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Computing method applied to atmospheric aerosol mass concentration horizontal route distribution

An atmospheric aerosol and mass concentration technology, which is applied in air quality improvement, measurement devices, analysis materials, etc., can solve the problem of inability to obtain high-resolution distribution characteristics of aerosol mass concentration.

Inactive Publication Date: 2017-02-08
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for calculating horizontal path distribution of atmospheric aerosol mass concentration to solve the problem that existing methods cannot obtain high-resolution distribution characteristics of aerosol mass concentration on a near-surface horizontal path

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  • Computing method applied to atmospheric aerosol mass concentration horizontal route distribution
  • Computing method applied to atmospheric aerosol mass concentration horizontal route distribution
  • Computing method applied to atmospheric aerosol mass concentration horizontal route distribution

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Embodiment Construction

[0033] Applied to the calculation method of horizontal path distribution of atmospheric aerosol mass concentration, it is characterized in that: based on the calculation theory of aerosol extinction coefficient-mass extinction coefficient-mass concentration, it considers different particle spectrum distributions, different pollution particle sources, and particle-water vapor interaction pair calculations The impact of the method, using the extinction data detected by the micro-pulse lidar, combined with the measurement data of the particle counter, aerosol mass concentration monitor and visibility meter, the horizontal path distribution of the urban near-surface aerosol is calculated. The specific process is as follows:

[0034] According to the Mie scattering theory, the aerosol extinction coefficient σ is calculated from the particle spectral distribution n(r) of the aerosol and its refractive index m e and the mass extinction coefficient as :in,

[0035] σ e =∫Q ext (m,r,...

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Abstract

The invention discloses a computing method applied to atmospheric aerosol mass concentration horizontal route distribution and can effectively solve the obtaining problem of an aerosol mass concentration real-time distribution situation caused by quick city near-ground aerosol distribution time-space change, non-uniform city pollution source distribution and the like. Only the aerosol mass concentration of a limited position in a zone can be obtained through common fixed-point monitoring, and an aerosol pollution time-space distribution characteristic in a certain route cannot be expressed. In order to solve a distribution situation of aerosol and pollutants in a near-ground horizontal route, the invention provides the computing method for obtaining aerosol mass concentration distribution in routes within 0 to 6 kilometers in real time by comprehensively utilizing a micropulse laser radar and combining a particle counter, a visibility meter and a particle mass concentration measuring instrument. Parameters of aerosol extinction coefficient, particle distribution, mass concentration and the like are associated through theoretical and mathematic models. According to the computing method disclosed by the invention, an effective technical support is provided for research on pollution sources of city aerosol and monitoring on dynamic variation.

Description

technical field [0001] The invention relates to the fields of air pollutant monitoring and environmental forecasting, in particular to a method for calculating horizontal path distribution of atmospheric aerosol mass concentration. Background technique [0002] Atmospheric aerosol is an important factor in atmospheric physical and chemical processes, and many fields of atmospheric science are related to aerosol. Atmospheric aerosols have an important direct and indirect impact on climate change. Aerosol particles absorb and scatter solar radiation, directly changing the energy budget of the earth-atmosphere system. With the rapid development of my country's economy and the continuous expansion of cities, the problem of urban air pollution caused by human activities has become increasingly prominent. PM 10 has been the main source of urban air pollutants, and fine particle PM 2.5 It is more significant in affecting visibility and endangering human health. Therefore, from ...

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/0032G01N33/0062Y02A50/20
Inventor 鲁先洋李学彬秦武斌崔生成刘庆朱文越徐青山
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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