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To comply with the AQD e-Reporting data, the Austrian Environment Agency has, together with Austrian Institute of Technology (AIT), developed INSPIRE compliant download services supporting the full requirements reporting under European Air Quality Directive 2008/50/EC (AQD). Thus, the Austrian governmental air quality measurement data, together with the corresponding measurement metadata and reporting relevant expertise, is available via real time web-services. For data flow B on air quality zones as well as D on air quality stations it was clear that we would provide this data via a Web Feature Service (WFS using GeoServer; in addition, the data flows C (assessment regime) and G (attainment) are provided by this service. The AQD database underlying the GeoServer has been based on the INSPIRE based formats; the Austrian air quality data is transferred from the national database via ETL routines. For the primary air quality data provided under data flow E we decided to use a Sensor Observation Service (SOS), as this service is far better suited for the provision of time series data. The SOSI implementation used in this solution is a new developed SOS Server based on the openUwedat-Framework developed by AIT. This framework provides a harmonized way to wrap virtually any source for time series data by adapting the java data handler class as documented. The use of such a data handler as the interface to the data source allows for easy adaptation of the SOSI to many existing systems. Writing an interface - a data handler - can be done by a system integrator or the end user with java experience as they must only adapt the existing data handler class that has been implemented in Java. However, there is an area of overlap between the two services, pertaining to the measurement metadata. As the features provided by both services are identical, the SOSI does not provide measurement metadata directly but depends on a WFS as a companion service, accessing the requested measurement metadata from this service and re-formating the data as required for re-provision under SOS. It is also possible to adapt the both the GEOSERVER configuration as well as the openUwedat based SOS for the provision of other environmental media outside the domain of air quality. Therefore we look forward to and encourage not only the INSPIRE community to experiment with the AIT SOS solution and to adapt it for other environmental monitoring domains as required.
Topic Area: [2.2] Technologies and tools required to deliver INSPIRE Abstract Type: Oral Presentation
Comments: SOS, WFS, AQD, Air Quality
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