EGU 2015 Dr. Ingo Simonis Open Geospatial Consortium Europe Citizen Observatories: A Standards Based Architecture

Open Geospatial Consortium (OGC) © 2014 Open Geospatial Consortium 2

Open Geospatial Consortium (OGC) © 2014 Open Geospatial Consortium 3 Not for profit 35+ Standards 500+ Members 1994 Consensus driven 3

© 2015 Open Geospatial Consortium 4 slide based on work by Alex Robin © 2015 Open Geospatial Consortium Citizens Observatories

OGC Sensor Web Enablement Quickly discover sensors and sensor data (secure or public) that can meet my needs – location, observables, quality, ability to task Obtain sensor information in a standard encoding that is understandable by me and my software Readily access sensor observations in a common manner, and in a form specific to my needs Task sensors, when possible, to meet my specific needs Subscribe to and receive alerts when a sensor measures a particular phenomenon © 2015 Open Geospatial Consortium 5

describe sensors describe citizens describe observations discover & access data task citizens & sensors common formats

Sensors and Actuators Copyright © 2015 Open Geospatial Consortium

SensorML Profile for Citizen Science SensorML is generic Profile required to ensure interoperability –minimum set of SensorML elements –structure on how to provide this minimum set of elements who device connected sensors

SensorML Profile for Citizen Science SensorML is generic Profile required to ensure interoperability –minimum set of SensorML elements –structure on how to provide this minimum set of elements Formal definition with Schematron? Best practices without formal testing? Simplify even more and go with JSON-LD contexts? who device connected sensors

10 O&M Design patterns

O&M Profile for Citizens Science O&M Result is generic Most devices are used in default settings Profile required to enhance interoperability Formal definition with Schematron? Best practices without formal testing? Simplify even more and go with JSON-LD contexts? who observation connected sensors

How Much Profile is Enough? Often, results are first class citizens!... but metadata matters! How much observation specific information do we need? Avoid redundant information (observation centric vs. sensor centric)

GeoSynchronization Service (GSS) Replicati on Channel Change Channel Resolutio n Channel Alternative Solution Collector Submits Change Request Collector notified of disposition of proposed change(s) 2 2 Reviewer is notified of pending Change proposals 3 3 Reviewer Approves or Rejects the proposed changes 4 4 Approved changes are applied to features via OGC WFS-T OGC WFS- T Geographic features accessible via WFS OGC WFS- T 6 6 GSS notifies Subscribers of changes to features (i.e. Transactions) Collector Reviewe r Subscrib er Also known as a “Data Publisher” or “The Crowd” Collector reads features from a WFS and proposes changes to those features. This may include proposing creation of new features. 13 slide by Peter Vretanos

WFS WMTS GeoPackage Service GSS A GeoPackage service (GPS) exists that creates geopackages (WPS?). Client makes request to service to get a geopackage. GeoPackage service accesses WFS’s and WMTS’s to create the GeoPackage. Package is created and sent to client. The client makes modifications to the features in the geopackage A “geopackage enabled” GSS exists to mediate Tx to the WFS’s. Client posts the geopackage with modified features to the GSS. The GSS processes modified features in the geopackage as it would any feature. Changes that are accepted after validation are posted to their source WFS. GeoPackage can be refreshed from GPS to get latest accepted revisions. slide by Peter Vretanos

Sensors Everywhere (Things or Devices) 50 billions Internet-connected things by 2020 OGC SWE-IoT Focus

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© 2015 Open Geospatial Consortium 17 slide based on work by Alex Robin © 2015 Open Geospatial Consortium

Next Steps Geopackage & GSS SWE, SWE4IoT and SWE solutions closer to programming code JSON-LD & GeoJSON © 2015 Open Geospatial Consortium 18 ReportExperimentProduce

© 2015 Open Geospatial Consortium 19 Ingo Simonis opengeospatial.org