A Water Resource Scheduling Method Based on Land-atmosphere Coupling

Abstract

The present invention relates to a water resources scheduling method based on land-atmosphere coupling, comprising the following steps: step 1, carrying out rainfall forecasting according to the numerical atmospheric model WRF; step 2, setting parameters of the Hebei rain and flood model; step 3, forecasting rainfall Drive the Hebei rain and flood model to forecast runoff; step 4, determine the water resources dispatching plan according to the runoff forecast. From the perspective of improving runoff forecasting accuracy and prolonging runoff forecasting period, the present invention provides a water resources scheduling method based on land-air coupling, which can provide sufficient time for decision makers to formulate water resource scheduling plans, and can more accurately judge reservoirs Store and discharge water, make full use of limited water resources, and maximize water supply benefits. It is especially suitable for areas in the north that are greatly affected by human activities. Because it is combined with meteorological forecasts, rolling forecasts of rainfall and runoff can be realized, providing water conservancy and other related services. The department provides a reasonable basis for water resources dispatching, which is universally applicable.

Description

technical field [0001] The invention relates to the field of hydrometeorology, in particular to a method for dispatching water resources based on land-atmosphere coupling in northern regions. Background technique [0002] Water resource scheduling is based on weather conditions, water and rain conditions, drought conditions, etc., on the premise of ensuring the safety of water conservancy projects in the system, and according to the operation plan of water conservancy projects, to meet the goal of water demand as much as possible. In northern China, the annual rainfall distribution is uneven, and more than 70% of the rainfall is concentrated in June, July, and August. The soil is short of water for a long time, and the effective runoff produced is small, and the amount of available surface water resources is also small. However, this has formed a strong contradiction with the demand for water resources in economic and social development, and it is facing a huge challenge to ...

AI Technical Summary

Problems solved by technology

In northern China, the annual rainfall distribution is uneven, and more than 70% of the rainfall is concentrated in June, July, and August. The soil is short of water for a long time, and the effective runoff produced is small, and the amount of available surface water resources is also small. However, this has formed a strong contradiction with the demand for water resources in economic and social development, and it is facing a huge challenge to promote the continuous development of water resource dispatching technology

[0003] At present, the commonly used water resource dispatching methods are to know the amount of water resources, and then dispatch the existing water resources. This makes the proposal of water resource dispatching schemes often lag behind the changes in water and rain conditions, which may cause a large amount of water to be abandoned in the reservoir, making the original As for relatively scarce water resources, there is no time to regulate and store them, so they flow downstream