METEOROLOGICAL AND CHEMICAL CONTROLS ON THE VERTICAL DISTRIBUTION OF BEIJING SUMMER COARSE AND FINE AEROSOLS

Wang Mingxing; John W. Winchester; Lü Weixiu; Ren Lixin; Hong Zhongxiang

doi:10.1007/BF02657933

Impact Factor: 5.8

Volume 3 Issue 4

Oct. 1986

Article Contents

Article > ADVANCES IN ATMOSPHERIC SCIENCES > 1986 > 3(4): 432-442

METEOROLOGICAL AND CHEMICAL CONTROLS ON THE VERTICAL DISTRIBUTION OF BEIJING SUMMER COARSE AND FINE AEROSOLS

1.
Institute of Atmospheric Physics, Academia Sinica, Beijing,Institute of Atmospheric Physics, Academia Sinica, Beijing,Institute of Atmospheric Physics, Academia Sinica, Beijing,Institute of Atmospheric Physics, Academia Sinica, Beijing,Institute of Atmospheric Physics, Academia Sinica, Beijing

doi: 10.1007/BF02657933

Abstract
References
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Abstract:
Vertical profiles of fine and coarse aerosol particles were determined by cascade impactors at the me-teorological tower in Beijing for three days and one night, July 18-23, 1980. Coarse mode aerosols showed a maximum concentration at 47 m when there was an inversion at about 140 m height, and a rather uniform distribution when there was no inversion. This may indicate a two-component origin of coarse particles at the tower site, one being surface dust and the other being tall stack emissions. Fine mode aerosols showed more complex vertical profiles. Median particle size distributions of most metals were bimodal, indicating distinct coarse particle dispersion and fine accumulation mode processes. A chemical thermodynamic cal-culation indicates that fine mode Si can result from the reduction of silica to volatile SiO during coal combustion with limited air supply, a process which should release substantial amounts of carbon monoxide to the atmosphere.
References

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Manuscript History

Manuscript received: 10 October 1986

Manuscript revised: 10 October 1986

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

METEOROLOGICAL AND CHEMICAL CONTROLS ON THE VERTICAL DISTRIBUTION OF BEIJING SUMMER COARSE AND FINE AEROSOLS

1. Institute of Atmospheric Physics, Academia Sinica, Beijing,Institute of Atmospheric Physics, Academia Sinica, Beijing,Institute of Atmospheric Physics, Academia Sinica, Beijing,Institute of Atmospheric Physics, Academia Sinica, Beijing,Institute of Atmospheric Physics, Academia Sinica, Beijing

Manuscript received: 1986-10-10
Manuscript revised: 1986-10-10

Abstract: Vertical profiles of fine and coarse aerosol particles were determined by cascade impactors at the me-teorological tower in Beijing for three days and one night, July 18-23, 1980. Coarse mode aerosols showed a maximum concentration at 47 m when there was an inversion at about 140 m height, and a rather uniform distribution when there was no inversion. This may indicate a two-component origin of coarse particles at the tower site, one being surface dust and the other being tall stack emissions. Fine mode aerosols showed more complex vertical profiles. Median particle size distributions of most metals were bimodal, indicating distinct coarse particle dispersion and fine accumulation mode processes. A chemical thermodynamic cal-culation indicates that fine mode Si can result from the reduction of silica to volatile SiO during coal combustion with limited air supply, a process which should release substantial amounts of carbon monoxide to the atmosphere.