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Typhoon center positioning method based on wind stress disturbance

A center positioning, wind stress technology, used in measurement devices, meteorology, scientific instruments, etc.

Active Publication Date: 2020-06-12
南京海气智绘信息技术有限公司
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  • Abstract
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Problems solved by technology

[0009] As mentioned above, the current methods for locating the typhoon center have their own limitations. Therefore, it is necessary to develop a method for responding to remote sensing images associated with sea surface wind field disturbances. The present invention proposes a sea surface typhoon based on wind stress disturbance theory. Central positioning method to meet the needs of satellite monitoring of sea typhoons

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  • Typhoon center positioning method based on wind stress disturbance
  • Typhoon center positioning method based on wind stress disturbance
  • Typhoon center positioning method based on wind stress disturbance

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Embodiment Construction

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0037] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0038] Typhoon center positioning method provided by the present invention, its method flow diagram is as follows figure 1 shown, including the following steps:

[0039] Step 1. Select the remote sensing image band, the far infrared band is used to observe the cloud and surface temperature, and select the 8-14um far infrared band remote sensing image as the typhoon center positioning input data;

[0040] Step ...

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Abstract

The invention discloses a typhoon center positioning method based on wind stress disturbance, and relates to the technical field of ocean remote sensing. The method comprises the following steps: selecting a remote sensing image waveband as typhoon center positioning input data; selecting and generating sea-land mask data with corresponding resolution; calculating gradients of the infrared image along the longitude direction and the latitude direction respectively; calculating a sea surface wind field disturbance factor; taking the maximum disturbance factor position of the sea surface wind field as a circle center, taking a set threshold value as a radius, and determining the minimum disturbance factor position in the range as the typhoon center position. Aiming at the problem of sea surface typhoon center positioning, the invention provides a sea surface typhoon center positioning method based on a wind stress disturbance theory, and the position of a typhoon center can be determinedby utilizing a far infrared remote sensing image and combining with the approximate position of a forecast typhoon.

Description

technical field [0001] The invention discloses a typhoon center positioning method based on wind stress disturbance, which belongs to a sea surface typhoon center positioning method and relates to the technical field of marine remote sensing. Background technique [0002] Automatically locating the typhoon center is one of the key technologies for early warning and forecasting of typhoon disasters. At present, there are relatively mature methods for automatic positioning of the typhoon center at home and abroad, and the accuracy still needs to be improved. Typhoons with eyes usually appear in the mature stage of typhoons, and typhoons without eyes are typhoons in the formation stage and weak typhoons. The positioning technology of these typhoons has always been a difficult point in the typhoon analysis and forecasting business. [0003] At home and abroad, many explorations have been made in the automatic positioning of typhoons, mainly including: [0004] (1) Manual posit...

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Application Information

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IPC IPC(8): G01W1/10
CPCG01W1/10
Inventor 谢涛
Owner 南京海气智绘信息技术有限公司
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