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Three-dimensional variational assimilation method, system and storage medium for aerosol optical depth

A technology of optical thickness and three-dimensional variation, applied in the fields of informatics, computational theoretical chemistry, instruments, etc., can solve problems such as heavy workload and difficulty, difficult data assimilation research, unfavorable expansion of application of aerosol numerical models, etc. Certainty, the effect of improving forecast accuracy

Active Publication Date: 2022-03-29
JINAN UNIVERSITY +1
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Problems solved by technology

However, the workload and difficulty are huge, which is not conducive to the expansion and application of other aerosol numerical models, and it is also difficult to apply to other data assimilation studies

Method used

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  • Three-dimensional variational assimilation method, system and storage medium for aerosol optical depth
  • Three-dimensional variational assimilation method, system and storage medium for aerosol optical depth
  • Three-dimensional variational assimilation method, system and storage medium for aerosol optical depth

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specific Embodiment

[0072] combine figure 2 , to explain the above method in detail. The execution sequence of each step in the embodiment can be adjusted adaptively according to the understanding of those skilled in the art.

[0073] Such as figure 2 As shown, the three-dimensional variational assimilation method of aerosol optical depth in this embodiment mainly includes a data map assimilation preprocessing step and an AOD three-dimensional variational assimilation step.

[0074] Wherein, the data graph assimilation preprocessing step specifically includes the following steps:

[0075] Step S101: build the operating environment for WRF / Chem numerical model operation, including installing Linux operating system, compiler, parallel software and NETCDF function library;

[0076] Step S102: install the WRF / Chem model;

[0077] Step S103: setting corresponding simulation areas according to specific research areas;

[0078] Step S104: According to the simulation area set in S103, prepare corr...

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Abstract

The invention discloses a three-dimensional variational assimilation method, system and storage medium of aerosol optical thickness, wherein the method utilizes AOD inversion data (which can be satellite AOD observation data) under the premise of comprehensively considering numerical model errors and observation data errors and ground-based AOD observation data), through the three-dimensional variational assimilation method, the initial field of the aerosol components of the numerical model is corrected to reduce the uncertainty of the initial field, thereby improving the accuracy of subsequent aerosol simulation predictions, and by calling the radiation The AOD tangent operator and adjoint operator inside the transmission model are coupled with the Fast-J optical module to construct the FastJ / CRTM-AOD assimilation module, which greatly improves the development efficiency of the application of AOD three-dimensional variational assimilation in different aerosol solutions , which can be widely used in the technical field of three-dimensional variational assimilation.

Description

technical field [0001] The invention relates to the technical field of three-dimensional variational assimilation, in particular to a method, system and storage medium for three-dimensional variational assimilation of aerosol optical thickness. Background technique [0002] Aerosol refers to the multiphase mixed state particulate matter (Particulate Matter, PM) composed of solid or liquid particles and gas carriers suspended in the atmosphere. The main components include black carbon, organic carbon, sulfate, nitrate, ammonium salt, ocean , crustal elements and many other species. With the rapid development of China's economy, air pollution is becoming more and more serious, and aerosol pollution has become a domestic and international social and scientific research hotspot. In recent years, the country has invested a lot of manpower and material resources to improve the atmospheric environment. Although the governance has improved, important pollution incidents with PM2.5 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G16C10/00
CPCG16C10/00
Inventor 庞炯明王雪梅
Owner JINAN UNIVERSITY
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