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A hybrid model for better predicting capabilities under parallel wind conditions for NOx concentrations from highways in Ireland
Authors:Rajiv Ganguly  Brian M Broderick
Institution:1. Environmental Research Group, Kings College London, London SE1 9NH, UK;2. Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, Dublin-2, Ireland;1. University of Roma Tre, Department of Mathematics and Physics, Via della Vasca Navale 84, I-00146 Roma, Italy;2. INFN, Section of Roma Tre, Via della Vasca Navale 84, I-00146 Roma, Italy;3. Comenius University, Department of Nuclear Physics and Biophysics, Mlynska dolina F-1, 84248 Bratislava, Slovakia;4. Preparatory Commission for the Comprehensive Nuclear Test-Ban-Treaty Organization (CTBTO), Provisional Technical Secretariat, Vienna International Centre, PO Box 1200, 1400 Vienna, Austria;1. International Data Centre, Comprehensive Nuclear-Test-Ban Treaty Organization, PO Box 1200, 1400 Vienna, Austria;2. Australian Nuclear Science and Technology Organisation (ANSTO), Locked Bag 2001, Kirrawee DC, NSW 2232, Australia;1. KU Leuven, CIB, Celestijnenlaan 300, Box 2422, 3001 Leuven, Belgium;2. SCK?CEN, Belgian Nuclear Research Centre, Boeretang 200, 2400 Mol, Belgium;3. KU Leuven, Department of Mathematics, Celestijnenlaan 200B, 3001 Leuven, Belgium;1. Korea Institute of Nuclear Safety, 62 Gwahak-ro, Yuseong-gu, Daejeon 305-338, Republic of Korea;2. Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, Republic of Korea;3. Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea;4. Pusan National University, 2 Busandaehak-ro 63 Beon-gil, Geumjeong-gu, Busan 609-735, Republic of Korea
Abstract:Atmospheric dispersion models based on the Gaussian line source formulation tend to give poor results for low wind speed and parallel wind directions. Certain dispersion models like HIWAY-2 have an inbuilt dispersion algorithm to adjust in such situations but no correction exists for mathematical based Gaussian dispersion models. We evaluate the performance of a hybrid model a mathematical model, to assess its suitability as an alternative to the Gaussian based models.
Keywords:
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