Flood frequency calculation method and device under climate change scenario

A technology for climate change and flood frequency, applied in measurement devices, open-air water source surveys, instruments, etc., can solve the problem of low accuracy of simulated flood frequency, and achieve the effect of high accuracy and improved accuracy

Active Publication Date: 2021-06-25
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a method and device for calculating flood frequency under climate change scenarios, which solves the problem of low accuracy in simulating flood frequency

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  • Flood frequency calculation method and device under climate change scenario
  • Flood frequency calculation method and device under climate change scenario
  • Flood frequency calculation method and device under climate change scenario

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Embodiment Construction

[0045]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0046] Such as figure 1 As shown, the embodiment of the present invention provides a flood frequency calculation method under the climate change scenario, including the following steps:

[0047] Step 101. Obtain the historical flood monitoring data of the target section of the river within the preset historical time period, and obtain the climate change parameters within the forecast period, wherein the historical flood monitoring data includes the targ...

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Abstract

The present invention provides a flood frequency calculation method and device under a climate change scenario, the method comprising: acquiring historical flood monitoring data of a target section of a river within a preset historical time period, and acquiring climate change parameters within an estimated period; Determine the non-stationary GEV model based on the historical flood monitoring data; input the climate change parameters into the distributed hydrological model, and calculate the daily runoff of the target section of the river within the forecast period; according to the non-stationary GEV model and the daily runoff , to determine the flood frequency of the target section of the river during the projected period. In the embodiment of the present invention, the accuracy of the flood frequency determined according to the non-stationary GEV model and the daily runoff is relatively high, thereby improving the accuracy of the flood frequency within the simulation prediction period.

Description

technical field [0001] The invention relates to the technical field of climate change and hydrology and water resources, in particular to a flood frequency calculation method and device under a climate change scenario. Background technique [0002] In the history of the development of human society, floods have brought great threats to people's life safety and property safety. Therefore, in order to protect life and property, people usually count the hydrological data of rivers and calculate the frequency of rivers, and global climate change is an important factor affecting the frequency of floods. In practical applications, the frequency of floods is generally simulated by coupling climate data generated by statistical downscaling with deterministic hydrological models, but the accuracy is low. Contents of the invention [0003] The purpose of the embodiments of the present invention is to provide a method and device for calculating flood frequency under climate change s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C13/00
Inventor 鲁帆宋昕熠孙高虎赵勇肖伟华刘家宏
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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