Method of Improving the Accuracy of Thunderstorm Weather Warning and Forecast Based on Dual-polarization Radar Observation

A dual-polarization and accuracy technology, which is applied in the field of improving the accuracy of thunderstorm weather warning and forecasting based on dual-polarization radar observations, can solve the lack of quantitative research, the lack of a single thunderstorm filtering method, and the lack of a single thunderstorm microphysics conceptual model, etc. question
CN107843884BActive Publication Date: 2021-09-14CHENGDU UNIV OF INFORMATION TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHENGDU UNIV OF INFORMATION TECH
Publication Date
2021-09-14

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Abstract

The invention belongs to the field of radar weather observation, and discloses a method for improving the accuracy of thunderstorm weather warning and forecast based on dual-polarization radar observation, using X-band dual-polarization weather radar parameters, and performing phase unfolding, filtering and attenuation correction on data On the basis of quality control, based on the fuzzy logic algorithm, the ambient temperature limit of sounding data is introduced to identify various water particles in thunderstorm cells; The evolution characteristics of the horizontal and vertical distribution of the formed particles are analyzed in detail; finally, the microphysical concept model of the evolution process of the thunderstorm cell is established based on this, and the structure and evolution characteristics of the thunderstorm cell are obtained. The invention helps to deepen the understanding of the particle distribution and microphysical process of the hydrometeor inside a typical thunderstorm cell, and can provide quantitative and direct technical support for early warning and forecasting of thunderstorm weather.
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Description

technical field

[0001] The invention belongs to the field of radar weather observation, and in particular relates to a method for improving the accuracy of thunderstorm early warning and forecast based on dual-polarization radar observation. Background technique

[0002] Thunderstorms are often caused by local convective systems such as single thunderstorms, multi-cell storms and super thunderstorms, often accompanied by lightning, short-term heavy precipitation, hail and strong winds, which bring a lot of inconvenience to human production and life. It also often causes great losses to the economic development of the society. Among them, the thunderstorm cell is the basis of thunderstorm weather. For example, a multi-cell storm is a strong thunderstorm system composed of thunderstorm cells in different development stages arranged in a row, and the circulation system is consistent. The dual linear polarization weather radar can alternately (or simultaneously) transmit and re...

Claims

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