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Fusion method and device for multi-source satellite aerosol optical thickness data

A technology of optical depth and data fusion, applied in the field of atmospheric satellite remote sensing, which can solve the problems of low observation time resolution, low data coverage, and difficulty in meeting large-scale analysis needs.

Active Publication Date: 2021-05-18
3CLEAR SCI & TECH CO LTD
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Problems solved by technology

However, defects such as satellite observation time, instrument accuracy, and inversion algorithms have seriously affected the value of a single AOD product. The AOD retrieval products of orbiting satellites are difficult to support the analysis of the fast-changing process of pollution. The coverage area of ​​geostationary satellites is relatively fixed, but due to the influence of clouds, the data coverage is relatively low, and the data coverage in southern China is only 40%-50%. , and it is difficult to meet a wide range of analysis needs

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  • Fusion method and device for multi-source satellite aerosol optical thickness data
  • Fusion method and device for multi-source satellite aerosol optical thickness data
  • Fusion method and device for multi-source satellite aerosol optical thickness data

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Embodiment Construction

[0033] The method and device for the fusion of multi-source satellite aerosol optical depth data provided by the present invention will be explained in detail below in conjunction with the accompanying drawings.

[0034] figure 1 It is a flow chart of the fusion method of multi-source satellite aerosol optical depth data provided by Embodiment 1 of the present invention.

[0035] Such as figure 1 As shown, in step S110, a data set of a geostationary satellite for a first preset time period is acquired, and a data set of a polar orbiting satellite for a second preset time period is acquired. To obtain satellite observation data to be processed, first determine the way to download satellite data, and then set the first preset time period for geostationary satellites such as Sunflower Himawari-8 / 9 geostationary satellites such as the L3 hour data set, polar orbiting satellites such as SuomiNPP-VIIRS polar orbiting satellites The second preset time period, such as the L2 minute ...

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Abstract

The invention discloses a fusion method and device for multi-source satellite aerosol optical thickness data. The method comprises the following steps: acquiring a data set of a stationary satellite in a first preset time period, and acquiring a data set of a polar orbit satellite in a second preset time period; preprocessing the aerosol optical thickness of the stationary satellite and the aerosol optical thickness of the polar orbit satellite in the acquired data set to obtain the aerosol optical thickness of the stationary satellite and the aerosol optical thickness of the polar orbit satellite in each geographic block in the same time period; and establishing a data fusion model, and performing data fusion on the preprocessed aerosol optical thickness of the stationary satellite and the aerosol optical thickness of the polar orbit satellite in each geographic block in the same time period by using the data fusion model. According to the method and the device, the polar orbit satellite and the stationary satellite are selected for data fusion, and the two satellites with different scanning orbits and different detector wavebands are used, so that the environmental information can be captured more comprehensively, and the problem of insufficient time and space resolution of single data is effectively solved.

Description

technical field [0001] The invention relates to the technical field of atmospheric satellite remote sensing, and more specifically, the invention relates to a fusion method and device for multi-source satellite aerosol optical depth data. Background technique [0002] Aerosol refers to a multiphase system composed of solid (such as dust, smoke particles, etc.) and liquid (such as cloud droplets composed of water and ice, ice crystals, etc.) particles suspended in the atmosphere and atmospheric carriers. As an important part of the earth-atmosphere system, aerosol has a significant and far-reaching impact on many aspects including environmental quality, climate change and human health. Existing studies have shown that the continuous accumulation and condensation growth of high-concentration aerosols under static and stable weather conditions is the main factor that produces large-scale persistent haze weather. [0003] The most basic optical properties of aerosol can be meas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
CPCG06F18/251G06F18/25
Inventor 梁倩吴剑斌陈焕盛肖林鸿秦东明王文丁樊旭
Owner 3CLEAR SCI & TECH CO LTD
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