FedSearchAbstract2009

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Will be submitted Sept. 2 To contribute, modify the title or abstract, then add your key info below the abstract by 3:00 EDT Sept. 2.

Session: Fostering Multi-disciplinary Research via Interoperable Data Systems based on International Geospatial Standards for Earth and Space Sciences

Contents

Federated Space-Time Query for Earth Science Data Using OpenSearch Conventions

The past decade has seen a burgeoning of remote sensing and Earth science data providers, as evidenced in the growth of the Earth Science Information Partner (ESIP) federation. At the same time, the feasibility and utility of combining diverse data sets to understand the Earth as a system has also grown. While the expansion of data providers is in general a boon to such studies, the diversity presents a challenge to finding useful data for a given study. Locating all the data files with aerosol information for a particular volcanic eruption, for example, may involve learning and using several different search tools to execute the requisite space-time queries. To address this issue, the ESIP federation is developing a federated space-time query framework, based on the OpenSearch convention (www.opensearch.org), with Geo and Time extensions. In this framework, data providers publish OpenSearch Description Documents that describe in a machine-readable form how to execute queries against the provider. This flexibility, together with a simple HTTP-get mechanism, should allow a variety of data providers to participate in the federated search framework, from large institutional data centers to individual scientists. The simplicity also makes the construction of clients easy, as do existing OpenSearch client libraries in a variety of languages and existing clients.

Authors

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Author

  • Name: Christopher Lynnes
  • Email: [email protected]
  • Institution: NASA/GSFC
  • Department:
  • City: Greenbelt
  • State: Maryland

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