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Flood frequency calculation method and device under climate change situation

A technology for climate change and flood frequency, applied in measuring devices, open-air water source surveys, instruments, etc., can solve the problem of low accuracy in simulating flood frequency

Active Publication Date: 2019-06-11
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 situation
  • Flood frequency calculation method and device under climate change situation
  • Flood frequency calculation method and device under climate change situation

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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] like 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 target ...

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Abstract

The invention provides a flood frequency calculation method and device under the climate change situation. The flood frequency calculation method comprises the steps that flood monitoring historical data of a target section of a river in a preset historical period is obtained, and climate change parameters in an estimated period is obtained; a non-stationary GEV model is determined according to the flood monitoring historical data; the climate change parameters are input into a distributed hydrological model to calculate the daily runoff volume of the target section of the river within the estimated period; and the flood frequency of the target section of the river in the estimated period is determined according to the non-stationary GEV model and daily runoff volume. In the embodiment ofthe invention, the accuracy of the flood frequency determined according to the non-stationary GEV model and daily runoff volume is relatively high, and thus the accuracy of the flood frequency in thesimulation estimated period is improved.

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 Applications(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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