1. ® ® © 2011 Open Geospatial Consortium, Inc. Modernization of the Surface Observations Hub in Meteo-France based on SWE standards 76th OGC Technical Committee Bonn, Germany Yann Génin Alexandre Robin, Frédéric Guillaud March 2, 2011 Sponsored by United Nations Platform for Space-based Information for Disaster Management and Emergency Response - UN-SPIDER

2. OGC ® Current surface observation landscape Heterogeneous networks COBALT, RADOME, PATAC, AURORE, … > 1000 real time stations Regional acquisition (RADOME Hub) Copyright © 2011 Open Geospatial Consortium 552 RADOME ~500 PATAC ( autres et RIC) ~500 RIC SPC (DGPR) 250 OARA ( Salamandre, feux de forêt, sémaphores…)

3. OGC ® Acquisition levels Sensors Plugged onto in-situ station computer … In-situ station computers : depend on heterogeneous networks … XARIA (RADOME network) PULSIA (SALAMANDRE network) OPALE/COBALT (synoptic/ aeronautic network with human presence) MIRIA (measure networks not under MF responsibility : Power plants, railways, motorways, …) NIVOSE (mountain networks) Regional acquisition system RADOME hub Copyright © 2011 Open Geospatial Consortium

4. OGC ® Project’s objectives Re-engineering of the regional RADOME hub Centralization in Toulouse (redundancy in Paris ) Ability to handle new sensors, new (standard) transport protocols (http) Standardization of public interfaces (Web Services, XML, OGC SWE)

5. OGC ® Target architecture Raw Data Harvesting Platform (PFC) SWE Server (52 North) Networks Monitoring & Administration SOS 1.0 SPS 1.0 BUFR encoding SensorML Data SWE Common BUFS Ascii FTP Data dissemination TRANSMET WMO BUFR Dial-Up MODEMS RAS Server (multiple communication channels aggregation) In-Situ Station Computer Public Switched Telephone Network

6. OGC ® SWE concepts mapping : Overview Feature-of-Interest The stations and their localizations if any (ie : 07149, Orly Airport) (feature-of-interest) Localization in the Station (ie : 07149 QFU 26) (feature of interest as well, sampling points in the feature of interest) Offering Parameter aggregate on the basis of sensor type : (ie : Wind, Temperature, Moisture, Visibility, Precipitations …) Procedure The whole network for each offering (ie : Wind Network, Temperature Network, …) For each station (in-situ metrological configuration) Observed Properties Parameters (or phenomena) > 150 !

7. OGC ® SWE Mapping issues : case of multiple localizations 06 26 24 08 20 02 07149-Main 2608 MED 2406 MED Feature-Of-Interest Sampling-Points

8. OGC ® Issue : Phenomenon stuff Surface parameters WMO tables CF conventions Up to 150 parameters Many of them undefined in existing registries Fortunately not available everywhere ! RDF / SKOS dictionary seems to meet requirements hierarchical / horizontal semantic relation Multilingual definitions

9. OGC ® Data acquisition Measurement frequency up to 1 minute Up to 150 parameters Up to 1000 real-time stations Acquisition wave : up to 100 stations to be processed within a 30 seconds slot (pool of 100 dial-up modems) Up to one month data retention This leads to huge « Observation » table – Double partitioning TimeStamp / Offering SWE service : SOS InsertObservation

10. OGC ® Network administration Create / Update / Delete station's profile – Communication (protocol, …) – Identification, localization – Metrological configuration (sensor modules, addresses, calibration parameters, …) – Planning for data acquisition & data transfer – Subscriptions for notifications (parameters, alert thresholds) SWE Services : SOS & SPS – SOS RegisterSensor / UpdateSensor / DeleteSensor – SPS Submit / GetStatus – Issue : Useful UpdateSensor / DeleteSensor not supported in SOS 1.0 (will be available in SOS 2.0) This has been implemented on 52 N by Alex Robin SWE Data model : SensorML

11. OGC ® Network monitoring Sensors and in-situ computer station status –Daily status message (sensors and station status) –Daily and on-demand station’s logs (to be visualized as is) –Communication logs (after each transfer, to be visualized as is) SWE Service : SOS InsertObservation / GetObservation –Sensor status parameters are handled as meteorological properties in a dedicated offering –The daily status message is decoded, and the sensor status information stored in the 52 N database through SOS InsertObservation –Sensor status values are retrieved through SOS GetObservation for monitoring. –Time series for met parameters are also retrieved through SOS GetObservation for monitoring in order to detect anomalies.

12. OGC ® Next steps & milestones Finalize the server : By October 2011 – Initialize station / network configuration – Data quality checks – Statistical parameters computation – RDF/SKOS phenomena dictionary Developments on client side : March – December 2011 – Administration / Monitoring console – SWE Common to BUFR SWE 2.0 migration : Late 2011 – Early 2012 –depending on 52N availability Upper level observations ? Feedback at September and / or December 2011 TCs

13. OGC ® © 2010 Open Geospatial Consortium Wind Offering …

14. OGC ® © 2010 Open Geospatial Consortium Sample RDF/SKOS Dictionary