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A short-term heavy rainfall forecast method and system

A technology for forecasting systems and heavy rainfall, applied in the field of meteorological services, can solve problems such as increased tracking failures and reduced quality of motion vector fields, and achieve the effect of improving performance

Inactive Publication Date: 2021-11-09
深圳市雅码科技有限公司
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Problems solved by technology

[0007] However, in daily business use, it is found that the quality of the motion vector field given by the cross-correlation method is reduced, and the number of tracking failures will increase significantly when the precipitation echo is generated in the local area and its intensity and shape change rapidly with time.

Method used

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  • A short-term heavy rainfall forecast method and system
  • A short-term heavy rainfall forecast method and system
  • A short-term heavy rainfall forecast method and system

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Embodiment Construction

[0038] In order to make the objectives, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0039] see figure 1 , is a flow chart of the short-term heavy rainfall forecasting method according to the embodiment of the present application. The short-term heavy rainfall forecasting method of the embodiment of the present application includes the following steps:

[0040] Step 100: Read radar base data, and perform radar echo quality control processing on the radar base data;

[0041] In step 100, the radar echo quality control process specifically includes weighted Gaussian filtering, morphological analysis expansion algorithm, morphological analysis erosion algorithm, ...

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Abstract

This application relates to a short-term heavy rainfall forecast method and system. The method includes: step a: reading radar basic data, and performing radar echo quality control processing on the radar basic data; step b: constructing a Fleet constraint based on the radar basic data after the radar echo quality control processing A forecasting system based on the optical flow method; Step c: construct an identification and tracking system based on the Fleet constrained optical flow method according to the forecast system based on the Fleet constrained optical flow method, and perform data analysis and generate and output products of the Fleet optical flow method. This application builds a brand-new forecasting system based on the Fleet constrained optical flow method to solve the problem of echo extrapolation forecasting for local generation and rapid changes in the intensity and shape of rainfall clouds over time, and to improve the accuracy of short-term heavy rainfall weather. Nowcasting System Performance.

Description

technical field [0001] The present application belongs to the technical field of meteorological services, and in particular relates to a short-term heavy rainfall forecasting method and system. Background technique [0002] Short-term heavy rainfall is a type of strong convective weather, which refers to the rainfall of more than 30 mm in a certain place within 3 hours. Short-term heavy rainfall has the characteristics of strong suddenness, strong onset, and concentrated precipitation time. Due to the high intensity and concentrated time of precipitation, short-term heavy rainfall often causes meteorological-derived disasters such as urban waterlogging and landslides, which seriously affects urban operation. even life-threatening. Short-term heavy rainfall often comes and goes in a hurry, and the forecast effect of conventional meteorological forecasting methods is poor. It is very difficult to carry out weather forecast 24 hours in advance. At the same time, due to current...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01W1/10G01S7/41
CPCG01S7/41G01W1/10Y02A90/10
Inventor 张文海张海强陈林锋
Owner 深圳市雅码科技有限公司
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