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Runoff evolution uncertainty attribution method on basis of large-region hydrological simulation

A large-area, runoff technology used in instrumentation, computing, electrical and digital data processing, etc.

Active Publication Date: 2018-11-27
HOHAI UNIV
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Problems solved by technology

[0004] Purpose of the invention: To provide a spatial-temporal runoff evolution attribution method based on large-scale hydrological simulation that takes into account the uncertain evolution of model parameters and the diversity of attribution paths, so as to solve the above-mentioned problems existing in the prior art

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  • Runoff evolution uncertainty attribution method on basis of large-region hydrological simulation
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  • Runoff evolution uncertainty attribution method on basis of large-region hydrological simulation

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Embodiment Construction

[0055] The technical solutions of the present invention will be further specifically described below through embodiments in conjunction with the accompanying drawings.

[0056] In a further embodiment, the present invention creates a data set comprising hydrometeorological data, spatial data, and geographic feature data. In more detail, it includes: runoff monitoring data from hydrological stations, precipitation from meteorological stations, maximum temperature, minimum temperature, wind speed, relative humidity, solar radiation data, topographic and landform data, land use and cover data, soil type data, reservoir data, taken Water use data. The Mann-Kendall non-parametric test and Spearman's Rho test were used to describe the evolution characteristics of historical runoff and corroborate each other; the Pettitt test and ordered clustering method were used to determine the time when statistically significant changes in runoff occurred, and to divide the base period and the c...

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Abstract

The invention discloses a runoff evolution uncertainty attribution method on the basis of large-region hydrological simulation. Uncertainty temporal-spatial runoff evolution attribution due to model parameter uncertainty evolvement and attribution path diversity is taken into consideration by the aid of the runoff evolution uncertainty attribution method. The runoff evolution uncertainty attribution method includes steps of setting up datasets; describing historical runoff evolution laws; building large-region hydrological models; analyzing the sensitivity of model parameters; analyzing the calibration and the uncertainty of the model parameters; analyzing runoff evolution uncertainty attribution. The runoff evolution uncertainty attribution method has the advantages that all-region runoffchange attribution results can be obtained by the aid of limited runoff monitoring materials, and the uncertainty due to model parameter uncertainty progression and the attribution path diversity canbe taken into sufficient consideration.

Description

technical field [0001] The present invention designs runoff evolution attribution technology in the field of water conservancy engineering, and in particular relates to a spatial-temporal runoff evolution attribution based on large-scale hydrological simulation that takes into account the uncertain evolution of model parameters and the diversity of attribution paths. method. Background technique [0002] Runoff is one of the most important components of the hydrological cycle. Under the current changing environment, understanding the generation, change and potential causes of runoff is of great significance for efficient water resource management. The runoff process is closely related to many factors such as atmospheric circulation, climate change, the underlying surface in the watershed, and human society and economy. The runoff change is the comprehensive result of the joint and interwoven effects of these factors, which shows complex, changeable and unpredictable characte...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 钟平安张宇陈娟朱非林李洁玉刘为峰万新宇徐斌
Owner HOHAI UNIV
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