list.

Please note: All of the following documents are in PDF format.

• 2022
  • March
    • Technical Advisory Committee Meeting Notes
    • SLEP Upgrade Status
    • ZDR Calibration Using DAS
    • Adaptive Range Averaging
    • Specific Attenuation Rain Rate
    • Dual Pol Snow QPE
    • Predicting Fallout of Heavy Snow
    • Regression Clutter Filtering
    • Nonlinear Receivers and Impact on ZDR
    • New Algorithm for Melting Layer Detection

• 2019
  • April
    • Technical Advisory Committee Meeting Notes
    • Kurdzo Chaff Detection
    • Williams Crystal Sandwich
    • CLEAN-AP WET Warde Torres
    • Hubbert Regression Clutter Filtering
    • Hybrid Scan Estimators
    • Melnikov ZDR Calibration
    • MRMS Briefing
    • Product Improvement Update
    • Range Oversampling
    • Ryzhkov Bukovcic Polarimetric Snow Measurements
    • SLEP Briefing
    • Staggered PRT Ward Torres
    • TAC 2019 Low Elevation Angle

• 2017
  • February
    • Technical Advisory Committee Meeting Notes
    • Kurdzo Chaff Detection
    • TAC-Specific Attenuation QPE Decision
    • Ice Book Review - February 16, 2017
    • NSSL-Specific Attenuation Decision - February 16, 2017

• 2016
  • March
    • Technical Advisory Committee Meeting Notes
    • Multi-Radar Multi-Sensor (MRMS) System - What is...?
    • Development and Validation of the R(A) Algorithm for Rainfall Estimation
    • ZDR Calibration Update
    • Using the Crosspolar Power Technique for ZDR Calibration for S-Pol During PECAN

• 2015
  • March
    • Technical Advisory Committee Meeting Notes
  • November
    • Tornado Debris Signature
    • Less Tapered Windowing Effects
    • R20 Projects Update
    • Weather Environmental Threshold

• 2014
  • June
    • Technical Advisory Committee Meeting Notes

• 2013
  • January
    • Technical Advisory Committee Summary and Executive Session
  • November
    • Technical Advisory Committee Meeting Notes

• 2012
  • March
    • General Briefings
      • DP QPE Performance Verification
      • Expected ZDR Values and Those Observed in the Field
      • KOUN Calibration Sphere Results
      • NEXRAD Performance During the 2011 Storm Season as Seen Through Service Assessments
      • Pending Beam Blockage Issues for Melbourne, FL WSR-88D
      • Update KLGX Low Elevation Angle Test
      • Update on Spectrum Challenges for WSR-88D and all S-Band Radars
      • WFO Phoenix Ops The Dust Storms of 2011
      • WFO Tucson Operations Significant Events of 2011
      • WSR-88D Program Overview Update
      • ZDR Calibration Status of Calibration Method for WSR-88D
  • August
    • Technical Advisory Committee Summary and Executive Session
    • Decision Briefings
      • Decision Briefing 1: Icing Hazard Levels
      • Decision Briefing 2: Hail Hazard Layers
    • General Briefings
      • Dual Pol Challenges and Opportunities (PowerPoint Presentation)
      • New Radial-by-Radial Noise Power Estimation Technique (PowerPoint Presentation)
      • Update on Clean AP Algorithm (PowerPoint Presentation)
      • Update on Clean AP for Staggered PRT (PowerPoint Presentation)
      • Update on MIT LL Automated Microburst Detection Algorithm
      • Update on Staggered PRT (PowerPoint Presentation)

• 2011
  • March & July
    • Technical Advisory Committee Summary and Executive Session
    • Technical Advisory Committee Recommendation Letter
    • General Briefings
      • A Preliminary Comparison of MDA and LLSD Performance and Properties
      • Automated Volume Scan Evaluation and Termination (AVSET)
      • Build 13 CMD TAC Briefing
      • Clutter Environment Analysis using Adaptive Processing (CLEAN-AP)
      • CMD Improvements and Transition to Dual Polarization
      • DP QPE Algorithm Improvement Initiatives
      • Dual-Polarization (DP) Evaluation
      • KLGX Low Elevation Angle Test
      • Lincoln Laboratory Dual Pol Algorithm Development Program
      • MPAR Update
      • Multi-lag Processing to Improve Polarimetric Radar Data Quality
      • NEXRAD Product Improvement Dual Polarization Beta Test & Deployment Update
      • NEXRAD Program Radar Operations Center Update
      • Non-Uniform Beam Filling, Attenuation, and Their Effects on Dual Pol Data
      • Palmer Wind Turbine Clutter Mitigation Research
      • Spectrum Issues TAC Presentation
      • Staggered PRT Update
      • Status on the Implementation of the Hybrid Spectrum Width Estimator
      • Update on Two-Dimensional Velocity Dealiasing Algorithm
      • Validation of the Dual Pol Quantitative Precipitation Estimation (DP QPE) Algorithm
      • ZDR Calibration

• 2009
  • TAC Summary - November 2009 Meeting, Norman, OK
  • TAC Recommendation Letter
  • Technical Decision Briefings
    • Automated Volume Scan Evaluation and Termination (AVSET)
    • Hybrid Spectrum Width Estimator
  • Informational Briefings
    • Automatic Detection and Removal Of Ground Clutter Contamination on Weather Radars
    • Clutter Environment Analysis using Adaptive Processing (CLEAN-AP) 11/17/09
    • Clutter Environment Analysis using Adaptive Processing: The CLEAN-AP Filter 11/19/09
    • CMD Deployment
    • Cross-Coupling, Antenna Errors and Simultaneous Horizontal and Vertical Polarization Transmit Data
    • Dual Polarization Calibration L3 - Baron Services Design for the WSR-88D
    • Dual-Polarization Data Quality Update
    • Effects of Antenna Patterns on Bias in Differential Reflectivity
    • Modification of the QPE Algorithm to Account for Partial Beam Blockage - Update on the HCA and QPE Algorithm Development
    • NEXRAD Product Improvement Dual Polarization Status
    • NEXRAD Program/ Radar Operations Center Update
    • Operational Utility of Spectrum Width
    • Staggered PRT Status

• 2007
  • Spring
    • Agenda
    • Minutes
  • Presentations
    • Data Windowing in ORDA
    • Super Resolution
    • NWS Office of Science and Technology NEXRAD Product Improvement
    • ZDR Calibration
    • Dual Polarization Algorithms, QPE and HCA
    • Interim Results of NSSL/CIMMS Study on Impacts of Wind Turbines on WSR-88D and Forecast Operations
    • University of Oklahoma Wind Turbine Clutter Study Update
    • Radar Echo Classifier Precipitation Detection Algorithm
    • Clutter Mitigation Decision Algorithm
    • Refractivity Measurements of Water Vapor, 2007 Field Study Plans
    • Spectrum Width Estimator Problems and Their Impact on the NEXRAD Turbulence Detection Algorithm (NTDA)
    • Update on Combined SZ-2/MPDA Volume Coverage Pattern to Mitigate Range Folding
    • Status of TDWR RDA Upgrade and Comparison of RV Mitigation Techniques
    • China CINRAD Network

• 2006
  • Spring 2006 Meeting, Norman, OK
    • Agenda
    • Presentations
      • ORDA Data Quality Monitoring
      • SZ-2 Validation & Operations Testing Information Brief: Preliminary Results
      • Super Resolution Technical Briefing
      • Dual Polarization: Mitigation of Ambiguities in Range and Velocity
      • NEXRAD Product Improvement Program Update
      • Refractivity Retrieval Research at the University of Oklahoma
      • Annual Update to the WSR-88D Tropical Cyclone Operations Plan and Lessons Learned
      • Impact of Range Correction on Precipitation Estimates and Hydrologic Model Simulations/Probabilistic Quantitative Precipitation Estimates From Radar
      • Clutter Mitigation Decision (CMD) System Status and Demonstration Studies
      • Super Resolution Independent Verification and Validation (IV&V)Super Resolution Independent Verification and Validation (IV&V)
      • Site Specific Scan Strategy Working Group (4S) Update Including Potential Use of Lower Elevation Angles
  • Fall 2006 Meeting, Norman, OK
    • Agenda
    • Presentations
      • Phased Array R&D Plan and Testing Updates
      • Clutter Mitigation Decision (CMD) System for the NEXRAD ORDA
      • NEXRAD Product Improvement
      • Combined MPDA/SZ-2 Volume Coverage Pattern to Mitigate Range Folding
      • Wind Farms and Weather Surveillance Radar
      • Mitigation of Wind Turbine Clutter on the WSR-88D Radars Using Spectral Processing and Non-Linear Filtering
      • NEXRAD Turbulence Detection Algorithm
      • Precipitation Detection Algorithm
      • Differential Reflectivity Calibration for NEXRAD
      • The Uncertainty of RF Power Measurements for ZDR Calibration
      • REFRACTT - 2006 Results

• 2005
  • Spring 2005 Meeting, Norman, OK
    • Agenda
    • Presentations
      • HREET Algorithm Operational Accuracy
      • Correcting AP Mitigation Within Composite Reflectivity Products
      • High Resolution VIL Algorithm Changes
      • MIGFA
  • Fall 2005 Meeting, San Diego, CA
    • Agenda
    • Presentations
      • Using DQA or REC as a Filter
      • NSSL QC Neural Network
      • SCIT Rapid Update
      • RDA-based Clutter Mitigation Update
      • 25th Operational Weather Squadron NEXRAD Ops

• 2004
  • Spring 2004 Meeting, Norman, OK
    • Agenda
    • Presentations
      • ROC RV Ambiguity Mitigation, Status and Decision Briefing
      • NSSL Mitigation of RV Ambiguities: Strategies, current status, further development
      • NSSL Mitigation of RV Ambiguities: Analysis and Evaluation
      • NEXRAD RV Ambiguity Mitigation Progress at NCAR
      • ROC SIGMET / GMAP Evaluation
      • NSSL-ROC Technology Transfer MOU
      • OST-NSSL MOU
      • RV Ambiguity Mitigation for the Enhanced TDWR
      • OHD Range Correction Algorithm and Convective Stratiform Separation Algorithm
      • ORDA Update, including 0.25 km reflectivity and 0.5 degree sampling
      • ORDA High Resolution Data, 0.25km reflectivity, and 0.5 degree sampling
      • ORPG Build 5 and new VCP Status
      • Overview of Dual Polarization Weather Radar Applications
  • Fall 2004 Meeting, Indianapolis, IN
    • Agenda
    • Presentations
      • Map Location of Indianapolis FAA SMO
      • Indianapolis Center Weather Service Unit
      • ORDA Data Quality Assessment
      • Mesocyclone Detection Algorithm Nueral Network
      • NCAR Turbulence Detection Algorithm
      • VCPs 12 and 121 Usage
      • NEXRAD/MPE Precipitation Estimation
      • Flash Flood Forecasting over Complex Terrain
      • Dual Polarization Update
      • WSR-88D Operations WFO Northern Indiana