Implementation of a SEIS for air quality data in Belgium

The OGC Sensor Observation Service aggregates readings from live, in-site and remote sensors. The service provides an interface to make sensors and sensor data archives accessible via an interoperable web based interface.


In this pilot, a system for INSPIRE compliant e-reporting is established to serve data in accordance with a data-model for e-reporting, which was developed for the implementation of the new “Implementing Provisions for Reporting (IPR – 2011/850/EU)” under the Air Quality Directive (2008/107/EC).

To achieve this a data flow to collect regional data in a central national SDI has been adapted as an e-reporting production chain focused on the harmonisation, validation (including official approval by regional authorities), serving air quality data and indicators to the European Commission and by extension to all other interested parties, including the public at large.

The reporting is composed of several different data-flows. All the datasets with geometry are made available through a web viewer and for specific purposes in a mobile client (see below). To maximise the project service usage three use cases are performed: “The reporting service”, “Validation and official submission” and “Providing useful open services derived from the same data”.

To implement the pilot application the first step was to harmonise the data for the dataflows and validate the harmonised data against the AQD-schema using the harmonisation and validation toolkit made available in eENVplus infrastructure for the dataflow B, C, D. A specific reporting service was developed based on the OGC specifications for Sensor Observation Services (SOS) for dataflow E1a, E2a, F1a and F2, which is then replicated in the eENVplus cloud infrastructure as example and tested in pilot EP02 for dataflow E1a(Information on primary validated assessment data - measurements).

The reporting files are the officially approved using the links to the HTML-view of the GML/XML and to the automated validation reports available in the protected test repository of the European Environment Agency (EEA). A specific tool made available by the JRC is used for dataflow H-K. These datasets will be compiled by regional agencies with national coordination and support of the process.

The eENVplus infrastructure used to perform the use cases is mainly related to harmonisation and validation toolkit and the eReporting service based on INSPIRE compliant SOS service.

The data can be consumed by the public in original format (GML/XML), or in other formats provided by (INSPIRE compliant) OGC-services or via light web viewers based on Leaflet.js integrated within the website of the Interregional Environment Agency (IRCEL-CELINE) and/or a smartphone app for Android, iOS and Windows Phone (search for the “Air Quality Belgium” app in the relevant stores). In the mobile app, functionalities for exploring time-series (based on the 52°North JavaScript Sensor Web Client) are combined with the most important WMS layers which are also prominently present in the agency website (both near real-time interpolated data and forecast data for the most common pollutants).


This application has been developed by IRCEL-CELINE and SINERGIS.
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Source Code
Download source code from GitHub and start to develop your own native app with Phonegap/Cordova of the 52°North JavaScript Sensor Web Client.

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Training Material


Follow this Training Module in the eENVplus e-learning platform.