References

AMT

Atmospheric Measurement Techniques

AMT

Atmos. Meas. Tech.

1867-8548

Copernicus Publications

Göttingen, Germany

10.5194/amt-6-2277-2013

Observations of SO2 and NO2 by mobile DOAS in the Guangzhou eastern area during the Asian Games 2010

F. C.

¹ Xie

P. H.

¹ Li

¹ Chan

K. L.

¹ ² Hartl

² Wang

https://orcid.org/0000-0002-9828-9871

³ Si

F. Q.

¹ Zeng

¹ Qin

¹ Xu

¹ Liu

J. G.

¹ Liu

W. Q.

¹ Wenig

Key Laboratory of Environmental Optical and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, China

School of Energy and Environment, City University of Hong Kong, Hong Kong, China

Meteorological Institute, Ludwig-Maximilians-Universität München, Munich, Germany

04 09 2013

6 9 2277 2292

2013

This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/

This article is available from https://amt.copernicus.org/articles/6/2277/2013/amt-6-2277-2013.html

The full text article is available as a PDF file from https://amt.copernicus.org/articles/6/2277/2013/amt-6-2277-2013.pdf

Mobile passive differential optical absorption spectroscopy measurements of SO2 and NO2 were performed in the Guangzhou eastern area (GEA) during the Guangzhou Asian Games 2010 from November 2010 to December 2010. The observations were carried out between 10:00 to 13:00 (local time, i.e., during daylight). Spatial and temporal distributions of SO2 and NO2 in this area were obtained and emission sources were determined using wind field data. The NO2 vertical column densities were found to agree with Ozone Monitoring Instrument values. The correlation coefficient (referred to as R2) was 0.88 after cloud filtering within a specific ground pixel. During the Guangzhou Asian Games and Asian Paralympics (Para) Games, the SO2 and NOx emissions in the area were quantified using averaged wind speed and wind direction. For times outside the games the average SO2 emission was estimated to be 9.50 ± 0.90 tons per hour and the average NOx emission was estimated to be 5.87 ± 3.46 tons per hour. During the phases of the Asian and Asian Para Games, the SO2 and NOx emissions were reduced by 53.50% and 43.50%, respectively, compared to the usual condition. We also investigated the influence of GEA on Guangzhou University Town, the main venue located northwest of the GEA, and found that SO2 concentrations here were about tripled by emissions from the GEA.

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