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Aerosol optical thickness inversion method based on remote sensing data

A technology of optical thickness and remote sensing data, applied in scientific instruments, measuring devices, suspension and porous material analysis, etc., can solve problems such as difficult to use, difficult to obtain data, missing data, etc., to facilitate prevention and management, and improve correlation , good effect

Inactive Publication Date: 2018-12-18
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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Problems solved by technology

At present, these two types of products have various deficiencies, such as NASA's products have low spatial resolution and missing data; the data released by my country's National Meteorological Satellite Center is difficult to obtain, and due to data format problems, it is also difficult to use

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  • Aerosol optical thickness inversion method based on remote sensing data
  • Aerosol optical thickness inversion method based on remote sensing data
  • Aerosol optical thickness inversion method based on remote sensing data

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Embodiment Construction

[0028] The invention uses the dark pixel method based on MODIS data to invert the aerosol optical thickness in order to obtain products with higher resolution and serve related research.

[0029] When the land surface is a uniform Lambertian surface and the atmosphere changes uniformly vertically, the satellite measurement can be expressed by the apparent reflectance. When the surface reflectance is small, the satellite observation reflectance mainly depends on the atmospheric contribution. When the surface reflectance is large, the contribution of the surface becomes the main contribution term. In this way, the basis of the inversion can be obtained: if the surface reflectance is known, the aerosol optical depth can be obtained by determining the atmospheric aerosol model.

[0030] dark pixel method

[0031] Different surface objects have different reflectivity. Therefore, it is very difficult to separate the path radiation item from the radiation value of the remote sensin...

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Abstract

The invention relates to an aerosol optical thickness inversion method based on remote sensing data. The aerosol optical thickness inversion is conducted by the dark-object method and a 6S radiation transfer model. The aerosol optical thickness inversion method comprises data acquisition, data synthesis, angle data synthesis, cloud detection, aerosol inversion, aerosol type determination, surfacereflectivity determination, distribution map production based on AOD of the inversion, and relationship between AOD and PM2.5 establishment. MODIS AOD data obtained based on the method can be used asan effective supplementary means for ground monitoring of PM2.5 concentration.

Description

technical field [0001] The invention relates to an aerosol optical depth inversion method based on remote sensing data. Background technique [0002] With the development of society, the harm of haze to the environment and human health has attracted more and more attention, and the prevention and control of haze and related research have become more and more urgent. Forests play a vital role in the virtuous cycle of the atmosphere. The branches and leaves of the trees in the forest can reduce the wind speed, help the dust in the air to settle, and can absorb the small dust particles in the air. In addition, forest vegetation can intercept, absorb, and retain PM2.5, and forests can reduce the harm of haze to human beings to a certain extent. Remote sensing technology can monitor forest vegetation and haze on a large scale. Therefore, using remote sensing data to explore the response of forest vegetation to haze and to clarify the quantitative and qualitative relationship be...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
CPCG01N15/06G01N15/075
Inventor 杨志高张贵龚奕霖王赛专
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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