Real-time inversion method and device for vertical distribution of atmospheric pollutants, computer equipment and storage medium

Abstract

The invention discloses a real-time inversion method and device for vertical distribution of atmospheric pollutants, computer equipment and a storage medium, and the method comprises the steps: obtaining a high-resolution spectrum of multi-elevation observation, which is collected in real time through a hyper-spectral remote sensing technology, and carrying out the fitting of the high-resolution spectrum, so as to obtain the actual measurement light path total concentration corresponding to the multi-elevation observation of the atmospheric pollutants; simulating ground light intensity by using a radiation transmission model, performing partial differential on layered atmospheric pollutant distribution by the simulated light intensity to obtain a Jacobian matrix of the simulated light intensity, and converting the simulated light intensity into total concentration of a simulated light path by combining an atmospheric pollutant characteristic absorption section; and calculating a Jacobian matrix of the total concentration of the simulated light path by using the simulated light intensity Jacobian matrix in combination with the atmospheric pollutant characteristic absorption cross section, namely an iterative weighting function, and iteratively solving the vertical distribution of the atmospheric pollutants by using a least square method by using the obtained iterative weighting function. According to the method, the inversion calculation overhead can be reduced, online real-time inversion monitoring is realized, and meanwhile, the stability of inversion monitoring is ensured.

Description

technical field [0001] The invention relates to the field of optical measurement methods, in particular to a real-time inversion method, device, computer equipment and storage medium for the vertical distribution of atmospheric pollutants. Background technique [0002] The direct emission of particulate matter, secondary particulate matter, and polluting gases from various pollution sources has increased significantly, resulting in more rapid and drastic changes in the vertical distribution of tropospheric atmospheric aerosols and polluting gases. Atmospheric pollutants such as atmospheric aerosols and some trace gases have important hazards to the human body and the ecological environment. [0003] Among them, NO 2 It is one of the main trace gases of air pollution, which participates in the photochemical reaction of ozone generation and the generation of aerosol. NO 2 and atmospheric aerosols are harmful to human health. HCHO in the atmosphere is an important carcinoge...

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Problems solved by technology

Because the change of each layer requires a simulation to obtain the total concentration of the optical path, and the simulation of the total concentration of the standard optical path needs to solve the radiation transfer model once, the difference method to obtain the weight function of the total concentration of the optical path requires a total of profile layers + 1 radiation transfer The model simulates the total concentration of the light path, which greatly reduces the time efficiency of the optimal iterative estimation method, and cannot achieve real-time output of the vertical distribution of atmospheric pollutants

[0006] Therefore, the problems existing in the optimal estimation iterative inversion method and the look-up table method limit the application of hyperspectral remote sensing technology in real-time monitoring and traceability of atmospheric pollutants

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