Early warning method of lake and reservoir eutrophication based on data assimilation

A technology of eutrophication and data assimilation, applied in data processing applications, electrical digital data processing, special data processing applications, etc., can solve the problem of low accuracy of eutrophication early warning in lakes and reservoirs, and achieve the effect of improving accuracy

Active Publication Date: 2018-12-25
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

[0003] Existing lake eutrophication early warning methods can only rely on a single data source for monitoring and early warning, resulting in low accuracy of lake eutrophication early warning

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  • Early warning method of lake and reservoir eutrophication based on data assimilation
  • Early warning method of lake and reservoir eutrophication based on data assimilation
  • Early warning method of lake and reservoir eutrophication based on data assimilation

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[0060] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0061] Lakes are usually important drinking water sources, and the eutrophication of lakes is a serious threat to human drinking water safety. The occurrence of algal blooms and eutrophication in lakes and reservoirs is jointly affected by meteorology, hydrodynamic conditions, pollution load input, and water quality in lakes and reservoirs.

[0062] In the present invention, there are three kinds of data sources for reservoir eutrophication early warning: 1. satellite remote sensing data; 2. surface monitoring data; Predicted values ​​of monitoring indicators predicted ...

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Abstract

The invention provides a lake and reservoir eutrophication early warning method based on data assimilation. The method comprises obtaining satellite remote sensing data monitored at a point in time inthe study area; establishing the hydrodynamic water quality and aquatic ecological process model of the study area; the data assimilation algorithm being used to realize the assimilation of the modelresults and monitoring data, and the hydrodynamic water quality and aquatic ecological process model being used to predict the water quality and realize the lake and reservoir eutrophication early warning. As the ground monitor data are monitored by the invention, the satellite remote sensing data and the monitoring indexes predicted by the hydrodynamic water quality and aquatic ecological process model are fused with multi-source and multi-scale data, in the prediction process of a hydrodynamic water quality and aquatic ecological process model, the uncertainty of a hydrodynamic water quality and aquatic ecological process model is corrected by an assimilation algorithm, which improves the accuracy of lake and reservoir eutrophication early warning comprehensively.

Description

technical field [0001] The invention belongs to the technical field of early warning of eutrophication of lakes and reservoirs, and in particular relates to a method for early warning of eutrophication of lakes and reservoirs based on data assimilation. Background technique [0002] Eutrophication of lakes and reservoirs refers to the excessive intake of nutrients such as nitrogen and phosphorus in lakes and reservoirs, causing abnormal reproduction of algae and other aquatic organisms in the water, changes in water transparency and dissolved oxygen, resulting in deterioration of lake water and accelerated lake aging. As a result, the ecology and water functions of lakes and reservoirs are hindered and destroyed. Early warning and monitoring of the ecological state of lakes and reservoirs is an important means to judge its development trend and formulate corresponding countermeasures. [0003] Existing lake eutrophication early warning methods can only rely on a single data...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06F17/30
CPCG06Q10/04G06Q10/0635Y02A20/152
Inventor 杜彦良王力王世岩王亮刘畅赵鸣雁韩祯
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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