The vertical distribution of NO3 in the atmospheric boundary layer |
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| Institution: | 1. USDA-Agricultural Research Service, Wind Erosion and Water Conservation Research Unit, 302 W. I-20, Big Spring, TX 79720, USA;2. Loughborough University, Department of Geography, FM Building Margaret Keay Rd. Leicestershire, LE11 3TU, UK;3. USDA-Agricultural Research Service, Wind Erosion and Water Conservation Research Unit, 3810 4th St., Lubbock, TX 79415, USA;4. University of California, Department of Environmental Sciences, Policy and Management, 130 Milford #3114, Berkley, CA 94720-3114, USA;5. Temple University, Department of Earth and Environmental Science, 1901 N. 13th St., Philadelphia, PA 19122, USA;6. North Carolina State University, Department of Forestry and Environmental Resources, Campus Box 8008, Raleigh, NC 27695, USA;1. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences (CAS), Beijing 100029, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China;4. Institute of Environmental Physics and Remote Sensing, IUP, University of Bremen, D-28203 Bremen, Germany;5. Center of Marine Environmental Sciences, MARUM, University of Bremen, D-28203 Bremen, Germany;6. Energy, Environment and Water Research Center, the Cyprus Institute, CY2121 Nicosia, Cyprus |
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| Abstract: | Recent urban measurements suggest that NO3 concentrations vary significantly with altitude in the lowest few hundred metres of the atmosphere. Calculations using a one-dimensional boundary layer model show that NO3 concentrations are small near the ground and increase with altitude to a maximum near the top of the nocturnal boundary layer (NBL). These results show that the NBL is not well mixed, and that where there are surface sources and sinks two-box models of the NBL are inadequate, and surface measurements are not representative and may lead to an underestimate of the oxidising capacity of the atmosphere. |
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