Hourly water temperature forecasting method for rivers

A water temperature and river technology, applied in the direction of forecasting, complex mathematical operations, data processing applications, etc., can solve the problems of difficult data acquisition, poor universality, and a large amount of measured data, so as to achieve reasonable forecast results, improve accuracy, and base The effect of less data

A water temperature and river technology, applied in the direction of forecasting, complex mathematical operations, data processing applications, etc., can solve the problems of difficult data acquisition, poor universality, and a large amount of measured data, so as to achieve reasonable forecast results, improve accuracy, and base The effect of less data

CN109359772AActive Publication Date: 2019-02-19HOHAI UNIV
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  • Hourly water temperature forecasting method for rivers
  • Hourly water temperature forecasting method for rivers
  • Hourly water temperature forecasting method for rivers

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Embodiment Construction

[0025] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] figure 1 It is the flowchart of the hourly water temperature forecasting method of the river of the present invention, and its specific method comprises the following steps:

[0027] (1) Use sensors to collect at least one year’s historical water temperature data and historical temperature data of the river’s predicted location, and use a composite sine function to fit the historical water temperature data and historical temperature data respectively to obtain a fitting curve, and calculate the historical data through the curve The simulated values ​​of daily maximum water temperature, minimum water temperature, maximum air temperature, and minimum air temperature within the covered time period; expand the time definition domain of the fitted composite sine function curve, and calculate the maximum water temperature, mi...

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Abstract

The invention discloses a hourly water temperature forecasting method for rivers. The method includes that that compound sinusoidal function is used to fit the historical water temperature of river, and the temperature data; calculate the highest and lowest water temperature and the initial value of air temperature prediction on the day to be predicted; constructing the corresponding relationshipbetween water temperature change and air temperature change in rivers; calculating the confidence intervals of the highest and lowest temperature meteorological forecasts on the day to be forecasted;revising the initial values of the maximum and minimum water temperature forecasts for the day; the hourly probability forecast of river water temperature is carried out by using the composite cosinefunction. The invention realizes the hourly probability forecast of river water temperature, improves the precision of water temperature forecast, and fills the blank of hourly water temperature datademand in the area without data.

Description

technical field [0001] The invention relates to a water temperature prediction method, in particular to an hourly water temperature prediction method for rivers based on compound sine and cosine. Background technique [0002] Mastering the dynamic changes of water temperature in rivers and canals is of great significance in the fields of river ecological environment assessment and industrial intake and drainage scheme design. On the one hand, the water quality of rivers is extremely vulnerable to the impact of human activities such as pollution or water conservancy projects. Once the natural state of river water quality is damaged, there will be many changes such as the decline of water environment quality and the loss of biodiversity. The change of water temperature is one of them. one. Water temperature is one of the important indicators of water environment factors. Changes in water temperature directly affect changes in water environment quality and are closely related ...

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Application Information

Patent Timeline
19 Feb 2019
Publication
CN109359772A
IPC
G06Q10/04; G06F17/18; G06F17/15
CPC
G06F17/15; G06F17/18; G06Q10/04
Inventors
陈钢; 翟月