Analysis of radon origin by backward atmospheric transport modelling |
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| Authors: | D Arnold A Vargas AT Vermeulen B Verheggen P Seibert |
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| Institution: | 1. Institute of Energy Technologies, Technical University of Catalonia, Barcelona, Spain;2. Energy Research Centre of the Netherlands, Air Quality & Climate Change, Petten, The Netherlands;3. Institute of Meteorology, University of Natural Resources and Applied Life Sciences, Vienna, Austria;1. Université de Toulouse, UPS, INSA, LMDC, 135 Avenue de Rangueil, F-31077 Toulouse Cedex 04, France;2. DEN/DSN/SEEC/LECD, Bât.326, CEA Cadarache, 13108 Saint Paul Lez Durance, France;1. Radiological Safety Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, Tamilnadu, India;2. Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400085, India;3. Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India;1. Department of Mathematics, National Institute of Technology Rourkela, Odisha, 769008, India;2. Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai, 400 094, India;1. Scientific & Technical Centre “AMPLITUDA”, Gen. Alekseeva 15, Zelenograd, Moscow, Russia;2. National Building Research Institute, Faculty of Civil & Environmental Engineering, Technion – Israel Institute of Technology, Haifa, Israel |
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| Abstract: | This work shows how ambient radon concentrations measured at Cabauw station in central Netherlands are influenced by transport from different regions under typical transport conditions occurring during April and November, 2007 by means of atmospheric Lagrangian particle dispersion modelling in a receptor-oriented approach. Four specific regions have been isolated to assess their contribution to the modelled radon ambient concentrations at Cabauw, and two different radon flux assumptions. Westerly flows coming from the ocean are poor in radon and do not increase radon air concentrations unless there is some fetch over the British Isles. Continental transport, mainly from eastern and southern Europe, significantly increases radon background concentrations, reaching increments of 3 Bq m?3. A constant 0.66 atoms cm?2 s?1 radon flux over land and zero over water bodies is a good approximation for the source term in order to study regional contributions and modulation of the radon background. |
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