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52°North SOS

Web Service

The 52°North Sensor Observation Service (SOS) supports the interoperable provision of live and archived sensor observation data. A sensor could be a water level meter in a stream, a weather station, or an air quality monitoring station.

screenshot of 52°North SOS test client version 1.0.0


  • Implements the SOS 1.0.0 and 2.0.0 standards.
  • A browser based client provides means for administration and provides test queries for all supported operations.

SOS Operations


  • GetCapabilities: for requesting a self-description of the service.
  • DescribeSensor: for requesting information about the sensor.
  • GetFeatureOfInterest / GetFeatureOfInterestTime (1.0): for requesting features (e.g. sensor/measurement locations).
  • GetObservationById / GetObservation (1.0): for requesting observations.
  • GetResult: for requesting sensor data.
  • GetResultTemplate (from 2.0): for requesting a template of the result structure that will be returned by a GetResult request.
  • GetDataAvailability (from 2.0): for requesting the data availability for certain configurations.


  • InsertSensor (from 2.0) / RegisterSensor (1.0): for inserting metadata of new sensors.
  • InsertObservation, for inserting new observations.
  • UpdateSensorDescription (from 2.0): for updating the description of a sensor.
  • DeleteSensor (from 2.0): for deleting a sensor/procedure and all related offerings and observations.
  • DeleteObservation (from 2.0): for deleting an observation.
  • InsertResultTemplate (from 2.0): for inserting a result template.
  • InsertResult (from 2.0): for inserting results.

Within these operations the following filter operators are possible where applicable:

  • Spatial filter: BBOX, using a bounding box.
  • Temporal filter: During, with time period.
  • Temporal filter: TEquals, with time instant.



Licence: GNU General Public License (GPL) version 2

Software Version: SOS 4.0.0

Supported Platforms: Windows, Linux, Mac

API Interfaces: Java

Commercial Support:

Community Support:

Community Website:

Other 52°North projects: WPS

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