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Information System and Data Center for Earth Observation Data

Information System and Data Center for Earth Observation Data. The Electronic Geophysical Year. Bernd Ritschel, GFZ Potsdam, Data Center rit@gfz-potsdam.de. ISDC collaboration projects. CHAMP and GRACE satellite missions

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Information System and Data Center for Earth Observation Data

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  1. Information System and Data Centerfor Earth Observation Data The Electronic Geophysical Year Bernd Ritschel, GFZ Potsdam, Data Center rit@gfz-potsdam.de CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  2. ISDC collaboration projects • CHAMP and GRACE satellite missions Orbit/Gravity + Magnetic/Electric Field + Atmosphere data • GGP (Global Geodynamic Project) Superconducting Gravimeter + auxiliary data • GNSS (Galileo testbed phase 1 project) GFZ Potsdam GPS ground stationdata • GPS-PDR (Potsdam-Dresden-Reprocessing) GPS Orbit +Earth rotation parameterdata CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  3. ISDC collaboration projects • GGSP (Galileo Geodetic Service Provider) GPS time series, orbit, ERP, SLR, auxiliary data • TerraSAR-X Orbit + Atmosphere/Ionosphere data • ICGEM (International Centre for Global Earth Models) Global Earth gravity models • GGOS (Global Geodetic Observing System) CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  4. ISDC portal homepage:isdc.gfz-potsdam.de CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  5. ISDC portal – Product types:isdc.gfz-potsdam.de/product_types CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  6. Number and volume of data • 275 different product types from different geoscience domains • 92 product types for public use • 4 product types with extended rights for specific science team members • 183 product types for internal use only • > 10 Terra Byte of data • > 12 Million products • > 1500 national and international users and user groups • 14 data provider (scientific groups) GFZ + NASA CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  7. ISDC user - country graph CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  8. User Development graph User development (2007-05-04) 1471 users and user groups CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  9. Product data flow Number of data files flow (2007-05-04) CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  10. ISDC architecture schema Provider User ISDC ISDC CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  11. ISDC main system components deployment CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  12. Data pump Producer User Meta data ISDC Metadata Standard = Parent DIF (V. 9.x) + Extended Child DIF(s)* http://gcmd.nasa.gov/User/difguide/difman.html *in preparation CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  13. ISDC data lifecycle management (1) • ISDC product philosophy (product = metadata + data) • Providing the input of data via proprietary FTP directories (GFZ-intern + extern) for data providers • Ensuring the sustainability of data by • Long-term archiving (storage of original data set + copy) • Online Product Archive (OPA) • Filling and maintaining the ISDC clearinghouse = product catalog CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  14. ISDC data lifecycle management (2) • GUI and API for product retrieval • Product type dependent retrieval forms • Product browser • Product request list file for bulk requests • Providing the output of data and metadata by proprietary FTP directories (GFZ-intern + extern) for each user • Personalization (favorites, Really Simple Syndication [RSS] feeds, notification mail configuration) • User management, user forum, monitoring components, … CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  15. ISDC data lifecycle management (3) Missing tasks: • Harmonization of data • Tailoring of data • Merging of data • Aggregation of data • Delete of data • Prediction data • Semi-finished products • Back up files Science driven data review process is necessary => Enhancement of data interoperability => Providing data for other scientific domains => Keeping the operational status CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  16. Recent activities (1) • Preparing the TerraSAR-X data management • Improving metadata (management) interoperability • Using and developing the Directory Interchange Format Standard Version 9.x • Changing from ASCII-based DIF to XML-based DIF documents • Introduction of specific ISDC parent - child principle • Using XML database for parent DIF XML documents • Providing thematic catalog product search using ISDC catalog metadata ontologies CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  17. Recent activities (2) • Developing a service for publication of data via unique identifier (e.g. DOI, URN) • ISDC is part of CEOS International Directory Network (IDN) gateway to Earth science data and information maintained by NASA's GCMD • Implementing framework S/W and preparing ISDC DIF metadata XSLT for ISO 19115 compliant CWS CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  18. CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  19. ISDC and GCMD DIF (1) • 1988: evaluating metadata standards for the management of data and information for the multi-domain GFZ CHAMP satellite mission • Adapting GCMD DIF for unique identifying data sets => developing DIF based ISDC product philosophy • 2000: using enhanced DIF metadata for CHAMP products => CHAMP ISDC • 2004: using enhanced ISDC DIF for American-German GRACE satellite mission products => GRACE ISDC • Developing a portal framework based data and information manangement portal => ISDC portal CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  20. ISDC and GCMD DIF (2) • 2006: integrating more projects (GGP, GGSP, …) into the new ISDC portal using ISDC DIF metadata • 2006/2007: providing XML based ISDC DIF documents to the GCMD (using GCMD DIF builder) • 2007: evaluating and adopting XML DIF V. 9.x standard XML schema for ISDC objectives => introducing new ISDC parent – child DIF (1:n) relation for product types as well as for data files of a specific product type • ISDC is using the new parent – child DIF relation for the products of the GPS-PDR project (GPS orbits, Earth rotation parameters, quality files) CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  21. ISDC and GCMD DIF (3) • Product type independent base DIF V.9 XML schema • Product type dependent parent DIF V.9 XML schema • Product (data file) dependent child DIF XML schema Generating GCMD DIF standard compliant metadata documents • Product typ referencing parent DIF V.9 XML document • Product (data set) referencing child DIF XML document • (containing skinny DIF + data file describing data) CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  22. ISDC Parent DIF V.9 XML document CH-OG-3-RSOXML schema: base-dif.xsd, CH-OG-3-RSO.xsd ... -<DIF: xmlns: ...“http://isdc.gfz-potsdam.de/xsd/base-dif.xsd”> CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  23. ISDC Child DIF V.9 XML document CH-OG-3-RSO+CTS-CHA_2000_219_10 <Parent_DIF>CH-OG-3-RSO</Parent_DIF> +<Data_Parameters> CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  24. CH-OG-3-RSO Data Parameters CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  25. ISDC DIF XML schema • ISDC DIF is complex type => product type dependent DIF documents inherit base DIF schema attributes • Using references via complex type definitions (e.g. roles) • Using enumeration constructions for attributes like role, data progress, … • Entry_id with “+”sign in the name (necessary for data file depenent child DIF documents • Using XSLT or database procedures for DIF to ISO 19115 transformation process => is there a GCMD DIF2ISO implementation available? => why not changing completely to ISO19115? CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  26. GCMD ISDC Collaboration • Joint developing geoscience standards for metadata and services • DIF Version … (down compatible!) • Catalog web services (CWS) and interfaces • Networking catalogs using CWS techniques (OGC ISO 1911x, Z39.50, …) • Connecting data and publications using DOI concept(unique identifyer for data files) • Evaluating the ESML (Earth Science Markup Language) and derivates (e.g. QuakeML, …) for usage for metadata and data description as well as exchange • Developing an API for uploading DIF documents CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  27. More about GGOS on Friday at the plenary CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

  28. Thank you very much for your attention! rit@gfz-potsdam.de CEOS Working Group on Information Systems and Services, WGISS-23, Hanoi, May 21 - 25, 2007

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