Surface-atmosphere fluxes of volatile organic compounds in Beijing

1. Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK 10 2. State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Science, Ministry of Ecology and Environment, Guangzhou 510655, China 3. Wolfson Atmospheric Chemistry Laboratories, Department of Chemistry, University of York, York, YO10 5DD, UK 15 4. National Centre for Atmospheric Science, University of York, York. 5. Institute of Atmospheric Physics, Chinese Academy of Sciences, Huayanli 40, Chaoyang District, Beijing 100029, China 6. UK Centre for Ecology & Hydrology, Library Ave, Bailrigg, Lancaster LA1 4AP, UK 7. UK Centre for Ecology & Hydrology, Bush Estate, Penicuik, Midlothian, EH26 0QB, UK 20 8. Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich, Norfolk, NR4 7TJ, UK 9. Peking University, 5 Yiheyuan Road, Haidian District, Beijing 100871, China 10. National Ecological Observatory Network Program, Battelle, 1685 38th Street, Boulder, CO 80301, USA 25 11. Department of Atmospheric and Oceanic Sciences, University of Wisconsin Madison, 1225 West Dayton Street, Madison, WI 53706, USA 12. State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China 30 13. Ministry of Education Key Laboratory for Earth System Modelling, Department of Earth System Science, Tsinghua University, Beijing, China