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The main objective of this project was to assess the reliability and suitability of Pylon detector (TEL model) Rn analyser for scientific applications, particularly in complex mountain environments. This evaluation was carried out within the ITINERIS TNA Access, with the specific goal of testing the performance of the Pylon detector coupled with the Radon Mapper Monitor developed by Tecnavia/Mi.am (Italy).
To achieve this, an intercomparison campaign was conducted with the reference radon detector operated at the high-altitude research station of Jungfraujoch (JFJ, 3454 m asl), Switzerland, representative of free troposphere and mountain environments. The campaign took place in July 2025 and combined physical access for installation and dismantling with remote access for continuous monitoring and real-time data collection.
This activity builds upon the experience gained at Ottavio Vittori Observatory, Mt. Cimone (Italy, 2165 m asl), where a similar Pylon detector (TEL model) coupled with a Radon Mapper Monitor unit has been operating continuously since 2023.
In addition to validating the instrument’s performance at JFJ, this comparison with the reference detector provides an opportunity for cross-validation across sites characterized by different altitudes and atmospheric dynamics, thus strengthening the reliability of radon observations in diverse mountain contexts. Besides the technical characterization of instruments, the field campaign offers a good opportunity to conduct a comparative study on the influence of PBL dynamics on the free troposphere of two European mountain sites, both referring to ACTRIS and ICOS RIs.
All data generated during the campaign will be stored in the ITINERIS HUB repository, ensuring compliance with FAIR principles (Findable, Accessible, Interoperable, Reusable), and will be integrated into the CNR-ISP mountain hub catalogue to support future research and data sharing initiatives.
