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Introd uction to Metadata

Introd uction to Metadata. presented by the NOAA National Coastal Data Development Center ( a Division of the National Oceanographic Data Center). Topics. Metadata 101 Geospatial Metadata Standards FGDC CSDGM ISO 19115 plus Reading Metadata Discovering Data with Metadata

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Introd uction to Metadata

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  1. Introduction to Metadata presented by the NOAA National Coastal Data Development Center (a Division of the National Oceanographic Data Center)

  2. Topics • Metadata 101 • Geospatial Metadata Standards • FGDC CSDGM • ISO 19115 plus • Reading Metadata • Discovering Data with Metadata • Metadata Resources

  3. Objectives Explain why metadata is important Discuss commonly used metadata standards Discuss different metadata functions Read CSDGM and ISO 19115-2 metadata Use a metadata catalog to find data Identify resources and methods for to use in developing metadata

  4. Terms We Will Use

  5. Topics • Metadata 101 • Geospatial Metadata Standards • FGDC CSDGM • ISO 19115 and related standards • Reading Metadata • Discovering Data with Metadata • Metadata Resources

  6. We often use “metadata” without even knowing it Examples?

  7. Thisis the “metadata” for this What’s Missing?

  8. This is the “metadata” for this. Author(s) Boullosa, Carmen. Title(s) They're cows, we're pigs / by Carmen Boullosa Place New York : Grove Press, 1997. Physical Descr viii, 180 p ; 22 cm. Subject(s) Pirates Caribbean Area Fiction. Format Fiction While the card-catalog entry is a form of metadata, it does not address topics such as quality, accuracy, or scale. Well-written geospatial metadata describes these and many more aspects of the data.

  9. a small part of This is the metadata for this. Identification_Information Citation Citation_Information Originator: NOAA Coastal Services Center Publication_Date: 19971131 Title: Hurricane Storm Surge Geospatial_Data_Presentation_Form: Map Publication_Information Publication_Place: Charleston, SC Publisher: NOAA Coastal Services Center Larger_Work_Citation Citation_Information

  10. This is a “catalog” for this Identification_Information Citation Citation_Information Originator: NOAA Coastal Services Center Publication_Date: 19971131 Title: Hurricane Storm Surge Geospatial_Data_Presentation_Form: Map Publication_Information Publication_Place: Charleston, SC Publisher: NOAA Coastal Services Center Larger_Work_Citation Citation_Information

  11. What is metadata?Metadata is information about data…

  12. Metadata is a component of data • Provides vital information about a dataset • Not a separate entity • Critical component of a complete dataset • Describes data characteristics • Content, condition, quality • Preserves data’s usefulness through time

  13. Is this data file usable?

  14. Metadata is the descriptive data component … RARNUM - unique combination of species, concentration, and seasonality CONC(concentration) = Density species is found at location Season_ID =seasonality code like to the seasonal table Element - Biology group Environmental Sensitivity Index Data Metadata

  15. Metadata updates reflect changes in the data … 1980 HEW Teheran British Honduras Cape Hatteras Light Mt. St. Helen West Germany 2005 HHS & HUD Tehran Belize Cape Hatteras Light Mt. St. Helen Germany

  16. Metadata serves many functions

  17. For data developers, metadata helps to….

  18. For organizations, metadata helps to…

  19. For data users, metadata helps to…

  20. Topics • Metadata 101 • Geospatial Metadata Standards • FGDC CSDGM • ISO 19115 and related standards • Reading Metadata • Discovering Data with Metadata • Metadata Resources

  21. Metadata Background: FGDC • The Federal Geographic Data Committee (FGDC) was organized in 1990 • Charged with promoting the coordinated use, sharing, and dissemination of national geospatial data • National Spatial Data Infrastructure (NSDI) • Tasked with creating a metadata standard to meet these objectives

  22. The FGDC Standard: CSDGM The Content Standard for Digital Geospatial Metadata "... each agency shall document all new geospatial data it collects or produces, either directly or indirectly, using the standard under development by the FGDC, and make that standardized documentation electronically accessible to the Clearinghouse network.“ Executive Order 12906 Signed by President Clinton (1994)

  23. FGDC: Recognizes Transition to ISO CSDGM will continue to have a legacy for many years International geospatial metadata standards are emerging in the community Agencies encouraged to transition to ISO as they are able to do so

  24. NOAA Data Management Policy • NOAA Administrative Order 212-15 • Environmental data will be visible, accessible and independently understandable to users… • Management of NOAA environmental data will be based upon an end-to-end data management lifecycle… • … approved Procedural Directives inherit the requirements and authority of this policy…

  25. NOAA EDMC Directives NOAA EDMC Data Documentation Directive Outlines Migration to ISO Standards • Documentation of… • Collections • Datasets • Services

  26. Metadata Standards Process step Access constraints entity currentness domain attribute Citation Domain=Real attribute currentness Citation entity lineage Type=“free text” lineage Provide a uniform summary dataset description • Utilize common • Terms • Language • Structure • Defines data elements & values

  27. FGDC Authored vs Endorsed Standards

  28. FGDC Authored Standards will soon be legacy • FGDC-STD-001-1998 Content Standard for Digital Geospatial Metadata (CSDGM) • FGDC-STD-001.1-1999 Biological Data Profile • FGDC-STD-001.2-2001 Shoreline Profile • FGDC-STD-012-2002 Extensions for Remote Sensing Metadata (RSE)

  29. FGDC Endorsed Standards same status as FGDC authored • ISO 19110:2005 Geographic information - Methodology for Feature Cataloguing • ISO 19111:2007 Geographic information – Spatial referencing by coordinates • ISO 19115:2003 Geographic information – Metadata • ISO 19115-2:2009 Geographic information – Metadata – Part 2: Extensions for imagery and gridded data • ISO 19119:2005 Geographic information – Services • ISO 19139:2007 Geographic information – Metadata – XML schema implementation

  30. Topics • Metadata 101 • Geospatial Metadata Standards • FGDC CSDGM • ISO 19115 plus • Reading Metadata • Discovering Data with Metadata • Metadata Resources

  31. Text version of CSDGM record

  32. XML Version of CSDGM record

  33. HTML view of CSDGM record

  34. Hands-On Exercise Reading a CSDGM Metadata Record

  35. Example CSDGM Metadata Record Navigate to this web page: • http://www.ncddc.noaa.gov/hypoxia/products/ Select Tab for 2012 – 2010 Maps and Data • Select Metadata for CTD Locations • Answer questions about dataset using this metadata record Or, direct link: http://service.ncddc.noaa.gov/rdn/www/media/documents/hypoxia/metadata/2012-Hypoxia-Stations.html

  36. Answer these Questions… What is the format of the data? What is the date of the data? How often is the data set updated? Where is the data? What’s the data about? Who can I contact to get the data? Is the data available online? Was any processing done to the data? Do I need any special software to use the data?

  37. Production Rules of the FGDC CSDGM

  38. CSDGM Metadata Workbook • Defines the CSDGM • Section and element definitions • Domain values Graphical representation of the CSDGM production rules • How elements are grouped • Mandatory elements • Rules for repeatable elements

  39. CSDGM Graphic Representation Metadata 1 2 3 4 5 6 7 Identification Information Spatial Reference Information Entity and Attribute Information Distribution Information Metadata Reference Information Data Quality Information Spatial Data Organization Information Legend Mandatory Mandatory If Applicable

  40. Section 8 Section 9 Section 10 Citation Information Time Period Information Contact Information M M / A O

  41. Metadata Moving Forward Transitioning to ISO

  42. ISO Background We are still capturing the same information! • The ISO 19115 strongly resembles the ‘sections’ of the CSDGM • Documents the geographic data -OR –service • Identification • Spatial Reference • Data Quality • Distribution

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