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SOS implementation of a INSPIRE download service of near real time air quality data

Xalo Fernandez and Marisol Gómez Andrés

(Submission #140)


Some important environmental dataset, included in INSPIRE themes (Environmental Monitoring Facilities or Atmospheric Conditions and Meteorological geographical features, for example), are composed of time series of sensor observations and measurement stations records. The structure of this information (near real time updates, observation focused data, large time series of information) makes not suitable for its download the current service interfaces (Atom and WFS) recommended by the technical guidelines of INSPIRE Download Services. In the other hand, OGC’s Sensor Observation Service (SOS) interface standard is the most appropriate way to publish this type of data, encoded in Observations & Measurements (OM) schema, which constitutes ISO 19156 standard. This issue has been noted and studied by the INSPIRE initiative, which, in the last two years, has dedicated a task of its Maintenance and Implementation Group (MIG) to the extension of Download Services for observation data (MIWP-7a). This activity has developed a draft update of INSPIRE technical guidelines on Download Services including SOS implementation and has funded the development of an extension of the OGC SOS reference implementation (52ºNorth SOS) that makes this service INSPIRE compliant.

In Spain, the Ministry of Agriculture, Food and Environment (MAGRAMA) is responsible for some of these datasets and so for publicly providing them following INSPIRE Directive and other environmental reporting obligations. Among others, MAGRAMA manages a sensor network of air quality.

In this context, MAGRAMA has decided to make available to the public the records of its air quality network through a SOS download service. The challenge has been to publish, in a straightforward and fast way, a large amount of data, being updated in near real time and in a INSPIRE compliant format. The service has been built with open source tools and, besides meeting INSPIRE requirements, it includes a RESTful API to foster the development of downstream added-value applications and services based on Ministry’s data. A view client application has been also published to allow users, just using their web browsers, to explore the information through maps and charts.


Topic Area:  [2.2] Technologies and tools required to deliver INSPIRE
Abstract Type:  Oral Presentation

Additional fields

Comments:   SOS, Environmental Monitoring Facilities, Air quality, MAGRAMA, download services, sensor networks

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