# Presentation: 816081

## Sharing Community Data, Services and Tools using the EOS Clearinghouse

- Data
- Partners

**Sharing Community Data, Services and Tools using the EOS Clearinghouse**

- (http://eos.nasa.gov/echo)

- Robin Pfister, _[robin.g.pfister@nasa.gov](mailto:robin.pfister@nasa.gov)_, NASA Goddard Space Flight Center, (301) 614-5171
- Keith Wichmann, _[wichmann@gst.com](mailto:wichmann@gst.com)_, Global Sciences & Technology Inc, (240) 542-1117
- Michael Burnett, _[mburnett@blueprinttech](mailto:mburnett@blueprinttech.com)__[.com](mailto:mburnett@blueprinttech.com)_, Blueprint Technologies, (800) 955-2985 x249
- Robert Harberts, _[harberts@gst.com](mailto:harberts@gst.com)_, Global Sciences & Technology Inc, (240) 542-1119

- Graphical User Interfaces
-    - Geared to interface directly with a user
-    - May use ECHO account services, catalog services, order entry services as either guest or as a registered user (on behalf of their user)
- Machine-to-Machine Interfaces
-    - Do not directly involve a person
-    - Typically come from other existing system(s) using ECHO as a archive or from specialized GUIs that need regularly updated preprocessed & staged metadata.

_**Data Extensibility**_

- Is an open system - Allows communities to share tools, services and data, extending available science resources from the science community, to the science community
- Accomplished through a metadata clearinghouse and service broker using application program interfaces (APIs) based on XML and web services
- Decentralizes tools for manipulating data and supports interoperability of distributed functions
- Approach is consistent with the trend toward a federated community with distributed, heterogeneous resources
- Supports adaptors to translate between different standards and protocols and those of ECHO
- Is a reusable, enabling framework that allows different data systems and services to work together
- The data model can be changed to support other communities
- Domain specific services (e.g. spatial searching mechanism) can be changed to support other communities
- Is available as Open Source

_**Service Extensibility**_

- New Partners:
- - Participate with ECHO to provide Earth Science data by making metadata representing its holdings available for search and provides a mechanism for allowing a client to access the data holdings
- - Can establish policies for use of their data, and establish rules for access control on collections and data granules.
- New Collections/Data Types
- Access Mechanisms

_**The ECHO Solution**_

_**Client Extensibility**_

- Types of Services:
- - Data Services: e.g. collection, subsetting,
- - Search Services: e.g. gazetteer, thesaurus
- - Administrative Services: e.g. accounting

- Service
- Interactions:
- - Advertised
- - Context Passing
- - Brokered
- - Order Options

- Service Views:
- (based on user perspective):
- - Service View - looking for a service first
- - Data View - looking for data first and then finding services for identified data

- Client Partner Context

*FTP Req/Data*

*Data*

- Register,
- Search,
- & Order

**E**
**C**
**H**
**O**

- Clients

- Partners

- Data Partner Context

- Quote (opt),
- Order,Status

- Clients

*FTP Request/Data*

*Metadata*

*Data*

- Online, free
- distribution

- Order
- Distribution
- (Quote is
- optional)

**E**
**C**
**H**
**O**

*find*

*publish*

*bind (direct)*

*bind (brokered)*

*Service*
*Input Data*

*Acts *
*Upon*

- Service Partner Context

- Clients

**E**
**C**
**H**
**O**

- Service
- Partners

- Clearinghouse
- Catalog &
- Browse Images

- ECHO

- Order & Service
- Brokers

- C
- L
- I
- E
- N
- T
- A
- P
- I

- SERVICE API

- D
- A
- T
- A
- A
- P
- I

- Data
- Partners