Scattering Properties of Atmospheric Aerosols over Lanzhou City and Applications Using an Integrating Nephelometer

ZHANG Wu; HU Bo; CHEN Changhe; DU Ping; ZHANG Lei; FENG Guanghong

doi:10.1007/BF02915587

Impact Factor: 5.8

Volume 21 Issue 6

Nov. 2004

Article Contents

Article > ADVANCES IN ATMOSPHERIC SCIENCES > 2004 > 21(6): 848-856

Scattering Properties of Atmospheric Aerosols over Lanzhou City and Applications Using an Integrating Nephelometer

1.
College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000,College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000;Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing,100029,College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000,College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000,College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000,College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000

doi: 10.1007/BF02915587

Abstract
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Abstract:
The data, measured by a three-wavelength Integrating Nephelometer over Lanzhou City during the winters of 2001/2002 and 2002/2003 respectively, have been analyzed for investigating the scattering properties of atmospheric aerosols and exploring their relationship and the status of air pollution. The aerosol particle volume distribution is inverted with the measured spectral scattering coefficients. The results show that the daily variation of the aerosol scattering coefficients is in a tri-peak shape. The average ratio of backscattering coefficient to total scattering coefficient at 550 nm is 0.158; there exists an excellent correlation between the scattering coefficients and the concentration of PM10. The average ratio of the concentration of PM10 to the scattering coefficients is 0.37 g m-2, which is contingent on the optical parameters of aerosol particles such as the size distribution, etc.; an algorithm is developed for inverting the volume distribution of aerosol particles by using the histogram and Monte-Carlo techniques, and the test results show that the inversion is reasonable.
- three-wavelength Integrating Nephelometer,
- aerosol spectral scattering coefficient,
- PM10,particle volume distribution
References

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Manuscript History

Manuscript received: 10 November 2004

Manuscript revised: 10 November 2004

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

Scattering Properties of Atmospheric Aerosols over Lanzhou City and Applications Using an Integrating Nephelometer

1. College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000,College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000;Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing,100029,College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000,College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000,College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000,College of Atmospheric Sciences, Lanzhou University, Lanzhou,730000

Manuscript received: 2004-11-10
Manuscript revised: 2004-11-10

Abstract: The data, measured by a three-wavelength Integrating Nephelometer over Lanzhou City during the winters of 2001/2002 and 2002/2003 respectively, have been analyzed for investigating the scattering properties of atmospheric aerosols and exploring their relationship and the status of air pollution. The aerosol particle volume distribution is inverted with the measured spectral scattering coefficients. The results show that the daily variation of the aerosol scattering coefficients is in a tri-peak shape. The average ratio of backscattering coefficient to total scattering coefficient at 550 nm is 0.158; there exists an excellent correlation between the scattering coefficients and the concentration of PM10. The average ratio of the concentration of PM10 to the scattering coefficients is 0.37 g m-2, which is contingent on the optical parameters of aerosol particles such as the size distribution, etc.; an algorithm is developed for inverting the volume distribution of aerosol particles by using the histogram and Monte-Carlo techniques, and the test results show that the inversion is reasonable.

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