2.6.0 spase://ISWI/NumericalData/GIRO/CHARS/PT15M GIRO Ionogram-Derived Ionospheric Characteristics 2018-06-28T22:02:01Z 2023-07-28T12:30:53 Edited Acknowledgement, AccessURL, InformationURL, and URL in Description, added Contact and updated SPASE version. LNG 2024-05-03T00:00:00 Moved GBO to ISWI plus update revisionhistory, SAB 2024-06-03T00:00:00 Fixed Instrument URL, SAB Standard ionogram-derived characteristics obtained by Global Ionospheric Radio Observatory (GIRO) operated by University of Massachusetts Lowell. The list of standard URSI characteristics that can be derived from ionograms can be found in the SAO.XML Data Model Specification for standard ionosonde data exchange, Appendix C, https://ulcar.uml.edu/SAOXML/. In order to request the characteristics values from GIRO, it is necessary to call DIDBGetValues() servlet at GIRO server using standard HTTP call that returns a text document. The values in the document are calculated using automatic or manual interpretation of ionogram images. Each measurement is accompanied by a confidence score value (from 0 to 100, 100 is best autoscaled confidence or data obtained manually) and a set of two QD letters (qualitative and descriptive letters per URSI ionogram interpretation manual). When QD letters are set to //, reported value is obtained automatically, all other combinations of the letters correspond to manual scaling. Heavy investments of time, effort, expertise, and funds continue to be made to produce, collect, quality control, interpret, and archive ionosonde data. It is therefore important that the data suppliers and Lowell GIRO Data Center (LGDC) are appropriately acknowledged in scientific publications that include analysis of data obtained from LGDC servers. Please read Rules of the Road https://giro.uml.edu/didbase/RulesOfTheRoad.html for license information and refer to Acknowledgements List https://giro.uml.edu/didbase/acknowledgements.htm to use GIRO data per license requirements. spase://SMWG/Person/Bodo.W.Reinisch PrincipalInvestigator spase://SMWG/Person/Ivan.A.Galkin DataProducer TechnicalContact spase://SMWG/Person/Leonard.N.Garcia MetadataContact GIRO (Global Ionospheric Radio Observatory) Home Page https://giro.uml.edu Access to real-time data and software tools en spase://ISWI/DisplayData/GIRO/GRM/PT15M DerivedFrom spase://VWO/NumericalData/GIRO/CHARS.PT15M spase://VSPO/NumericalData/GIRO/CHARS/PT15M spase://SMWG/Repository/UML/DIDBase Online Open GIRO access to ionogram-derived ionospheric characteristics https://giro.uml.edu/didbase/scaled.php GIRO webpage that accesses DIDBase repository and retrieves the list of characteristics. en Text.ASCII ASCII Heavy investments of time, effort, expertise, and funds continue to be made to produce, collect, quality control, interpret, and archive ionosonde data. It is therefore important that the data suppliers and Lowell GIRO Data Center (LGDC) are appropriately acknowledged in scientific publications that include analysis of data obtained from LGDC servers. Please read Rules of the Road https://giro.uml.edu/didbase/RulesOfTheRoad.html for license information and refer to Acknowledgements List https://giro.uml.edu/didbase/acknowledgements.htm to use GIRO data per license requirements. Calibrated Ionogram-scaled ionospheric characteristics in physical units. spase://ISWI/Instrument/GIRO/Ionosonde Waves.Active 1987-01-01T00:00:05Z PT5M Cadence of ionogram measurements may vary depending on the scheduling requirements at GIRO sites; 15 minutes is nominal cadence PT15M PT1M RadioFrequency Earth.NearSurface.Ionosphere Data coverage is varying among different GIRO instrument locations Ionogram Ionospheric Characteristics