Low-Cost Air Quality Sensor Network Measurements with Calibration Tiers

Ongoing data collection from a harmonized database of low-cost air quality sensor networks. The dataset currently includes measurements from 10 unique US-based networks, reformatted into a common structure with embedded metadata and quality flags. It is curated by the Universitat Politècnica de Catalunya (UPC) as part of the Low-Cost Air Quality Sensor Harmonization project.

Use Cases

• Validate satellite-derived air pollution estimates using ground-level sensor measurements of specific pollutants.
• Compare data quality across different sensor networks using the embedded calibration tier and data quality flag features.
• Analyze temporal trends in pollutant concentrations from time-series data collected by the UPC network in Spain.
• Train models to predict air quality levels by leveraging the harmonized measurements from multiple sensor networks.
• Filter and search for sensor data based on specific calibration criteria, location, date range, and target pollutant.

Strengths

• Data from 10 unique sensor networks is harmonized into a single framework.
• Includes a critical review tier system and data quality flags for each network.
• Common data format with embedded metadata streamlines processing.

Limitations

• Specific row counts, column details, and geographic scope beyond the 10 US networks and UPC Spain site are unknown.
• Data quality is dependent on the calibration efforts of each contributing network, which may vary.
• The ongoing collection means temporal coverage and completeness for individual networks may be inconsistent.

Provenance

Source

Universitat Politècnica de Catalunya (UPC) sensor network and other contributing networks, via NASA's LARC_CLOUD.

Collection Method

Ground site data collected by low-cost sensor networks, reformatted and harmonized into a common framework.

Time Range

Ongoing collection; specific start date unknown.

Freshness

Data collection is described as ongoing.

Geography

Includes data from 10 unique US-based networks and the UPC network in Spain.