Airborne Radioactivity Measurements Across Canadian Monitoring Stations

Health Canada's Radiological Monitoring Network provides activity concentration data for radionuclides like beryllium-7, lead-210, cesium-134, cesium-137, and iodine-131. The dataset captures measurements from monitoring stations across Canada, including a documented increase in anthropogenic radionuclides following the 2011 Fukushima-Daiichi nuclear accident. Data is derived from particulates accumulated in filter media by high-volume air samplers.

Use Cases

• Analyze temporal trends in activity concentration for natural radionuclides like beryllium-7 and lead-210 to study atmospheric processes.
• Identify and quantify spikes in cesium-137 activity concentration associated with events like forest fires.
• Track the presence and peaks of anthropogenic radionuclides such as iodine-131, which can indicate medical usage or nuclear incidents.
• Compare the measured activity concentration of cesium-134, cesium-137, and iodine-131 against background levels from natural sources.

Strengths

• Includes data for five specific radionuclides: beryllium-7, lead-210, cesium-134, cesium-137, and iodine-131.
• Captures a documented event, showing increased activity concentrations for anthropogenic radionuclides between March and May 2011.
• Data is collected from a network of monitoring stations distributed across Canada.

Limitations

• The specific number of rows, columns, and monitoring stations is not provided in the input.
• Data is described as being 'typically dominated by natural radionuclides,' which may limit analysis of rarer anthropogenic signals.
• Sample data and precise column definitions are unavailable, complicating initial data exploration.

Provenance

Source

Health Canada’s Radiological Monitoring Network (CRMN), provided by Natural Resources Canada.

Collection Method

Analysis of particulates accumulated in filter media drawn by fixed high-volume air samplers at monitoring stations.

Time Range

Includes data at least from 2011 onward, as it references the Fukushima-Daiichi accident.

Freshness

The dataset was last updated on March 24, 2026, indicating recent maintenance.

Geography

Monitoring stations across Canada.