Method and system for measuring atmospheric aerosol mass vertical conveying flux

A technology of atmospheric aerosol and measurement method, which is applied in the field of atmospheric detection and can solve problems such as the inability to measure aerosol mass flux

Active Publication Date: 2015-12-16
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In addition, the current eddy correlation method only measures the flux of aerosol number density, but cannot measure the mass flux of aerosols that people care about.

Method used

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  • Method and system for measuring atmospheric aerosol mass vertical conveying flux
  • Method and system for measuring atmospheric aerosol mass vertical conveying flux
  • Method and system for measuring atmospheric aerosol mass vertical conveying flux

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Embodiment

[0063] figure 1 It is a flow chart of a method for measuring the vertical transport flux of atmospheric aerosol mass provided by the embodiment of the present invention. Such as figure 1 As shown, it mainly includes the following steps:

[0064] Step 1. Calculate the real part of the atmospheric effective refractive index and the ratio of the atmospheric temperature to the real part of the atmospheric effective refractive index according to the measured atmospheric average temperature and atmospheric average pressure.

[0065] The gas components and aerosol particles in the atmosphere are regarded as an effective medium as a whole. The equivalent refractive index of the effective medium is called the effective refractive index, with n eff express. Order n Re and n Im represent the real and imaginary parts of the effective refractive index, namely n eff =n Re +n Im .

[0066] Among them, the real part of the atmospheric effective refractive index n Re The fluctuation...

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Abstract

The invention discloses a method for measuring atmospheric aerosol mass vertical conveying flux. The method comprises the following steps: calculating an atmospheric effective refractive index real part according to measured atmospheric average temperature and atmospheric average pressure intensity, and calculating a ratio of atmospheric temperature to the atmospheric effective refractive index real part; calculating an atmospheric effective refractive index imaginary part according to atmospheric visibility, and calculating a ratio of atmospheric aerosol mass concentration to the atmospheric effective refractive index imaginary part according to the change of the atmospheric aerosol mass concentration and the change of the atmospheric effective refractive index imaginary part; calculating the atmospheric aerosol mass vertical conveying flux according to the ratio of the atmospheric temperature to the atmospheric effective refractive index real part, the ratio of the atmospheric aerosol mass concentration to the atmospheric effective refractive index imaginary part and an atmospheric effective refractive index structure constant calculated by using a preset method. According to the method, the atmospheric aerosol mass vertical conveying flux can be objectively and accurately measured. The method has good time and space representativeness.

Description

technical field [0001] The invention relates to the technical field of atmospheric detection, in particular to a method and system for measuring vertical transport flux of atmospheric aerosol mass. Background technique [0002] At present, the impact of atmospheric aerosols has attracted great attention from the whole society. A large number of observations have been carried out, such as observations of particle concentrations for environmental protection, ground-based and remote sensing observation networks for tropospheric aerosol characteristics and radiative forcing studies (measurement of the entire layer aerosol optical depth, aerosol concentration, physical and chemical properties, etc.), and targeted concentrated scientific experiments, etc. In the past two decades, great progress has been made in the measurement of aerosol concentration, distribution, and aerosol physical and chemical properties. Learn that aerosols affect the Earth's energy budget by scattering a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/41
Inventor 袁仁民傅云飞
Owner UNIV OF SCI & TECH OF CHINA
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