Abstract relates to a poster presentation at the EGU 2017 General Assembly. Abstract is available via Official URL link

Dunmore, Rachel

Fu, Pingqing

Hamilton, Jacqueline

Lee, James

Lewis, Alastair

Mullinger, Neil

Nemitz, Eiko

Squires, Freya

Vaughan, Adam

Wild, Oliver

Zhang, Qiang

NERC Open Research Archive

Geophysical Research AbstractsVol. 19, EGU2017-5003-1, 2017EGU General Assembly 2017© Author(s) 2017. CC Attribution 3.0 License.Measurement of NOx fluxes from a tall tower in BeijingFreya Squires (1), Rachel Dunmore (1), Alastair Lewis (1,2), Adam Vaughan (1), Neil Mullinger (3), EikoNemitz (3), Oliver Wild (4), Qiang Zhang (5), Jacqueline Hamilton (1), James Lee (1,2), and Pingqing Fu (6)(1) Wolfson Atmospheric Chemistry Laboratories, University of York, United Kingdom, (2) National Centre for AtmosphericScience, University of York, United Kingdom, (3) Centre for Ecology and Hydrology, Edinburgh, United Kingdom, (4)Lancaster Environment Centre, Lancaster University, United Kingdom, (5) Beijing Key Laboratory of Green ReactionEngineering and Technology, Tsinghua University, China, (6) Institute of Atmospheric Physics, Chinese Academy ofSciences, Beijing, ChinaNitrogen Oxides (NOx, the sum of nitrogen monoxide (NO) and nitrogen dioxide (NO2)) are significant anthro-pogenic pollutants emitted from most combustion processes. NOx is a precursor species to the formation of O3 andsecondary aerosols and, in high concentrations, NO2 can have adverse effects on human health through action as arespiratory irritant. For these reasons, there has been increased focus on improving NOx emissions inventories, typ-ically developed using ‘bottom-up’ estimates of emissions from their sources, which are used to predict current andfuture air quality and to guide abatement strategy. Recent studies have shown a discrepancy between NOx inven-tories and measured NOx emissions for UK cities, highlighting the limitations of bottom-up emissions inventoriesand the importance of accurate measurement data to improve the estimates. Similarly, inventories in China areassociated with large uncertainties and are rapidly changing with time in response to economic development andnew environmental regulation.Here, we present data collected as part of the Air Pollutants in Beijing (AIRPOLL-Beijing) campaign from anurban site located at the Institute of Atmospheric Physics, Chinese Academy of Sciences (IAP, CAS) (39˚58’28”N,116˚22’16”E) in central Beijing. NOx concentrations were measured using a state-of-the-art chemiluminescenceinstrument, sampling from an inlet at 100 metres on a meteorological tower. Measurements at 5 Hz coupled withwind vector data measured by a sonic anemometer located at the same height as the inlet allowed NOx emissionfluxes to be calculated using the eddy covariance method. Measurements were made during the period 11/11/2016 –10/12/2016 and compared to existing emission estimates from The Multi-resolution Emission Inventory for China(MEIC) inventory. It is anticipated that this work will be used to evaluate the accuracy of emissions inventories forBeijing, to develop improved emissions estimates and thus provide greater information about the sources of NOxin the city.

Measurement of NOx fluxes from a tall tower in Beijing

http://nora.nerc.ac.uk/id/eprint/519453/1/N519453AB.pdf

Measurement of NOx fluxes from a tall tower in Beijing

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