An Instantaneous Gale Early Warning Method with Automatic Correction

An automatic correction and strong wind technology, applied in weather forecasting, meteorology, climate sustainability, etc., can solve problems such as the difficulty of small-scale instantaneous strong wind forecasting

Active Publication Date: 2020-03-31
GUANGZHOU JIYUYUN INFORMATION TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Local instantaneous gale is generally caused by local strong convective weather, and it is related to topography, height, etc. It is very difficult for the current weather forecasting technology to forecast such local small-scale instantaneous gale

Method used

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  • An Instantaneous Gale Early Warning Method with Automatic Correction

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0021] figure 1 Schematic flow chart of the instantaneous gale warning method for automatic correction, including steps:

[0022] S1, obtain the change trend value of the vertical liquid water content VIL of the target cloud;

[0023] The change trend value of vertical liquid water content VIL is the average value of the last three vertical liquid water content VIL change trend values.

[0024] Specifically, the VIL value of Doppler radar is related to the radar echo intensity, radar echo height, and cloud bottom area. Each radar has its own VIL calculation formula, u...

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Abstract

The invention relates to an automatically corrected instant gale early warning method, which includes steps of acquiring movement direction and movement speed of a target cloud cluster when the targetcloud cluster is existed with a zone of which radar echo intensity value is more than or equal to 55dBZ, and the zone area is more than or equal to the preset area; acquiring modification value W ofmovement direction of the target cloud cluster, modification value K of landform, and wind speed experience value U0 of instant gale generated at 55dBZ; acquiring instant gale forecasted wind speed value S of a monitored point according to the maximum values P, W, K, U0 of the current echo intensity; sending the instant gale warning when the instant gale forecasting wind speed rate S is more thanthe early warning wind speed doorsill value, calculating time T0 of the target cloud cluster arrived at the monitoring point according to the distance between the target cloud cluster and the monitored point and the movement speed of the target cloud cluster; sending alarms at different grades to the monitored point according to the change of time T0.

Description

technical field [0001] The invention relates to the technical field of meteorological early warning, in particular to an automatic correcting instantaneous gale early warning method. Background technique [0002] Severe convective weather refers to disastrous weather that occurs suddenly, moves rapidly, is violent, and is extremely destructive in meteorology. It mainly includes thunderstorms, strong winds, hail, tornadoes, and local heavy rainfall. [0003] Sudden instantaneous strong convective winds often cause major disasters, especially in spring and summer. There are 100 major accidents of casualties caused by instantaneous strong winds in my country every year. For example, in 2016, a sudden strong wind in Machong, Dongguan caused a major safety accident where a tower crane collapsed at a construction site and 18 people died. [0004] Local instantaneous gale is generally caused by local strong convective weather, and it is related to topography, height, etc. It is ve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01W1/10
CPCG01W1/10Y02A90/10
Inventor 孙海元
Owner GUANGZHOU JIYUYUN INFORMATION TECH CO LTD
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