2.2.2 spase://SMWG/Repository/UML/DIDBase Digital Ionogram Database Repository at UML 2019-05-05T12:34:56Z The DIDBase repository at University of Massachusetts Lowell is a relational database holding raw ionogram data and ionogram-derived ionospheric characteristics for the Global Ionospheric Radio Observatory (GIRO). Public access to the DIDBase resource is arranged via SAO Explorer software available at http://umlcar.uml.edu/SAO-X/ and web access portal http://umlcar.uml.edu/DIDBase/ spase://SMWG/Person/Ivan.A.Galkin ArchiveSpecialist MetadataContact ProjectScientist spase://SMWG/Person/Bodo.W.Reinisch PrincipalInvestigator Web page https://ulcar.uml.edu/DIDBase/ Web access portal for DIDBase Web page https://ulcar.uml.edu/DIDBase/ Web access portal for DIDBase