—In this paper, the vertical distributions of
atmospheric particulate matter (PM2.5 and PM10) around
residential building and in open space in Beijing district are
measured and analyzed. The PM data in residential building
environment is obtained by measuring it at each floor windows
of the building, and the data in open space is obtained by
measuring it at a rising hot-air balloon. The vertical
distribution characteristics of PM concentration for different
conditions of wind speed and direction are discussed. It is found
that the distribution of PM concentration is in close association
with the changing of wind for both residential building
environment and open space. The results show that in breeze
day, the highest atmospheric particle concentration around the
residential building appears at a height about 20 m, and the
coverage heights (defined by PM value less than 80 of that on
ground) of PM2.5 and PM10 in free space are about 400 m and
100 m respectively; but for strong windy day, the distribution of
atmospheric particles tends to be smooth along the residential
building, and the coverage heights of PM2.5 and PM 10 in free
space are all about 300 m. This paper also investigates the
relationship between the vertical attenuation of PM
concentration and the speed of wind at different heights. The
natural accumulation phenomenon of atmospheric PM under
the effect of microgravity is observed.
—Air pollution, particle number concentration,
PM, vertical distribution.
Dawei Li is with the Institute of Lightwave Technology, Beijing Jiaotong
University, Beijing 100044, China (e-mail: firstname.lastname@example.org).
Yuening Bai is with the Experimental High School attached to Beijing
Normal University, Beijing 100032, China (e-mail: ellen.616@
Cite:Dawei Li and Yuening Bai, "Measurement and Analysis of the Vertical Distribution Characteristic of the Atmospheric Particle Concentration in Beijing District," International Journal of Environmental Science and Development vol. 5, no. 2, pp. 233-237, 2014.