gov.noaa.ngdc.stp.ionosphere:G10009 eng; USA utf8 dataset Redmon, Robert DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce 303-497-4331 325 Broadway Boulder CO 80305-3328 USA ionosonde@noaa.gov 7:30-5:00 Mountain pointOfContact 2015-09-18 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) US-Total Electron Content Product (USTEC) 2006-04-01 publication NOAA National Centers for Environmental Information publisher DOC/NOAA/NWS/NCEP/SWPC > Space Weather Prediction Center, National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce Unknown NOAA/ National Weather Service National Centers for Environmental Prediction Space Weather Prediction Center, W/NP9 325 Broadway Boulder CO 80305 USA SWPC.CustomerSupport@noaa.gov originator http://www.swpc.noaa.gov/ustec/ http Real-time US-Total Electron Content: Vertical and Slant Vertical and Slant Total Electron Content, TEC uncertainty, Difference from 10-day average indicating recent trends and GPS stations used in calculation during each 15 minute period. information https://www.ngdc.noaa.gov/stp/iono/ustec/ http US Total Electron Content (Vertical and Slant) Product Archive Home page of USTEC Product Archive information The US Total Electron Content (US-TEC) product is designed to specify TEC over the Continental US (CONUS) in near real-time. The product uses a Kalman Filter data assimilation model, described in the Technical Documentation. This technique is driven by data from ground-based Global Positioning System (GPS) dual frequency receivers. The primary data stream comes from the Maritime and Nationwide Differential GPS (M/NDGPS) real time network of stations operated by the US Coast Guard (USCG). As of January 2006, there were about 130 stations ingested into the model. This number has been gradually increasing and will be augmented by Federal Aviation Administration/Wide Area Augmentation System (FAA/WAAS) data, and new stations in areas with poor coverage. This product has evolved through a collaboration between the Space Weather Prediction Center (SWPC), the National Geodetic Survey (NGS), the NOAA National Centers for Environmental Information (formerly National Geophysical Data Center), and the Global Systems Division (GSD). The product is designed for single and dual frequency GPS applications. The TEC and slant path maps can be used to estimate the GPS signal delay due to the ionospheric electron content between a receiver and a GPS satellite. Of particular interest to users is the link to Data files which provides not only tabular values of the total electron content, but also values of line-of-sight (LOS) or slant path electron content to each GPS satellite in view over the CONUS. For each GPS satellite in view the LOS maps provide 1 degree x1 degree two-dimensional grids over the CONUS. underDevelopment Redmon, Robert DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce 303-497-4331 325 Broadway Boulder CO 80305-3328 USA ionosonde@noaa.gov 7:30-5:00 Mountain pointOfContact daily Earth Science > Sun-Earth Interactions > Ionosphere/Magnetosphere Particles Earth Science > Sun-Earth Interactions > Solar Energetic Particle Properties > Total Electron Content theme NASA/GCMD Earth Science Keywords DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2020-01-09 publication 9.1 NASA Goddard Space Flight Center, Earth Science Data and Information System https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information custodian None otherRestrictions Use Constraints: none otherRestrictions Access Constraints: none eng; USA geoscientificInformation -150 -50 10 60 2004-10-14 http://www.swpc.noaa.gov/ustec/docs/USTEC_Doc.html Image files (Portable Network Graphics, PNG) 96 Vertical Total Electron Content files, 96 Uncertainty in TEC files, 96 Recent Trend files Daily Empirical Orthonomal Functions The EOFs define the background conditions at the beginning of each day. Produced once (1) per day. 1.0000 0.00001 TECU (10**16 electrons/m**2) TECU (10**16 electrons/m**2) Coefficients for the EOFs These coefficients will adjust the background conditions in function of the data ingested. Produced every 15 minutes (96 files). 10.0000 -10.0000 TECU (10**16 electrons/m**2) TECU (10**16 electrons/m**2) Vertical and Slant Data Values in Total Electron Content Numerical values of the vertical and slant TEC produced every 15 minutes (96 files). 100.0000 0.0000 TECU (10**16 electrons/m**2) ** 10 TECU (10**16 electrons/m**2) ** 10 TEC Trend Deviation of the Vertical TEC from the average of the most recent 10 previous days used in the total electron content assimilation. Produced every 15 minutes (96 files). 100.000 -100.0000 TECU (10**16 electrons/m**2) TECU (10**16 electrons/m**2) Uncertainty of the vertical TEC Expected error of the vertical TEC calculated as a function of the state error and the trend of the values. Produced every 15 minutes (96 files). 7.00 2.00 TECU (10**16 electrons/m**2) ** 10 TECU (10**16 electrons/m**2) ** 10 Stations used in TEC assimilation Data from different sources: CORS (Continuously Operating Reference Stations), GPS-MET (GPS-Meteorological), RTIGS (Real-Time International GNSS Services). Produced every 15 minutes (96 files). true ASCII PNG Plots Redmon, Robert DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce 303-497-4331 325 Broadway Boulder CO 80305-3328 USA ionosonde@noaa.gov 7:30-5:00 Mountain pointOfContact Free download availability http://www.swpc.noaa.gov/ustec/ http Real-time US-Total Electron Content: Vertical and Slant Vertical and Slant Total Electron Content, TEC uncertainty, Difference from 10-day average indicating recent trends and GPS stations used in calculation during each 15 minute period. information https://www.ngdc.noaa.gov/stp/iono/ustec/ http US Total Electron Content (Vertical and Slant) Product Archive Home page of USTEC Product Archive information https://www.ngdc.noaa.gov/stp/iono/ustec/products/ http Past US-Total Electron Content: Vertical and Slant Data Download past US Tec data download https://www.ngdc.noaa.gov/stp/iono/ustec/products/ http US-Total Electron Content: Vertical and Slant Search past Vertical and Slant Total Electron Content search http://www.swpc.noaa.gov/ustec/all_tec_plots.html http Real-time US-Total Electron Content: Vertical and Slant Real-time plots available for download download http://www.swpc.noaa.gov/ustec/text/ https://www.ngdc.noaa.gov/stp/iono/ustec/ https://www.ngdc.noaa.gov/stp/iono/ustec/products/ http://www.swpc.noaa.gov/ustec/all_tec_plots.html repository NOAA National Centers for Environmental Information NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015. 2015-04-22T00:00:00 annually This metadata was automatically generated from the Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata standard (version FGDC-STD-012-2002) using the 2012-08-08 version of the FGDC RSE to ISO 19115-2 transform. Translated from FGDC 2012-10-10T11:10:07.079-06:00 This record was automatically modified on 2015-09-18 to include references to NCEI where applicable. NOAA National Centers for Environmental Information Metadata Specialist editor Redmon, Robert DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, Department of Commerce 303-497-4331 325 Broadway Boulder CO 80305-3328 USA ionosonde@noaa.gov 7:30-5:00 Mountain pointOfContact Global Positioning System The TEC and slant path maps can be used to estimate the GPS signal delay due to the ionospheric electron content between a receiver and a GPS satellite GPS > Global Positioning System The U.S. Air Force of the Department of Defense developed, maintains, and operates the space and control segments of the GPS constellation. Full Operational Capability was declared by NAVSTAR in April 1995. United States Air Force sponsor