What is ECHO?

1. Reverb • Mirador • Giovanni • … Client Data Retrieval ECHO Open Search • Open Search • Searching • Ordering • Multi-format Retrieval • ECHO10 • ISO 19115 • REST API Authors: Doug Newman (douglas.j.newman@nasa.gov), Andrew Mitchell (andrew.e.mitchell@nasa.gov) • ECHO Catalog What is ECHO? How Can I Use It? ECHO Facts NASA’s Earth Observing System ClearingHOuse (ECHO) acts as the core metadata repository for NASA’s Earth Observing System Data and Information Systems data centers, providing a centralized mechanism for metadata and data discovery and retrieval. ECHO hasrecently made strides to restructure its API; allowing data partners to streamline and synchronize their metadata ingest using RESTful web services as well as providing an ESIP and OGC compliant OpenSearch implementation. • 3500+ Available Collections • Over 120 million Granules • 41million ECHO hosted Browse Images • 2TB Data Index Covers Petabytes of Data • 78K+ registered users, utilizing EOSDIS URS • 13 Active Data Partners • Several Clients in Test & Evaluation • LANCE Near Real Time Data ECHO and OpenSearch OpenSearch Description Documents (OSDDs): https://api.echo.nasa.gov/opensearch/datasets/descriptor_document?client_id=dug https://api.echo.nasa.gov/opensearch/granules/descriptor_document?client_id=dug Granule search: curl "https://api.echo.nasa.gov/opensearch/granules.atom? clientId=dug& shortName=MOD02QKM&versionId=5& dataCenter=LAADS& boundingBox=-180.0%2C-90.0%2C180.0%2C90.0& startTime=2002-05-04T03A00-04%3A00& endTime=2009-05-04T00%3A00%3A00-04%3A00& numberOfResults=10&cursor=0” Granule result: <?xml version="1.0" encoding="UTF-8"?> <feed esipdiscovery:version="1.2" xmlns="http://www.w3.org/2005/Atom" xmlns:esipdiscovery="http://commons.esipfed.org/ns/discovery/1.2/" xmlns:os="http://a9.com/-/spec/opensearch/1.1/"> <os:totalResults>50321</os:totalResults> <os:itemsPerPage>10</os:itemsPerPage> <os:startIndex>1</os:startIndex> <entry xmlns:echo="http://www.echo.nasa.gov/esip" xmlns:georss="http://www.georss.org/georss/10" xmlns:gml="http://www.opengis.net/gml" xmlns:time="http://a9.com/-/opensearch/extensions/time/1.0/"> <id>G19324-LAADS</id> … </entry> Why RESTful? • ESIP Federated Search, based on the OpenSearch convention, is a simple framework for doing a federated query among participating members for Earth science data. ECHO provides standards-based access to its public catalog through an implementation of OpenSearch. • ECHO Open Search supports the following standards, • OpenSearch 1.1 • ESIP Discovery 1.2 • OGC® OpenSearch GeoSpatial and Temporal Extensions OGC 10-032r3 • Datasets and granules can be queried using the following constraints, • keywords (dataset only) • spatial (bounding box, geometry, place name) • temporal (start, end) • instrument (dataset only) • short name (granule only) • version ID (granule only) • Scalable • Fault-tolerant • Recoverable • Secure • Loosely coupled • Ease of client development • http://en.wikipedia.org/wiki/Representational_state_transfer Documentation and Support • http://earthdata.nasa.gov/echo • echo@echo.nasa.gov https://api.echo.nasa.gov/opensearch ECHO/NASA POC: andrew.e.mitchell@nasa.gov