Public Information Statement
Issued by NWS National HQ
Issued by NWS National HQ
763 NOUS41 KWBC 231350 PNSWSH Public Information Statement 24-57 National Weather Service Headquarters Silver Spring MD 950 AM EDT Fri Aug 23 2024 To: Subscribers: -NOAA Weather Wire Service -Emergency Managers Weather Information Network -NOAAPort Other NWS Partners, Users and Employees From: Bruce Entwistle, Chief Aviation and Space Weather Services Branch Subject: Soliciting Comments through September 23, 2024 on the Experimental Deployment of the Global Total Electron Content (GloTEC) Ionosphere Model Through September 23, 2024, the National Weather Service (NWS) Space Weather Prediction Center (SWPC) in Boulder, CO, is soliciting comments on the Experimental Deployment of the Global Total Electron Content (GloTEC) ionosphere model, located at: https://www.swpc.noaa.gov/experimental/glotec The current operational products of North America Total Electron Content (NATEC) ionosphere model and US Total Electron Content (USTEC) are no longer being supported and will be replaced by GloTEC. NATEC and USTEC pages can be found here: https://www.swpc.noaa.gov/products/north-american-total- electron-content https://www.swpc.noaa.gov/products/north-american-total- electron-content-us-region The Total Electron Content (TEC), TEC uncertainty, TEC recent trend, and empirical orthogonal function (EOF) products provided by the legacy NATEC and USTEC have been discontinued. GloTEC will produce an equivalent set of image products, daily animations, and a global TEC data product available in a daily NetCDF file, which is appended every 10 minutes. A file in ASCII GeoJSON format that contains TEC values will also be provided in the same cadence. Global TEC is provided on a 2.5 degree latitude by 5 degree longitude grid. Additional information can be found in the Data tab on the experimental GloTEC page. Data are accessible at this link: https://services.swpc.noaa.gov/experimental/products/glotec/ The GloTEC ionosphere model was developed in-house at SWPC. It is a real-time data assimilation system based on the Gauss- Markov Kalman Filter. It ingests ground-based and space-based slant TEC measurements to estimate 3-dimensional electron density. The electron density is integrated vertically to produce TEC products for the Continental United States, North America, and the globe. For more information about the GloTEC model, review the product description document at this link: https://nsdesk.servicenowservices.com/api/g_noa/nwspc/res2/99e56 f5397cc16508881bb7de053af9e Input on the GloTEC model can be provided to: Tzu-Wei Fang GloTEC Project Lead NOAA Space Weather Prediction Center Boulder, CO Email: tzu-wei.fang@noaa.gov and Dominic Fuller-Rowell GloTEC Developer NOAA Space Weather Prediction Center University of Colorado, Boulder CIRES Email: dominic.fuller-rowell@noaa.gov National Public Information Statements are online at: https://www.weather.gov/notification/