A Quantitative Decomposition Method of Runoff Change Based on Improved Budyko Formula

A runoff, formula technology, applied in the direction of using multiple variables to indicate weather conditions, measurement devices, design optimization/simulation, etc., can solve the problem of neglecting land water reserves, etc., to improve the accuracy, high accuracy and reliability of runoff prediction Effect

Active Publication Date: 2022-06-17
ZHEJIANG UNIV
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Problems solved by technology

However, this assumption often ignores the impact of land water storage on watershed runoff changes, and mainly considers changes in watershed state on a long-term scale, which may lead to large differences between the obtained analysis results and actual results, especially in The above differences are more obvious in regions with significant changes in terrestrial water storage

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  • A Quantitative Decomposition Method of Runoff Change Based on Improved Budyko Formula
  • A Quantitative Decomposition Method of Runoff Change Based on Improved Budyko Formula
  • A Quantitative Decomposition Method of Runoff Change Based on Improved Budyko Formula

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Embodiment Construction

[0103] The implementation case will be explained in detail below with reference to the following drawings.

[0104] The invention proposes a quantitative decomposition method of runoff change based on the improved Budyko formula, which not only considers the influence of terrestrial water storage change on the hydrological cycle process, but also quantifies the contribution of different hydrological variables to the runoff change. like figure 1 Shown is the flow chart of the method of the present invention.

[0105] A quantitative decomposition method of runoff change based on the improved Budyko formula, comprising the following steps:

[0106] Step 1: Obtain the main hydrological variables of the research basin, including precipitation, runoff, maximum temperature, minimum temperature, wind speed, relative humidity, sunshine duration, evapotranspiration, etc., and calculate the potential potential of the basin based on the Penman-Monteith formula evapotranspiration;

[01...

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Abstract

The invention discloses a quantitative decomposition method for runoff change based on the improved Budyko formula. The main steps are as follows: first, obtain the main hydrological variables of the research basin and estimate the potential evapotranspiration sequence of the basin; Land water storage change sequence, and coupled to the original Budyko formula to obtain the improved Budyko formula; then according to the improved Budyko formula to construct the mathematical model of the research basin in the state of hydrothermal coupling equilibrium; finally, further quantify based on the definition of sample variance The contribution of different variables to runoff change, and the main driving factors of runoff change in the research basin are analyzed and summarized. The method of the present invention not only considers the impact of changes in land water storage on the hydrological cycle of the watershed, but also can perform attribution and quantitative analysis on the runoff changes in the research watershed, and provides a new method for runoff prediction and extreme flood disaster event forecasting under changing environments Theoretical support and technical support.

Description

technical field [0001] The invention belongs to the field of runoff change attribution analysis in the field of hydrology and water resources, in particular to a quantitative decomposition method of runoff change based on an improved Budyko formula. Background technique [0002] Water resources are the most fundamental and necessary elements for the development of human society and industrial progress. Runoff is the most important form of water resources on earth, and it is also the main source of water resources for social development and industrial progress. In recent years, with the increasingly significant climate change and the gradual increase of human activities, the hydrological cycle process in different study areas around the world has undergone significant changes, aggravating the serious uneven distribution of water resources in different basins in time and space, and causing more Extreme drought and flood events seriously threaten the water security of regional...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G01W1/02G06F113/08
CPCG06F30/20G01W1/02G06F2113/08
Inventor 谢京凯钟华王奕童郭玉雪许月萍
Owner ZHEJIANG UNIV
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