THREDDS (Thematic Realtime Environmental Distributed Data Services)
The THREDDS Data Server (TDS) is a web server that provides metadata and data access for scientific datasets, using OPeNDAP, OGC WMS and WCS, HTTP, and other remote data access protocols.
TDS is developed and supported by Unidata, a division of the University Corporation for Atmospheric Research (UCAR), and is sponsored by the National Science Foundation (NSF).
Bridge the gap between data providers and data users by: a) simplifying the discovery and access of scientific data and, b) allowing scientific publications and educational materials to reference scientific data.
The THREDDS Data Server includes an XML* representation for documenting catalogs and datasets included in them. This is the dialect considered here.
* XML (Extensible Markup Language) defines a set of rules for encoding documents in a format which is both human-readable and machine-readable. Although the design of XML focuses on documents, it is widely used for representation of arbitrary data structures - such as those used in web services.
Page - Metadata Dialects