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Atmosphere 2016, 7(1), 4; doi:10.3390/atmos7010004

Multi-Scale Observations of Atmosphere Environment and Aerosol Properties over North China during APEC Meeting Periods

1
State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth of Chinese Academy of Sciences, Beijing 100101, China
2
University of Chinese Academy of Sciences, Beijing 100049, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Robert W. Talbot
Received: 30 September 2015 / Revised: 17 December 2015 / Accepted: 25 December 2015 / Published: 31 December 2015
View Full-Text   |   Download PDF [8085 KB, uploaded 31 December 2015]   |  

Abstract

This paper reveals a study on air pollution process over North China, applying remote sensing technology, using satellite observation and in situ measurements during the twenty-first Asia-Pacific Economic Cooperation (APEC) meeting, which was held in Beijing between 6 and 12 November when the clear weather was called “APEC-Blue”. In the meantime, pollutants concentrations including PM2.5 and PM10 in Beijing were lower than 100 μg/m3 owing to the effective government measures and policies, as well as meteorological conditions. High aerosol loading (AOD > 1) was observed over south of Beijing and vertical observations showed that the pollutants were prominent near the land surface. Different from the meeting period, high pollutants concentrations with explosive growth (the values of PM2.5 and PM10 peaking at 291 μg/m3 and 360 μg/m3 respectively) appeared over Beijing after the meeting period, accompanied by strong temperature inversion and high Relative Humidity (RH) values. The pollution particles transferred from Beijing area to south part of North China. Otherwise, fine-mode particles with strong absorption characteristic (UVAI > 1.5, AOD > 1) covered the Beijing sky in the meantime, indicating the existence of black carbon aerosols. View Full-Text
Keywords: APEC; atmosphere environment; aerosol; optical properties; meteorological condition; satellite data APEC; atmosphere environment; aerosol; optical properties; meteorological condition; satellite data
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wei, X.; Gu, X.; Chen, H.; Cheng, T.; Wang, Y.; Guo, H.; Bao, F.; Xiang, K. Multi-Scale Observations of Atmosphere Environment and Aerosol Properties over North China during APEC Meeting Periods. Atmosphere 2016, 7, 4.

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