International Forum for Space Weather Capabilities Assessment

Forum Home | Working Teams & Topics |  Overall Goals and Deliverables  | Sign Up | FAQ |  ICCMC-LWS Working Meeting & Presentations 
Global & Regional TEC Working Team

Related Links | Frequently Asked Questions | Community Feedback | Downloads | Sitemap
CCMC Home | CCMC Stakeholders | Our Team | Publications | Meetings and Workshops | Concept of Operations
Models At A Glance | ModelWeb Catalog and Archive
Request Procedures | Generate Input Data Files & Parameters | Movies on Request | About the Run Process | Publications Policy
Search run database | Request run output | Special events | Kameleon Software | Space Weather Explorer | Publications policy
Instant Model Run
Forecasting Support tools | iSWA | DONKI | Mission Support | Experimental Real Time Simulations | Operational Geospace Model Validations
Intl Forum | GEM Challenge | CEDAR ETI Challenge | GEM-CEDAR Challenge | SHINE Challenge | CME Arrival Time Scoreboard | Flare Scoreboard | SEP Scoreboard | IMF Bz Scoreboard
Educational materials &activities | Space Weather REDI Initiative | SW REDI Bootcamp | Student Research Contest | Tutorial at CEDAR | Forecaster Tools
Missions near Earth/in Earth-orbit | MMS | Van Allen Probes | THEMIS | MESSENGER | STEREO | Spitzer | MAVEN | MSL | Dawn | Kepler | EPOXI | Juno | CASSINI | Voyager | New Horizons | Sounding Rockets | International
Research Community Support | CCMC Workshops | NASA Robotic Mission Operator Workshops | LWS Support | Exo-CCMC | DREAM2 Support | HELCATS Support
iSWA | DONKI | Kameleon | StereoCat | EEGGL | CME Scoreboard | SEP Scoreboard | FLR Scoreboard | SEA5

Global & Regional TEC Working Team

Team Leads: L. Scherliess* (Primary lead, USU) (email team leads to be added to the team)

Participants and Followers: List of participants and followers (as of November 2, 2017)
Communications: (mailing list)

Latest News
Summary of ionosphere working team discussions at April 2017 working meeting
Presentations and Discussions from the 2017 working meeting

User Needs

  • Effects of the ionosphere on GPS positioning application:
    Position Error for GNSS Users (Errors in TEC affect single frequency GNSS positioning)

Working Team Goals

  • Establish metrics agreed upon by the community
  • Evaluate where we stand with atmospheric density prediction
  • Provide a benchmark against which future models can be assessed against

Challenges to address

  • Uncertainty in observations and models
  • Metrics for specific applications
  • Ground truth for evaluations of data assimilation models

Lessons learned from previous assessments of TEC prediction

  • Difference in vTEC between different data sources
  • Difference in range for TEC calculations between models and data sets
  • 1-day quiet time values are not enough as a quiet time reference to quantify storm impact
  • Lack of user input in defining appropriate metrics for specific applications

Working Team Deliverables

Physical Quantities and Metrics for Model-Data Comparison

  • vertical TEC, slant TEC
  • TEC gradients
  • RMSE, NRMSE, and Ratio of the modeled to observed maximum increase

Available Data Sources

  • TEC measurements from the global network of GNSS ground receivers

Participating Models
Please contact the team leads for additional model suggestions

List of Time Intervals
Proposed time intervals

Resources and Past Progress
Presentations from previous assessments of TEC prediction
Runs for metric studies performed at the CCMC
CEDAR-ETI and GEM Challenge Events (draft)
GEM-CEDAR Challenge Events (draft)

<< Return to the forum homepage

National Aeronautics and Space Administration Air Force Materiel Command Air Force Office of Scientific Research Air Force Research Laboratory Air Force Weather Agency NOAA Space Environment Center National Science Foundation Office of Naval Research

| | Privacy, Security Notices | CCMC DATA Collection Consent Agreement

CCMC logo designed by artist Nana Bagdavadze