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Hail detection algorithm on basis of meteorological radar data

A weather radar and data pairing technology, applied in the field of weather radar data analysis and processing, can solve problems such as inability to conduct research and analysis in a better depth, the source code is not open, and the intellectual property rights are not available, so as to reduce the loss of people's lives and property, Improve the early warning ability and ensure the effect of social and economic development

Inactive Publication Date: 2018-11-13
ANHUI NUOAN INFORMATION TECH CO LTD
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Problems solved by technology

However, for many years, my country only has the right to use the system, but does not have independent intellectual property rights. In addition, the source code of the system has not been opened, so many research and analysis cannot be carried out in depth. Therefore, in the theory of hail algorithm of the system It is necessary and urgent to develop a suitable hail algorithm based on

Method used

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  • Hail detection algorithm on basis of meteorological radar data
  • Hail detection algorithm on basis of meteorological radar data
  • Hail detection algorithm on basis of meteorological radar data

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Embodiment

[0042] Embodiment A kind of algorithm based on meteorological radar data to hail detection, based on storm localization and tracking algorithm (SCIT), obtain the information of the two-dimensional component of each storm cell according to SCIT algorithm, then use storm intensity, height and The relationship between the height of the 0°C layer-20°C layer, the probability of hail and the probability of strong hail, and the size of the hail were estimated, and the storm location information was obtained through the albedo information. The storm location includes the following steps:

[0043] (1) STORM CELL SEGMENTS algorithm (STORM CELL SEGMENTS)

[0044] The storm cell segment is an algorithm purely based on reflectivity factor data. It searches along a radial direction for reflectivity factor library sets that are continuously greater than a certain reflectivity factor threshold (denoted as REFLECTIVITY). The length of these library sets is greater than a certain A specified t...

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Abstract

The invention discloses a hail detection algorithm on the basis of meteorological radar data. The hail detection algorithm has the advantages that scientific guidance effects pertinently for timely hail weather warning and artificial influence and intervention can be realized for meteorological departments by a method for identifying and judging hail and the hail intensity by the aid of meteorological radar materials; hail detection algorithms are integrated and improved by the aid of American WSR-88D Doppler weather radar systems and current SWAN meteorological radar systems in China, research is carried out on thresholds of the VIL (vertically integrated liquid water contents) density of large hail occurrence cloud layers, accordingly, hail detection algorithm thresholds suitable for localization can be obtained, the hail weather warning time and accuracy can be improved, a scientific basis can be provided for disastrous weather short-time imminent forecasting by the meteorological departments, and influence can be possibly timely implemented on hail disastrous weather by artificial influence meteorological departments.

Description

technical field [0001] The invention relates to the technical field of weather radar data analysis and processing, in particular to an algorithm for hail detection based on weather radar data. Background technique [0002] Severe hail is a serious weather disaster. It often occurs in the process of strong convective weather. It is often accompanied by short-term thunderstorms and strong winds to cool down. It is very harmful to industrial and agricultural production and people's lives and property. According to statistics, the direct economic losses caused by hail all over my country will reach billions of yuan every year. [0003] Due to its high space-time density and perception ability, radar has become an important means for human beings to carry out meteorological monitoring and understand various weather phenomena. The present invention is a method of how to use various radar data to identify and calculate hail, which is of great significance for the meteorological de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/95G08B21/10G06Q10/04
CPCG01S13/958G06Q10/04G08B21/10Y02A90/10
Inventor 朱清平
Owner ANHUI NUOAN INFORMATION TECH CO LTD
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