NASA’s EOSDIS and VOiG Objectives: A Comparison

1. NASA’s EOSDIS and VOiG Objectives:A Comparison Presentation to the Virtual Observatories in Geosciences (VOiG) Conference Denver, CO June 12-15, 2007 VOiG Conference June 12, 2007

2. Theme/Outline • EOSDIS Evolution Plans Parallel eGY Objectives of the VOiG • EOSDIS Background • EOSDIS Vision for Evolution (Tenets) • eGY objectives • Mapping between EEE and eGY • EOSDIS and VOs VOiG Conference June 12, 2007

3. EOSDIS Background • NASA’s EOSDIS is a petabyte-scale archive of environmental data that supports global climate change research EOS 24 Measurements • EOSDIS provides for • Data ingest • Data processing • Data distribution • Archive management • User Services • Holdings as of FY2006 • Volume: 4.9 PB • Collections: >2K datasets • Granules: 56 million files • Browse: 14 million files VOiG Conference June 12, 2007

4. EOSDIS Context Science Data Processing, Info Mgmt, Data Archive, & Distribution Flight Operations, Data Capture, Initial Processing, Backup Archive Distribution, Access, Interoperability, Reuse Data Transport to DAACS/SIPS Data Acquisition RESACs RACs Research Users Tracking EOS & Data Spacecraft ESIP Relay Satellite 2/3’s (TDRS) Distributed Active Archive Centers Data Processing & Mission Control Internet (Search,order, distribution) Education Users White Sands Media Complex (WSC) (Distribution) Public Value-Added Providers Instrument Teams and SIPSs Int’l Partners Interagency Centers & Data EOS Polar Ground Stations Data Centers VOiG Conference June 12, 2007

5. EOSDIS - Distributed Data Centers GHRC GSFC GLAS, MODIS, OMI, OCDPS NCAR, U of Col. HIRDLS, MOPITT, SORCE JPL MLS, TES LaRC CERES, SAGE III San Diego ACRIM DAAC SIPS GHRC AMSR-E, LIS VOiG Conference June 12, 2007

6. EOS Clearinghouse (ECHO) • ECHO is the middleware between EOS data and science data users via a service-oriented architecture • Data Partners provide metadata for their EOS data holdings and other Earth science-related data holdings • Client Partners develop software (“clients”) to give science data users access to ECHO’s registries using ECHO’s open APIs • Science data users search ECHO's registries and access data and services using an ECHO client ECHO • Data Partners • Client Partners Data Registry CollectionsGranules Browse Images Tailored Graphical User Interfaces DAACs Modeling, Applications, Decision Support Systems Client Partner APIs Data Partner APIs End User Other Data Partners Extended Services Registry General-Purpose GUIs VOiG Conference June 12, 2007

7. EOSDIS Evolution • In 2005, NASA began a formal effort to reinvigorate EOSDIS • Known as EOSDIS Evolution • The major objectives of Evolution are: • Improve response to science needs • Facilitate a more distributed environment • Manage archive volume growth • Upgrade aging systems and components • Reduce recurring costs of operations and sustaining engineering VOiG Conference June 12, 2007

8. EOSDIS Evolution Benefits • EOSDIS developed a vision for the 2015 timeframe • Vision description on next slide • Key features of the EOSDIS Evolution approach • Incorporated ideas from data center experiences • Encouraged data centers to assume leadership of development and sustaining engineering responsibilities • Reduced dependence on COTS products • Transitioned responsibilities among elements transparently to users • Introduced efficiencies in services and cost management • processing on demand • on-line archive storage • commodity platforms • Implementation began in 2006 VOiG Conference June 12, 2007

9. EOSDIS – Vision Tenets VOiG Conference June 12, 2007

10. eGY Objectives/Declarations Reference: http://www.egy.org/declaration.html VOiG Conference June 12, 2007

11. Mapping of EEE vision to eGY objectives VOiG Conference June 12, 2007

12. Comparison Points • Note the similarities in objectives; almost a one-to-one relationship • Consistent with EOSDIS evolving into more of a distributed data system • EOSDIS supports a pre-planned community of providers, but makes data available to all interested users in the world community • Recognizes that access to outside data is necessary to develop the data products and models for meeting the science objectives • Given the common goals, EOSDIS and VOs should understand how to work together VOiG Conference June 12, 2007

13. EOSDIS and VxOs – Discussion Questions • How can EOSDIS and VOs benefit from working together? • Could sharing data lead to more meaningful scientific products? • Earth science data (from EOSDIS) and heliospheric sciencedata (from space science VOs) • Growing importance of space weather impacts on human activities • Upper atmospheric interactions • Are there other Earth science disciplines that would benefit from sharing data and ideas? VOiG Conference June 12, 2007

14. EOSDIS and VxOs – Discussion Questions • How would the systems interact? • How would a users interact with two (or more) systems? • common query approaches • registries of capabilities • product catalogs • What level of services provided to the data provider, data user? • EOSDIS has explored these issues in developing ECHO • How do you accomplish data fusion between the systems? • What is the science use case for EOSDIS interaction with a virtual observatory? VOiG Conference June 12, 2007

15. Summary • EOSDIS supports a variety of data providers and provides data services to many users through its network of data centers and data access mechanisms • Serves as a distributed data system for NASA Earth science data • Continuously improving the means to access and share data • The VO paradigm demonstrates alternative ways to performing similar functions • Exchange of information between EOSDIS and VO participants would be beneficial VOiG Conference June 12, 2007