gov.noaa.ngdc.stp.terrestrial:G10019 eng; USA utf8 series NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact 2023-09-14 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Archive of NOAA Continuously Operating Reference Stations (CORS) Network (NCN) 1994-04-22 publication gov.noaa.ngdc.stp.terrestrial:G10019 gov.noaa.class:CORS International DOI Foundation (IDF) 10.25921/wc4r-ee36 NOAA National Centers for Environmental Information NCEI Metadata ID: gov.noaa.ngdc.stp.terrestrial:G10019 NOAA National Centers for Environmental Information publisher NOAA National Geodetic Survey (NGS) author The National Geodetic Survey's (NGS) NOAA Continuously Operating Reference Stations (CORS) Network (NCN) provides Global Navigation Satellite System (GNSS) data consisting of carrier phase and code range measurements in support of three dimensional positioning, meteorology, space weather, and geophysical applications throughout the United States, its territories, and a few foreign countries. Surveyors, GIS users, engineers, scientists, and the public at large that collect GPS data can use CORS data to improve the precision of their positions. CORS enhanced post-processed coordinates approach a few centimeters relative to the National Spatial Reference System (NSRS), both horizontally and vertically. The CORS network is a multi-purpose cooperative endeavor involving government, academic, and private organizations. The sites are independently owned and operated. Each agency shares their data with NGS, and NGS in turn analyzes and distributes the data free of charge. The CORS data set enables users to attain centimeter-level positioning for points of interest and can be used to measure crustal motion, moisture content for the lower atmosphere, and total electronic content in the upper atmosphere. NGS publishes coordinates for CORS in several reference frames. This includes the current global reference frame from the International GNSS Service (IGS), and with respect to the National Spatial Reference System (NSRS) realizations of the North American Datum of 1983 (NAD 83) as defined by NGS. NGS coordinates a network of CORS stations from approximately 200 organizations such as federal, state, and local governments, academia, the private sector, and international groups. ongoing NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact Francine Coloma (303) 497-3692 325 Broadway St Boulder CO 80027 USA ngs.cors@noaa.gov 9:00 - 4:00 Mountain pointOfContact daily https://www.ngdc.noaa.gov/image/cors_main765x320.jpg NCEI Archive of NGS CORS data EARTH SCIENCE > Solid Earth > Geodetics EARTH SCIENCE > Solid Earth > Geodetics > Coordinate Reference Systems EARTH SCIENCE > Solid Earth > Geodetics > Coordinate Reference Systems > Country/Regional Coordinate Reference System EARTH SCIENCE > Solid Earth > Geodetics > Coordinate Reference Systems > Global Coordinate Reference System EARTH SCIENCE > Solid Earth > Geodetics > Ellipsoid Characteristics EARTH SCIENCE > Solid Earth > Geodetics > Geoid Characteristics EARTH SCIENCE > Solid Earth > Geodetics > Control Surveys EARTH SCIENCE > Solid Earth > Geodetics > Crustal Motion EARTH SCIENCE > Solid Earth > Geomorphic Landforms/Processes EARTH SCIENCE > Solid Earth > Gravity/Gravitational Field theme Global Change Master Directory (GCMD) Science Keywords 2024 revision 19 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian NOAA > National Geodetic Survey (NGS) > Continuously Operating Reference Station (CORS) project Global Change Master Directory (GCMD) Project Keywords 2020-01-09 publication 9.1 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian GPS > Global Positioning System Satellites NAVSTAR > NAVSTAR Global Positioning System GLONASS > GLObalnaya NAvigatsionnaya Sputnikovaya Sistema GNSS > Global Navigation Satellite System platform Global Change Master Directory (GCMD) Platform Keywords 2020-01-09 publication 9.1 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Earth Remote Sensing Instruments > Passive Remote Sensing > Positioning/Navigation > GPS > GPS Receivers Earth Remote Sensing Instruments > Passive Remote Sensing > Positioning/Navigation > GPS > GNSS Receivers instrument Global Change Master Directory (GCMD) Instrument Keywords 2020-01-09 publication 9.1 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian 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 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Geodetic/Global Positioning theme NOS Data Explorer Themes United States place Getty Thesaurus of Geographic Names 2011-04-11 revision Getty Research Institute 1200 Getty Center Drive, Suite 1100 Los Angeles California 90049-1688 United States TGN@getty.edu http://www.getty.edu/research/tools/vocabularies/tgn/index.html Getty Thesaurus of Geographic Names Online Page This page provides an interface to search the Getty Thesaurus of Geographic Names. information custodian CORS CORDLYHLOG CORDLYLOG CORDLYMET CCORDLYNAV CORDLYOBS CORGNSS CORSRAW product NOAA CLASS Datatype Information gov.noaa.class:CORS other While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. These data are considered raw and have not been subjected to the NOAA's quality control or quality assurance procedures. They are released for limited public use as preliminary data to be used only with appropriate caution. NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. otherRestrictions Cite as: NOAA National Geodetic Survey (NGS). 1994. NOAA Archive of NGS National Continuously Operating Reference Station (CORS) Network (NCN) [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/wc4r-ee36. Accessed [date]. Continuously Operating Reference Station (CORS) NOAA NOS National Geodetic Survey {{codeListValue}} https://www.ngs.noaa.gov/CORS/ https National Geodectic Survey - Continuously Operating Reference Stations (CORS) Home page for CORS main facility in Silver Spring, MD information crossReference Continuously Operating Reference Station (CORS) Coordinate Update Policy 2011-12-20 publication http://geodesy.noaa.gov/INFO/Policy/CORS-coordinate-policyv4_20Dec2011.pdf Reference frames are updated periodically according to the policy. information crossReference eng; USA geoscientificInformation location CORS data is collected throughout the United States, its territories, and a few foreign countries. -180.00 180.00 -90.00 90.00 1994-02-01 The United States operates the Global Positioning System (GPS). The term Global Navigation Satellite Systems (GNSS) has been created to reference all navigation satellite systems. GNSS encompasses the U.S. GPS system, the Russian Federation GLONASS system, and any future systems such as Europe's Galileo or China's Compass. referenceInformation Latitude Real Latitude is measured from the equator, with positive values going north and negative values going south 90 -90 1 referenceInformation Longitude Real Longitude is measured from the Prime Meridian (which is the longitude that runs through Greenwich, England), with positive values going east and negative values going west 180 -180 1 physicalMeasurement Orthometric height (m) Real Distance along a plumb line, from the geoid to a point. The plumb line is a line regarded as directed exactly toward the earth's center of gravity. The geoid is the equipotential surface of the Earth's gravity field which best fits, in a least squares sense, global mean sea level. 10000 -50 1 physicalMeasurement Ellipsoid or geodetic height (m) Real Distance along ellipsoid normal, from ellipsoid to a point. Due to rotation, the earth assumes the shape of a sphere that is flattened at the poles and bulging at the equator (an ellipse). Cartesian coordinates have their origin at the center of ellipsoid. 10000 -5000 1 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. ASCII 2.11 Receiver Independent Exchange Format (RINEX) GNU zip compression (gzip) binary Binary data from receiver manufacturer. Note that binary data from the Federal Aviation Administration's Wide Area Augmentation System (FAA WAAS) has been translated from the manufacturer binary by the FAA into the FAA binary format called National Satellite TestBed (NSTB). GNU zip compression (gzip), tar file format package https://doi.org/10.25921/wc4r-ee36 HTTPS Metadata Landing Page information https://www.class.noaa.gov/saa/products/search?sub_id=0&datatype_family=CORS https web browser CLASS Data Search and Order Search the CORS data archive and submit an order for the dataset via the interface. order series Horizontal Positional Accuracy Report The horizontal coordinates of the GPS site, specifically the GPS antenna location, are accurate to about a meter once biases are removed. Vertical Positional Accuracy Report The vertical coordinates of the GPS site, specifically the GPS antenna location, are accurate to about 2 centimeters once biases are removed. Data written to the NCEI archive is reviewed for completeness. Automated routines perform daily checks for file names and file sizes, and also aided by the internal checksum of GNU zip compression as data is written to tape. Any faulty data is removed from the archive. To become part of the CORS network, each site must pass through NGS' site criteria standards and maintain its integrity. Automated routines at NCEI pull data staged by NGS at regular intervals. GNSS observational data from the CORS network are ingested, translated, and processed by NGS and are posted to the NGS online servers as hourly or daily files, and ultimately retained as daily files in RINEX format. After 30 days, data in the at-sampling rate is copied to the NCEI archive, and NGS online holdings are then decimated to a 30-second sampling rate. Special use case: Certain groups such as the Federal Aviation Administration, make GNSS data available in binary format to NGS. These data are used as input to algorithms for internal NOAA models such as the US-Total Electron Content product. The Data Center, not NGS, has decided to archive the raw data from these stations as a daily tar file consisting of hourly binary files INGEST: NGS has automated daily routines that harvests daily observational files in either binary or RINEX format at the original sampling rate, the daily broadcast ephemeris files, orbit files, and any corresponding meteorological files. For the special case use of FAA and USCG streaming data that are used as input to NOAA models, the streaming feed is harvested to a binary, incrementally-built hourly file. 1994-02-01T00:00:00 NOAA National Geodetic Survey processor PROCESSING: Data ingested by NGS are processed into RINEX format and made available online in either an hourly or daily cadence. Aside from positioning, processing includes the insertion of NGS headers, quality checks, and the production of quality control files (teqc summary files). Other scheduled routines retrieve higher level orbit files as they are made available. 1994-02-01T00:00:00 NOAA National Geodetic Survey processor DISTRIBUTION: NGS makes hourly and daily files available online. For the special case of binary FAA and USCG data, NGS pushes these files to the Data Center every 5 minutes. The Data Center stages the data for internal NOAA groups, who harvests the data at a predetermined sub-hourly period as input to their algorithms. The completed binary hourly file at the Data Center is kept locally. At the end of the day, a daily tar file consisting of the hourly data are created and staged for archive. 1994-02-01T00:00:00 NOAA National Geodetic Survey processor RETENTION: NGS retains the data at the original at-sampling rate for 30 days. After 30 days, NGS decimates its online holdings to a 30-second sampling rate. 1994-02-01T00:00:00 NOAA National Geodetic Survey processor ARCHIVE: Prior to the 30-day mark, the RINEX at-sampling rate data is copied to NCEI. Aftter 30 days, NCEI then stages, archives, and distributes the CORS data via the CLASS infrasturcture. For the special use case, the daily binary files from 4 days ago are archived by NCEI to CLASS. 1994-02-01T00:00:00 NOAA National Centers for Environmental Information CORS Data Manager processor Source Contribution: GNSS observational data in RINEX format and binary format, orbit data, and meteorological data (when available). Source Type: digital files via FTP 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 asNeeded Earth Remote Sensing Instruments > Passive Remote Sensing > Positioning/Navigation > GPS Positioning/Navigation 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 GLONASS > GLObalnaya NAvigatsionnaya Sputnikovaya Sistema Russian Federation Aerospace Defense Forces developed, maintains, and operates the space and control segments of the GLONASS constellation. Russian Federation Aerospace Defense Forces sponsor