Ozone and Carbon Monoxide Data from Mobile Sensors on Zurich Trams

Zurich, Switzerland, is the location for this dataset of ozone and carbon monoxide concentration measurements. It was collected by the OpenSense mobile sensor network over 4.5 years, with sensors mounted on 10 streetcars. The dataset contains 19.9 million ozone samples from 2012 to 2016 and 49.7 million carbon monoxide samples from 2014 to 2016.

Use Cases

• Calibrating mobile sensor readings based on reference data from the official Ostluft monitoring network.
• Analyzing spatiotemporal patterns of urban air pollution based on GPS-tagged measurements.
• Developing multi-hop calibration algorithms for sensor arrays, as referenced in the accompanying SCAN paper.
• Studying the correlation between ozone levels and environmental factors like temperature and humidity.
• Evaluating route selection strategies for mobile sensing nodes on public transport networks.

Strengths

• Large sample size with 19.9 million ozone and 49.7 million carbon monoxide measurements.
• Long temporal coverage spanning 4.5 years from 2012 to 2016.
• High spatial granularity provided by GPS coordinates from sensors on 10 moving trams.
• Includes auxiliary data like temperature and relative humidity for ozone readings.

Limitations

• Data has not been post-processed and requires cleaning and individual sensor calibration.
• Column-level documentation is absent; field semantics must be inferred from the description.
• Last update date is unknown; freshness unverified.

Provenance

Source

OpenSense mobile sensor network, ETH Zurich.

Collection Method

Measurements collected by sensors mounted on 10 streetcars in Zurich.

Time Range

Ozone: 2012/02 - 2016/09; Carbon Monoxide: 2014/03 - 2016/09

Geography

City of Zurich, Switzerland.