1. Geo Data Providers Workshop
Florence, Italy, April 2017
The GEO DAB APIs
M. Santoro (1), R. Roncella (1), P. De Salvo (3), O. Ochiai (3),
Colangeli (2), J. Van Bemmelen (2), S. Nativi (1)
(1) Institute of Atmospheric Pollution Research,
National Research Council of Italy
(2) European Space Agency
(3) GEO Secretariat

2. GeoSpatial Web Service Expert
Accessing the GEO DAB
Server Side
Client Side
User (developer)
Standard Web Services (OGC Web Services, OAI-PMH, CKAN, etc.) X
GeoSpatial Web Service Expert
OpenSearch (Extended)
GEO DAB API JS
Web Expert
GEO DAB API REST

3. Different APIs for serving diverse Application development use cases  
A set of standard Web service interfaces:
e.g. OGC service interfaces, CKAN, OAI-PMH, FTP, etc.
A set of APIs for software developers:
Client side APIs:
(high-level) JavaScript library
… . (Python)
Server side APIs:
REST/JSON APIs
OpenSearch APIs
… .   

4. GEO DAB APIs implement domain-specific extensions
Search/Filter by cloud cover perc., polarization mode/channel, etc.
Remote Sensing
Search/Filter by magnitude, magnitude type, earthquake depth, etc.
Seismology

5. GEOSS View Definition:
Subset of the whole GEOSS resources defined by applying, via the DAB, a set of clauses
Discovery clauses (e.g. spatial envelope, keywords, sources, etc.)
Access clauses (e.g. data format, access protocol, CRS, etc.)
Defined “View” exposed on the GEOSS Portal
Consumer-defined View – i.e. Client-side These views are available only for the client application which defined the view.
Provider-defined View –i.e. Server-side These views are available for all client applications.

6. Test Environment
A simple web-based tool to define and manage GEOSS Views

7. Virtual Workshop
A virtual workshop was organized to demonstrate how to use GEO DAB APIs
Two sessions:
Description of APIs: which service interfaces are supported, which extension parameters, etc.
Hands-on: how to define views and use APIs in client applications

8. Disaster Resilience SBA View
Defined by GEO Sec
Experts in collaboraiton
with Community
Currently, subsets by Data Providers:
IRIS EarthQuake
Humanitarion Data Exchange
etc.

9. Water Resources Management SBA View
Defined by GEO Sec
Experts in collaboraiton
with Community
Currently, subsets by Keyword:
Aerobic
Alkalinity
etc.

10. GEO CRADLE View Defined by GEO CRADLE
Currently, subsets by Bounding Box:
Middle-East

11. GEO BON Test View Defined by GEO BON
Currently, subsets by Access Constraint:
CRS: EPSG:3857;
Protocol: OGC WMS;
Format: PNG

12. Thank you