Response analysis method for surface water quality to climate change

A technology for climate change and response analysis, applied in climate sustainability, ICT adaptation, data processing applications, etc., and can solve problems such as increased aquatic pollution and changes in pollutant toxicity.

Inactive Publication Date: 2016-12-07
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

Changes in radiation levels will lead to changes in the toxicity of some pollutants in water bodies. Macdonald et al. have proved through experiments that pollutants such as polycyclic aromatic hydrocarbons are exposed to ultraviolet radiation, leading to aggravation of aquatic biological pollution.

Method used

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  • Response analysis method for surface water quality to climate change
  • Response analysis method for surface water quality to climate change
  • Response analysis method for surface water quality to climate change

Examples

Experimental program
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Embodiment

[0047] Example: see figure 1 , a method for analyzing the response of surface water quality to climate change. The Hetao area with a well-developed irrigation system is selected for empirical research. The steps of the method are as follows:

[0048] (1) Prediction of the changing trend of climate change elements in the future

[0049] 1) Applicability evaluation of climate models

[0050] Select five climate models provided by the fifth phase of the International Coupled Model Intercomparison Program (CMIP5): GFDL-ESM2M, HadGEM2-ES, IPSL-CM5A-LR, MIROC-ESM-CHEM and NorESM1-M, respectively simulate RCP2.6, RCP4 .5. The precipitation under the three representative emission scenarios of RCP8.5 is compared with the measured value after calibration and downscaling. According to the calculated relative error, root mean square error and correlation coefficient characteristic value results, and each The model simulates the trend of change, and comprehensively analyzes and evaluates...

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Abstract

The invention discloses a response analysis method for surface water quality to a climate change. The method is characterized by comprising the following steps of: 1, prediction of a future climate change factor change trend, 2, building and calibration of an SWAT model, 3, calculation of total nitrogen and total phosphorus, and 4, a response of the surface water quality to the climate change. Compared with the prior art, the method based on future climate prediction, the SWAT hydrological model and statistical analysis simulates influences on the surface water quality change by climate change factors such as temperature and rainfall through setting different temperature change scenes and rainfall change scenes, simulation study on the water quality influences by the climate change is developed with the SWAT hydrological model as a basis, a response relation between the climate change and the water quality change is built, and response analysis of the surface water quality to the climate change can be carried out. The method of the invention can be widely applied to response study on the surface water quality to the climate change, particularly response analysis of the surface water quality in Hetao areas to the climate change.

Description

technical field [0001] The invention relates to the field of climate change response, in particular to a response analysis method of surface water quality to climate change. Background technique [0002] According to the IPCC 5th Assessment Report on Global Climate Change, climate change has become one of the current major environmental issues. Climate change is mainly reflected in the rise of global surface temperature and ocean temperature, the melting of Antarctic glaciers, changes in the temporal and spatial distribution of precipitation, and changes in the frequency and intensity of extreme climate events. Water resources are the primary factor in the hydrological cycle and atmospheric circulation. The increase in temperature caused by climate change changes the surface radiation, atmospheric circulation, and relative humidity, and changes the temporal and spatial distribution characteristics and intensity of precipitation, which will directly or indirectly affect evapo...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/06
CPCG06Q10/04G06Q10/0639Y02A90/10
Inventor 严登华翁白莎王浩秦天玲吕睿喆
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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