edu.ucar.opensky::articles:19389 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T02:40:44.565911 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7d79d6b Global real-time dose measurements using the Automated Radiation Measurements for Aerospace Safety (ARMAS) system 2016-11-01T00:00:00Z publication https://n2t.org/ark:/85065/d7d79d6b https://doi.org/10.1002/2016SW001419 Tobiska, W. K. author Bouwer, D. author Smart, D. author Shea, M. author Bailey, J. author Didkovsky, L. author Judge, K. author Garrett, H. author Atwell, W. author Gersey, B. author Wilkins, R. author Rice, D. author Schunk, R. author Bell, D. author Mertens, C. author Xu, X. author Wiltberger, Michael author Wiley, S. author Teets, E. author Jones, B. author Hong, S. author Yoon, K. author UCAR/NCAR - Library publisher The Automated Radiation Measurements for Aerospace Safety (ARMAS) program has successfully deployed a fleet of six instruments measuring the ambient radiation environment at commercial aircraft altitudes. ARMAS transmits real-time data to the ground and provides quality, tissue-relevant ambient dose equivalent rates with 5min latency for dose rates on 213 flights up to 17.3km (56,700ft). We show five cases from different aircraft; the source particles are dominated by galactic cosmic rays but include particle fluxes for minor radiation periods and geomagnetically disturbed conditions. The measurements from 2013 to 2016 do not cover a period of time to quantify galactic cosmic rays' dependence on solar cycle variation and their effect on aviation radiation. However, we report on small radiation clouds in specific magnetic latitude regions and note that active geomagnetic, variable space weather conditions may sufficiently modify the magnetospheric magnetic field that can enhance the radiation environment, particularly at high altitudes and middle to high latitudes. When there is no significant space weather, high-latitude flights produce a dose rate analogous to a chest X-ray every 12.5h, every 25h for midlatitudes, and every 100h for equatorial latitudes at typical commercial flight altitudes of 37,000ft (similar to 11 km). The dose rate doubles every 2km altitude increase, suggesting a radiation event management strategy for pilots or air traffic control; i.e., where event-driven radiation regions can be identified, they can be treated like volcanic ash clouds to achieve radiation safety goals with slightly lower flight altitudes or more equatorial flight paths. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2016 American Geophysical Union. None eng geoscientificInformation