Convective weather approach prediction method and system

A nowcasting and weather technology, applied in the radio wave measurement system, climate sustainability, radio wave reflection/reradiation, etc., can solve the problems of reduced quality of motion vector field, increased tracking failure, etc.

Active Publication Date: 2015-10-14
深圳市气象台
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Problems solved by technology

[0005] Embodiments of the present invention provide a method and system for nowcasting convective weather, aiming to solve the problem that the quality of the motion v

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  • Convective weather approach prediction method and system
  • Convective weather approach prediction method and system

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Embodiment Construction

[0024] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0025] In the embodiment of the present invention, the optical flow field of the radar echo is calculated by using the locally constrained optical flow method (Optical Flow), which is used to replace the motion vector field in the cross-correlation method for the approaching of convective weather Forecasting, so that the recognition, tracking and motion estimation of radar echoes can be completed ...

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Abstract

The invention belongs to the weather prediction and forecast technical field and relates to a convective weather approach prediction method and system. The method includes the following steps that: a radar mosaic in a detection area is acquired; a locally-constrained optical flow method is adopted to perform calculation based on the radar mosaic, so that the optical flow field of radar echoes can be obtained; radar echo extrapolation is performed according to the optical flow field of the radar echoes, so that approach prediction of convective weather can be completed. According to the convective weather approach prediction method and system of the invention, the locally-constrained optical flow method is adopted to perform calculation, so that the optical flow field of the radar echoes can be obtained, and therefore, a motion vector field in a cross-correlation method can be replaced, and thus, tracking and motion estimation of the radar echoes can be completed accurately, and the prediction performance of convective weather approach prediction can be improved.

Description

technical field [0001] The invention belongs to the technical field of weather forecasting, and in particular relates to a nowcasting method and system for convective weather. Background technique [0002] Severe weather forecasting is an important part of the development of the forecasting system, especially for coastal, highly developed and densely populated areas, which are often affected by weather systems such as frontal low troughs, tropical cyclones, and monsoon clouds. Disastrous weather such as thunderstorms, thunderstorms, strong winds, hail, and typhoons often occurs, and it is a disastrous weather-prone area. According to the statistics of authoritative departments, among all kinds of natural disasters that affect cities, more than 80% of the disaster losses are caused by meteorological disasters, and the economic losses caused by meteorological disasters account for about 1% to 3% of the total GDP. Based on the above reasons, meteorological disaster prevention ...

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Application Information

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IPC IPC(8): G01S13/95
CPCG01S13/951Y02A90/10
Inventor 曹春燕陈元昭张文海陈训来徐文文李程刘东华
Owner 深圳市气象台
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