Metadata Catalog Export

Metadata Catalog Export:
Contact: John Allison - 


The THREDDS (Thematic Realtime Environmental Distributed Data Services) project is developing middleware to bridge the gap between data providers and data users. The goal is to simplify the discovery and use of scientific data and to allow scientific publications and educational materials to reference scientific data. The mission of THREDDS is for students, educators and researchers to publish, contribute, find, and interact with data relating to the Earth system in a convenient, effective, and integrated fashion. Just as the World Wide Web and digital-library technologies have simplified the process of publishing and accessing multimedia documents, THREDDS is building infrastructure needed for publishing and accessing scientific data in a similarly convenient fashion.

» EOL Contact:John Allison -

» External Contact: Ethan Davis (Unidata)

» Additional information is availiable on the THREDDS home page


ISO 19115:

This work aims to establish a structured set of standards for information concerning objects or phenomena that are directly or indirectly associated with a location relative to the Earth.

These standards may specify, for geographic information, methods, tools and services for data management (including definition and description), acquiring, processing, analyzing, accessing, presenting and transferring such data in digital/electronic form between different users, systems and locations.

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ISO 19115/TC 211 Geographic Information/Geomatics Metadata Standard

Olaf Ostensen

Greg Stossmeister -


GCMD's goal is to enable users to locate and obtain access to Earth science data sets and services relevant to the global change and Earth science research.

The metadata used by the GCMD is considered to be that set of attributes that are instrumental in helping users to determine if a data set meets their qualifications. The set of attributes (fields) and its associated syntax is known as the Directory Interchange Format (DIF) . It has evolved over a twelve year period and serves the user community in the discovery of Earth science data.

» External Contact

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GCMD Home Page
GCMD Service Entry Resource Format (SERF) Writer's guide Directory Interchange Format (DIF) Writer's Guide

Lola Olsen
GCMD Project Manager

Greg Stossmeister -

RSS Feeds:

RSS (Really Simple Syndication): Any of various XML file formats suitable for disseminating real-time information via subscription on the Internet. RSS could be used by the VOC for project news items or mission changes, new datasets which have arrived in the catalog, etc.

» EOL Contact: Greg Stossmeister -


XML( Extensible Markup Language): A metalanguage written in SGML (see below) that allows one to design a markup language, used to allow for the easy interchange of documents and metadata on the World Wide Web. Standard Generalized Markup Language is a set of standards, approved by the ISO, enabling a user to create an appropriate markup scheme for tagging the elements of an electronic document, as to facilitate the production of multiple versions in various print and electronic formats.

XML will provide linkage to digital libraries, federation of NSF & other agency data portals, and other uses as development occurs.

» EOL Contact: Greg Stossmeister -