Arctic Radioactivity: Low Levels Detected Despite Permafrost Thaw

During the 2026 Arctic Floating University expedition, researchers measured exceptionally low radioactivity on missions ashore Novaya Zemlya and Franz Josef Land. From July 1 to July 22, 2026, scientists aboard the Professor Molchanov vessel recorded radon flux values ranging from less than one to 200 millibecquerels per square meter per second. These figures, along with near-zero alpha particle flux and background gamma radiation levels, signify normal environmental conditions.

Permafrost's insulating properties were noted as a key factor in limiting radioactive gas release. While warming Arctic temperatures can lead to permafrost melt and potentially increase radon emissions, the 2026 findings did not reveal such anomalies. The expedition collected diverse samples, including soil, mosses, lichens, vascular plants, and bottom sediments from the Barents Sea. This data will help track temporal changes in radionuclide distribution and assess the impact of human activity on Arctic ecosystems.