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journal article May 05, 2015

Impact of Shanghai urban land surface forcing on downstream city ozone chemistry

Bin Zhu ORCID Hanqing Kang Tong Zhu ORCID Jifeng Su Xuewei Hou ORCID Jinhui Gao
Journal of Geophysical Research: Atmospheres Vol. 120 No. 9 pp. 4340-4351 · American Geophysical Union (AGU)
View at Publisher Save 10.1002/2014jd022859
Abstract
AbstractThe urban land surface has a significant impact on local urban heat island effects and air quality. In addition, it influences the atmospheric conditions and air quality in the downwind cities. In this study, the impact of Shanghai urban land surface forcing on weather conditions and air quality over Kunshan was investigated using the Weather Research and Forecasting model coupled with a multilayer urban canopy model and the Community Multiscale Air Quality model. Two simulations were conducted to identify the impact of upstream effects with and without upstream urban land surfaces in control and sensitivity experiments. The results show that the near‐surface temperature and boundary layer height over Kunshan increased significantly with the appearance of the upstream urban land surface. Horizontal transport of O3 and its precursors, from Shanghai to Kunshan, are suppressed in the lower boundary layer but are strengthened in the upper boundary layer because of strong urban heat island circulation. As a result, O3 chemical production is decreased in the lower boundary layer of Kunshan but is increased in the upper boundary layer. On average, daytime O3 concentrations over Kunshan are decreased by approximately 2 ppbv in the lower boundary layer but are increased by as much as 40 ppbv in the upper air.
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Metrics
52
Citations
45
References
Details
Published
May 05, 2015
Vol/Issue
120(9)
Pages
4340-4351
License
View
Authors
B
Bin Zhu

Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and Technology Nanjing China; Key Laboratory for Aerosol‐Cloud‐Precipitation of China Meteorological Administration Nanjing University of Information Science and Technology Nanjing China

H
Hanqing Kang

Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and Technology Nanjing China; Key Laboratory for Aerosol‐Cloud‐Precipitation of China Meteorological Administration Nanjing University of Information Science and Technology Nanjing China

T
Tong Zhu

CIRA Colorado State University Fort Collins Colorado USA; NOAA/NESDIS/STAR/JCSDA College Park Maryland USA

J
Jifeng Su

The 61 Squad of the 94857 Unit of People's Liberation Army Wuhu China

X
Xuewei Hou

Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and Technology Nanjing China; Key Laboratory for Aerosol‐Cloud‐Precipitation of China Meteorological Administration Nanjing University of Information Science and Technology Nanjing China

J
Jinhui Gao

Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and Technology Nanjing China; Key Laboratory for Aerosol‐Cloud‐Precipitation of China Meteorological Administration Nanjing University of Information Science and Technology Nanjing China

Funding
National Natural Science Foundation of China Award: 41275143
European Union Seventh Framework Programme Award: 606719
Natural Science Foundation of the Higher Education Institutions of Jiangsu Province, China Award: 12KJA170003
Cite This Article
Bin Zhu, Hanqing Kang, Tong Zhu, et al. (2015). Impact of Shanghai urban land surface forcing on downstream city ozone chemistry. Journal of Geophysical Research: Atmospheres, 120(9), 4340-4351. https://doi.org/10.1002/2014jd022859
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