Method and device for predicting daily runoff during snowmelt period

Abstract

The invention discloses a prediction method and device of the day runoff volume of a snowmelt period. The method comprises the steps that the variable data and the measuring parameter data of an n day snowmelt zone drainage basin in the current snowmelt period are obtained; the water-recession coefficient kn + 1 of an n + 1 day snowmelt zone drainage basin in the current snowmelt period is obtained; according to the variable data and the measuring parameter data of the n day snowmelt zone drainage basin and the water-recession coefficient kn + 1 of an n + 1 day snowmelt zone drainage basin, the water amount of snowmelt and rainfall in a drainage basin area A of the n + 1 day snowmelt zone drainage basin and the water-recession flow of river channel runoff in the drainage basin are computed; and the water amount of snowmelt and rainfall in the drainage basin area A of the n + 1 day snowmelt zone drainage basin and the water-recession flow of the river channel runoff in the drainage basin are combined, and the day runoff volume of the n + 1 day snowmelt zone drainage basin in the current snowmelt period is obtained by computing. According to the method and the device, the accuracy and the integrity of prediction of the day runoff volume of the snowmelt period can be improved.

Description

technical field [0001] The present invention relates to the field of data processing, in particular to a method and device for predicting daily runoff during a snowmelt period. Background technique [0002] The prediction of daily flow during the snowmelt period is generally realized through the snowmelt runoff model. At present, the methods used to predict snowmelt runoff mainly fall into two categories: conceptual models and physical models, that is, snowmelt runoff models can be divided into two categories: conceptual models and physical models. The degree-day model is the most widely used conceptual model and is an integral part of many hydrological models. [0003] Most of the conceptual models are based on the "degree-day" model to calculate the snowmelt runoff. The "degree-day" model is established based on the linear relationship between ice and snow melting and air temperature, especially the positive accumulated temperature on the surface of ice and snow. The gen...

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Problems solved by technology

[0015] Aiming at the problem that the method of predicting snowmelt runoff in the related art cannot simulate the daily runoff of the snowmelt period within a certain period of time, resulting in inaccurate prediction results, no effective solution has been proposed so far. Therefore, the main purpose of the present invention is to provide A method and device for predicting daily runoff during the snowmelt period to solve the above problems

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