SOLAR MODULATION OF ATMOSPHERIC COSMIC RADIATION: COMPARISON BETWEEN IN-FLIGHT AND GROUND-LEVEL MEASUREMENTS

Autor:	R. H. A. Iles, J. B. L. Jones, G. C. Taylor
Rok vydání:	2005
Předmět:	Physics Nuclear and High Energy Physics Meteorology Civil aviation Dose profile Astronomy and Astrophysics Cosmic ray Space weather Atmospheric sciences Atomic and Molecular Physics and Optics Altitude Forbush decrease Aircrew Space Science
Zdroj:	International Journal of Modern Physics A. 20:6690-6692
ISSN:	1793-656X 0217-751X
Popis:	January 2000 saw the start of a collaborative study involving the Mullard Space Science Laboratory, Virgin Atlantic Airways, the Civil Aviation Authority and the National Physical Laboratory in a program to investigate the cosmic radiation exposure to aircrew. The study has been undertaken in view of EU Directive 96/291 (May 2000) which requires the assessment of the level of radiation exposure to aircrew. The project's aims include validation of radiation dose models and evaluation of space weather effects on atmospheric cosmic radiation levels, in particular those effects not accounted for by the models. Ground level measurements are often used as a proxy for variations in cosmic radiation dose levels at aircraft altitudes, especially during Forbush Decreases (FDs) and Solar Energetic Particle (SEP) events. Is this estimation realistic and does the ground level data accurately represent what is happening at altitude? We have investigated the effect of a FD during a flight from Hong Kong to London Heathrow on the 15th July 2000 and compared count rate and dose measurements with simultaneous variations measured at ground level. We have also compared the results with model outputs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::83d4438e071aa7ee4d0f58669b75192e https://doi.org/10.1142/s0217751x05029824 Zobrazit plný text záznamu