Method for manufacturing tropical cyclone wind zone

A tropical cyclone and wind belt technology, which is applied in the evaluation of the overall intensity of tropical cyclones and the assessment of the impact range, can solve the problem that tropical cyclone images do not have time continuity, cannot obtain continuous tropical cyclone wind belts, and cannot obtain historical tropical cyclone wind fields. data, etc.

Inactive Publication Date: 2011-01-05
BEIJING NORMAL UNIVERSITY
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two problems in radar wind measurement: on the one hand, due to the limitation of radar application time, it is impossible to obtain sufficient time-length historical tropical cyclone wind field data; It is continuous in time, so this method can only analyze several individual images of tropical cyclones in some offshore or land areas, but cannot obtain the continuous wind belt of the entire tropical cyclone
Although this method can be used for wind field analysis based on numerical simulation or raster data obtained from near real-time wind field analysis systems, it cannot use the temporally discontinuous wind contours and other data in tropical cyclone events to produce tropical cyclone events. cyclonic wind belt

Method used

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  • Method for manufacturing tropical cyclone wind zone
  • Method for manufacturing tropical cyclone wind zone
  • Method for manufacturing tropical cyclone wind zone

Examples

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Effect test

Embodiment 1

[0056] The method for making the tropical cyclone wind belt according to the present invention will be described in detail below by taking the gale area evolution map of No. 33 tropical cyclone event in 1949 shown in my country's "Tropical Cyclone Yearbook" as an example.

[0057] Step 1: Obtain the central waypoint and wind circle attribute data of the tropical cyclone event.

[0058] A tropical cyclone event recorded in the gale area evolution map of my country's "Tropical Cyclone Yearbook" includes a linear path connected by multiple tropical cyclone central path points with a time interval of usually 6 hours and a number of unequal time intervals. The annular graphics of the wind area of ​​a certain wind level are commonly described, wherein each annular graphic is the boundary of a wind circle.

[0059] First, scan and correct the paper-based map of the evolution of the windy region to obtain the pictures stored in the computer, such as figure 2 shown.

[0060] Secondly...

Embodiment 2

[0124] In the following, we will use the gale area evolution map of No. 17 Tropical Cyclone Event in 1949 shown in my country's "Tropical Cyclone Yearbook", as shown in Figure 11 As shown, the method for making a tropical cyclone wind belt according to the present invention is described as an example.

[0125] Figure 12 The digitized wind circle of the gale area evolution map of the tropical cyclone event is shown, and Table 2 shows the wind circle and the attribute table of each path point obtained from the digitized gale area evolution map of the tropical cyclone event.

[0126] Table 2A Attributes of Tropical Cyclone No. 17 in 1949

[0127]

[0128] Table 2B Attributes of the track of Tropical Cyclone No. 17 in 1949

[0129]

[0130] As described in the embodiment, ellipse fitting is carried out to the wind circles of level 6 wind force and the wind circle of level 8 wind force respectively, and the interpolation ellipse is obtained by interpolating the fitted ell...

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Abstract

The invention provides a method for manufacturing a tropical cyclone wind zone, which comprises the following steps of: acquiring time and wind scale of a plurality of known wind rounds in a tropical cyclone event and data of wind round boundary geographic coordinates, and performing ellipse fitting on the boundary of each wind round to form a fit ellipse wind round; interpolating the fit ellipse wind round of the same wind scale to obtain a plurality of time-intensive-related interpolated wind rounds according to the determined time interval, and making the plurality of fit ellipse wind rounds and a plurality of interpolated wind rounds at the same wind scale form an envelope, wherein a zone surrounded by the obtained envelope line is a wind zone subjected to the wind scale, and forming the tropical cyclone wind zone of the tropical cyclone event by superposing the wind zone at each wind scale.

Description

technical field [0001] The invention relates to the evaluation of the overall intensity of the tropical cyclone and the evaluation of the range of influence. More specifically, it relates to a method for making a tropical cyclone belt. Background technique [0002] According to the definition in the "National Standard for Tropical Cyclone Grades (GB / T 19201-2006)" issued by my country, a tropical cyclone refers to a non-frontal vortex that is formed on the tropical or subtropical ocean surface and has organized convection and definite cyclonic circulation. A collective term for cyclones, including tropical depressions, tropical storms, severe tropical storms, typhoons, strong typhoons and super typhoons. The national standard also defines the wind level as a level determined according to the degree of influence of the wind on ground or sea objects, and is used to estimate the size of the wind speed. Among the various levels of tropical cyclones according to the national sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G15/00
Inventor 方伟华李颖
Owner BEIJING NORMAL UNIVERSITY
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