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NASA's

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titleCommon Metadata Repository (CMR) Overview
The

Common Metadata Repository (CMR) is a high-performance, high-quality, continuously evolving metadata system that catalogs all data and service metadata records for

the EOSDIS system

NASA's Earth Science Data and Information System (ESDIS) and will be the authoritative management system for all EOSDIS metadata.

 These

These metadata records are registered, modified, discovered, and accessed through programmatic interfaces leveraging standard protocols and APIs.

CMR is designed:

  • to serve as a middleware replacement for the ECHO and GCMD’s backend. Note: Users of GCMD should see no impact - asThe GCMD frontend will remain as is.
  • to handle metadata at the Concept level; including Collections, Granules, Visualizations, Parameters, Documentation, Services, and more.
  • to manage hundreds of millions of metadata records; making them available through high performance, standards compliant, temporal, spatial, and faceted search.
  • to incorporate both human and machine metadata assessment features that work to ensure the highest quality metadata possible
  • around an evolvable Unified Metadata Model (UMM).
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titleUnified Metadata Model (UMM)
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The Unified Metadata Model is a model that encompasses various metadata profiles maintained and archived by EOSDIS. The UMM will be used by the Common Metadata Repository and will drive search and retrieval of metadata cataloged within that system.

The UMM is managed as a series of documents, each covering a subset of the entire UMM. An overview of the UMM and the UMM documents are provided on the UMM Documents page.

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titleCMR/UMM Links
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  • CMR Documents
  • UMM Documents
  • API Documentation
  • CMR Client Developer Information
  • CMR Metadata Provider Information
  • CMR Team Activities

     

     

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    titleCMR Metadata Reconciliation

    Data Provider Metadata Reconciliation

     

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    ...

    For more information on the CMR, please see the CMR Earthdata Homepage.



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    titleCMR Search

    CMR Search API Documentation

    CMR Search Site Documentation

    CMR Client Partner User Guide

    For more information, see https://cmr.earthdata.nasa.gov/search


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    titleUnified Metadata Models (UMM)

    UMM - Collections (UMM-C)

    UMM - Granules (UMM-G)

    UMM - Services (UMM-S)

    UMM - Variables (UMM-Var)

    UMM - Tools (UMM-T)

    For more information, see UMM Documents


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    titleCMR Support

    Questions, comments, technical issues, and change requests should be sent to: support@earthdata.nasa.gov




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    titleCMR Ingest

    CMR Ingest API Documentation

    CMR Data Partner User User Guide

    CMR Harvesting Best Practices

    Onboarding Process for a New CMR Provider

    For more information, see https://cmr.earthdata.nasa.gov/ingest/


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    titleOther Documentation/Related Work

    CMR Git Repository

    CMR Requirements Authoring Guide

    CMR Life-Cycle

    CMR Workload Specification

    EED-2 Open Sourcing Guide

    ESO-CMR Reviews 

    Earthdata Search Client

    GCMD Keyword Landing Page


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    titleInformation About Working With This Wiki


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    titleInformation about working with this wiki:


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    Purpose of the Wiki

    This wiki is intended strictly for the use of sharing information about NASA Earth Science Data and Information System (ESDIS) topics. For more information please click here .

    We welcome your participation and comments within Earthdata Wiki.

    Rules of Conduct

    Earthdata Wiki is governed by the general rules of respectful civil discussion. ESDIS may monitor any user-generated content as it chooses and reserves the right to remove content for any reason whatsoever, without consent. The following rules of conduct are to be followed when using the Earthdata Wiki. Breach of these rules will result in users loses privileges or being banned permanently.

    Participation requires a valid Earthdata Login. Only approved NASA users and affiliates will be allowed to upload data. If a wiki space becomes dormant for a period of more than 2 years, ESDIS reserves the right to delete/remove it.

    In order to maintain an environment where everyone is welcome and discussion flows freely, certain types of conduct are prohibited on Earthdata Wiki. Specifically restricted conduct includes trolling, flaming, ranting, personal attacks, harassment, threats, doxing, racism, discrimination, hate speech, sexism, spamming, off-topic posting, pyramid quoting, rumor mongering, impersonation, advertising (including HTML links and pictures), and linking to applications or utilities of uncertain intent.

    In addition, the Earthdata Wiki is not for discussion of real-life current affairs, news, politics, or religion. Discussion should revolve around ESDIS topics. Specific content prohibited on Earthdata Wiki includes pornography, profanity, and real money trading (RMT).


    NASA makes no representations or warranties regarding the information posted.





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    titleRestricted Access

    CMR Operations

    CMR JIRA Project

    Jama

    Metrics

    Internal Team Documents