CN112748480A - Offshore tropical cyclone center positioning method and device, equipment and storage medium - Google Patents
Offshore tropical cyclone center positioning method and device, equipment and storage medium Download PDFInfo
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- CN112748480A CN112748480A CN202011519832.6A CN202011519832A CN112748480A CN 112748480 A CN112748480 A CN 112748480A CN 202011519832 A CN202011519832 A CN 202011519832A CN 112748480 A CN112748480 A CN 112748480A
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- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/95—Lidar systems specially adapted for specific applications for meteorological use
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The application relates to an offshore tropical cyclone center positioning method and device, equipment and a storage medium, wherein the method comprises the following steps: controlling a laser wind measuring radar to monitor the marine weather; acquiring marine meteorological data detected by a laser wind measuring radar during a typhoon crossing period; based on marine meteorological data, the current marine tropical cyclone center is positioned by combining a tropical cyclone center flow field and physical change characteristics. The laser wind measuring radar is used for monitoring the marine weather in real time, the marine weather data monitored by the laser wind measuring radar during the typhoon crossing is combined with the central flow field and physical change characteristics of the tropical cyclone, and the current marine tropical cyclone center is positioned.
Description
Technical Field
The application relates to the technical field of meteorological monitoring, in particular to a method, a device, equipment and a storage medium for positioning the center of an offshore tropical cyclone.
Background
Tropical cyclone is one of the main natural disasters affecting China, and the tropical cyclone is usually represented as a vortex cloud system on a satellite cloud picture and comprises three parts, namely a typhoon eye, a cloud wall and a spiral cloud zone. Currently, offshore tropical cyclone center positioning is mainly based on satellite cloud images, and the Dvorak Technique (DT) proposed in the seventies of the twentieth century is a common method for tropical cyclone analysis in the world, and on the basis of the conventional method, an ADT Technique (Advanced Dvorak Technique) wind field analysis method is gradually developed. Most of the methods are based on cyclone center positioning realized on the basis of computer image resolution processing. As is known, the resolution of satellite data is generally low, errors can exist between data positioned by a computer and the visual observation of the forecaster's own experience, particularly when tropical cyclones are located in the offshore area, the typhoon eye asymmetry can be enhanced due to the influence of the topographic actions of the sea island and the land below, so that the structure of the typhoon eye becomes complex, and the satellite has a high resolution and is not easy to accurately determine the center position of vortex circulation, so that the finally identified center deviation of the tropical cyclones in the offshore area is large.
Disclosure of Invention
In view of this, the present application provides an offshore tropical cyclone center positioning method, which can effectively reduce the deviation of the offshore tropical cyclone center positioning and improve the accuracy of the offshore tropical cyclone center positioning.
According to an aspect of the application, there is provided an offshore tropical cyclone centring method comprising:
controlling a laser wind measuring radar to monitor the marine weather;
acquiring marine meteorological data detected by the laser wind measuring radar during the typhoon crossing period;
and based on the marine meteorological data, positioning the current marine tropical cyclone center by combining the tropical cyclone center flow field and the physical change characteristics.
In one possible implementation, the lidar is a floating lidar.
In one possible implementation, the marine meteorological data includes at least one of horizontal wind field data, vertical airflow, barometric pressure, and humidity during the typhoon crossing.
In one possible implementation, the typhoon crossing period is determined based on a preset distance from a coastline during a typhoon landing period.
In a possible implementation manner, the value range of the preset data is: 30 km-50 km.
In one possible implementation, acquiring marine meteorological data detected by the laser wind-measuring radar during a typhoon transit comprises:
and extracting the marine meteorological data when the typhoon landing period is away from a coastline by a preset distance from the coastline from the data monitored by the laser wind measuring radar.
In one possible implementation manner, the method further includes:
and determining the maximum wind speed and the maximum wind speed radius range of the typhoon according to the physical characteristics of the typhoon wind eye structure and the ideal blue-gold vortex characteristics based on the marine meteorological data.
According to an aspect of the application, there is also provided an offshore tropical cyclone centring device comprising a data acquisition module and a centring module;
the data acquisition module is configured to acquire marine meteorological data detected by the laser wind-measuring radar during typhoon transit;
the center positioning module is configured to position the current offshore tropical cyclone center based on the offshore meteorological data in combination with the tropical cyclone center flow field and the physical variation characteristics.
There is also provided according to an aspect of the present application, an offshore tropical cyclone centring device comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to execute the executable instructions to implement any of the methods described above.
According to an aspect of the application, there is also provided a non-transitory computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of any of the preceding.
The method comprises the steps of monitoring the marine weather in real time by the laser wind measuring radar, positioning the current marine tropical cyclone center based on marine weather data monitored by the laser wind measuring radar during the typhoon crossing, combining a tropical cyclone center flow field and physical change characteristics, and positioning the current marine tropical cyclone center.
Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.
Figure 1 shows a flow diagram of an offshore tropical cyclone centering method according to an embodiment of the present application;
figure 2 shows a block diagram of the structure of an offshore tropical cyclone centering device according to an embodiment of the present application;
figure 3 shows a block diagram of the structure of an offshore tropical cyclone centering device according to an embodiment of the present application.
Detailed Description
Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.
Figure 1 shows a flow diagram of an offshore tropical cyclone centering method according to an embodiment of the present application. As shown in fig. 1, the method includes: and S100, controlling the laser wind measuring radar to monitor the marine weather. Here, it should be noted that the lidar can monitor the weather at sea in real time to obtain the current weather information at sea in real time. Meanwhile, it should be noted that the laser wind-finding radar can be installed beside the coast, and the weather information on the sea monitored in real time is weather information on the offshore area.
In the process of controlling the laser wind-measuring radar to monitor the marine weather in real time through the step S100, the step S200 is also executed at the same time, and marine weather data detected by the laser wind-measuring radar during the typhoon crossing period is obtained. Further, the current offshore tropical cyclone center is located based on the offshore meteorological data in combination with the tropical cyclone center flow field and the physical variation characteristics, via step S300.
Therefore, according to the offshore tropical cyclone center positioning method, the marine weather is monitored in real time through the laser wind measuring radar, the current marine tropical cyclone center is positioned based on marine weather data monitored by the laser wind measuring radar during a typhoon crossing period and by combining a tropical cyclone center flow field and physical change characteristics, and due to the fact that the data detected by the laser wind measuring radar has very high timeliness, when the tropical cyclone center is positioned based on the marine weather data detected by the laser wind measuring radar, the finally obtained positioning result can better accord with the current actual weather condition, and the finally obtained positioning result is more accurate.
In one possible implementation manner, the laser wind-measuring radar may be implemented by a floating laser wind-measuring radar. That is, the floating type laser wind finding radar is fixedly installed at the offshore area adjacent to the coast through a fixing device, so that the floating type laser wind finding radar can more rapidly detect corresponding weather information during the typhoon crossing. Compared with a conventional radar for tropical cyclone center positioning, the method has the advantages that the method effectively improves the rapid acquisition of the change of the marine meteorological information during the typhoon crossing period, and meanwhile, compared with the conventional radar, the low-altitude area corresponding to the acquired marine meteorological data is closer to the typhoon crossing area, so that the acquired data are more accurate.
Here, it should be noted that the floating lidar may be fixed in any manner in the offshore region, and the details are not repeated herein.
In addition, in the method of the embodiment of the present application, the marine meteorological data detected by the lidar includes, but is not limited to, horizontal wind field data, vertical airflow, air pressure, humidity and other information during the typhoon crossing. That is, the marine meteorological data detected by the laser wind finding radar includes at least one of horizontal wind field data, vertical airflow, air pressure, and humidity during typhoon crossing. Wherein, the horizontal wind field data is second-level horizontal wind speed data.
Meanwhile, it should be noted that, in the method of the embodiment of the present application, the positioning of the tropical cyclone center is mainly performed according to the marine meteorological data during the typhoon crossing. And the marine meteorological information detected by the laser wind-measuring radar is monitored in real time. Therefore, in the method of the embodiment of the present application, when obtaining the meteorology data detected by the lidar during the typhoon crossing, the meteorology data monitored by the lidar needs to extract the required data in a centralized manner.
In a possible implementation manner, when the marine meteorological data monitored by the laser wind measuring radar is collectively extracted during the typhoon crossing period, the extraction can be performed based on the distance from the typhoon landing period to the coastline.
That is, the typhoon crossing period may be determined based on a preset distance from the coastline during the typhoon landing period. Correspondingly, when the marine meteorological data during the typhoon crossing are extracted, the marine meteorological data during the typhoon landing period and the preset distance from the coastline can be directly extracted from the data monitored by the laser wind-measuring radar.
Here, it should be noted that the value of the preset distance can be flexibly set according to the actual situation. In the method of the embodiment of the present application, the preset distance may take a value of 30km to 50 km.
After marine meteorological data during the typhoon crossing period is extracted from the laser wind measuring radar, the current marine tropical cyclone center can be positioned based on the extracted marine meteorological data and by combining the tropical cyclone center flow field and the physical change characteristics.
It is understood by those skilled in the art that the tropical cyclone central flow field and the physical change feature are well known in the art, and will not be described in detail herein. Meanwhile, based on the extracted marine meteorological data, the specific method for positioning the center of the current marine tropical cyclone by combining the central flow field and the physical change characteristics of the tropical cyclone can also adopt a method for positioning the center of the offshore tropical cyclone by using a weather radar in the field, and further description is omitted here.
Further, in the method of the embodiment of the present application, the method further includes a step S400 of determining a maximum wind speed and a maximum wind speed radius range of the typhoon according to the physical characteristics of the typhoon wind eye structure and the ideal blue-gold vortex characteristics based on the marine meteorological data. Namely, when the tropical cyclone center is positioned, the typhoon wind speed and the maximum wind speed radius range can be determined according to the physical characteristics of the typhoon wind eye structure and the ideal blue-gold vortex characteristics based on the extracted marine meteorological data, so that more accurate and effective data guarantee is provided for typhoon path and intensity monitoring and forecasting.
Similarly, the physical features of the typhoon eye structure and the ideal blue gold vortex feature are also common knowledge in the art and are not specifically exemplified here. And, based on the extracted marine meteorological data, the specific manner of determining the typhoon wind speed and the maximum wind speed radius range according to the physical characteristics of the typhoon wind eye structure and the ideal blue-gold vortex characteristics can also be realized by adopting the conventional technical means in the field, and the details are not repeated herein.
Therefore, the offshore tropical cyclone center positioning method in the embodiment of the application carries out real-time monitoring on marine meteorological changes by adopting the laser wind measuring radar, and carries out positioning of the tropical cyclone center, determination of the typhoon wind speed and determination of the maximum wind speed radius range of the typhoon based on marine meteorological data in the typhoon passing period detected by the laser wind measuring radar. Compared with the prior art that the satellite cloud picture and the weather radar are adopted for central positioning, the method of the embodiment of the application has the advantages that the timeliness of the data collected by the laser wind-measuring radar is extremely high, and the height and more layers of the data can be measured, wherein the height is higher than that of the offshore wind-measuring tower. Meanwhile, in the process of carrying out center positioning, the finally positioned tropical cyclone center and the maximum wind speed radius are enabled to better accord with physical laws and objective facts through auxiliary judgment of vertical airflow, and the method has a more remarkable effect on perfecting real-time positioning of the tropical cyclone center in the offshore area and improving the medium-short term wind power prediction effect.
Correspondingly, based on any one of the above-mentioned offshore tropical cyclone centering methods, the application also provides an offshore tropical cyclone centering device. Since the working principle of the offshore tropical cyclone centering device provided by the application is the same as or similar to that of the offshore tropical cyclone centering method provided by the application, repeated description is omitted.
Referring to fig. 2, the present application provides an offshore tropical cyclone centering device 100 that includes a data acquisition module 110 and a centering module 120. The data acquisition module 110 is configured to acquire marine meteorological data detected by the lidar during the typhoon crossing. A center location module 120 configured to locate a current offshore tropical cyclone center based on the offshore meteorological data in combination with the tropical cyclone center flow field and the physical variation characteristics.
Still further, in accordance with another aspect of the present application, there is also provided an offshore tropical cyclone centering apparatus 200. Referring to fig. 3, the offshore tropical cyclone centering device 200 of an embodiment of the present application includes a processor 210 and a memory 220 for storing instructions executable by the processor 210. Wherein the processor 210 is configured to execute the executable instructions to implement any of the offshore tropical cyclone centering methods described above.
Here, it should be noted that the number of the processors 210 may be one or more. Meanwhile, in the offshore tropical cyclone centering device 200 according to the embodiment of the present application, an input device 230 and an output device 240 may be further included. The processor 210, the memory 220, the input device 230, and the output device 240 may be connected via a bus, or may be connected via other methods, which is not limited in detail herein.
The memory 220, which is a computer-readable storage medium, may be used to store software programs, computer-executable programs, and various modules, such as: the application relates to a program or a module corresponding to the offshore tropical cyclone center positioning method. The processor 210 executes various functional applications and data processing of the offshore tropical cyclone centering device 200 by executing software programs or modules stored in the memory 220.
The input device 230 may be used to receive an input number or signal. Wherein the signal may be a key signal generated in connection with user settings and function control of the device/terminal/server. The output device 240 may include a display device such as a display screen.
According to another aspect of the application, there is also provided a non-transitory computer readable storage medium having stored thereon computer program instructions which, when executed by the processor 210, implement the offshore tropical cyclone centering method as described in any one of the preceding.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. An offshore tropical cyclone centering method, comprising:
controlling a laser wind measuring radar to monitor the marine weather;
acquiring marine meteorological data detected by the laser wind measuring radar during the typhoon crossing period;
and based on the marine meteorological data, positioning the current marine tropical cyclone center by combining the tropical cyclone center flow field and the physical change characteristics.
2. The method of claim 1, wherein the lidar is a floating lidar.
3. The method of claim 1, wherein the off-shore meteorological data comprises at least one of horizontal wind field data, vertical airflow, barometric pressure, and humidity during the typhoon crossing.
4. The method of claim 1, wherein the typhoon crossing period is determined based on a preset distance of a typhoon landing period from a coastline.
5. The method of claim 4, wherein the preset data has a value range of: 30 km-50 km.
6. The method of claim 4, wherein acquiring marine meteorological data detected by the lidar during a typhoon crossing comprises:
and extracting the marine meteorological data when the typhoon landing period is away from a coastline by a preset distance from the coastline from the data monitored by the laser wind measuring radar.
7. The method of claim 1, further comprising:
and determining the maximum wind speed and the maximum wind speed radius range of the typhoon according to the physical characteristics of the typhoon wind eye structure and the ideal blue-gold vortex characteristics based on the marine meteorological data.
8. An offshore tropical cyclone centering device is characterized by comprising a data acquisition module and a centering module;
the data acquisition module is configured to acquire marine meteorological data detected by the laser wind-measuring radar during typhoon transit;
the center positioning module is configured to position the current offshore tropical cyclone center based on the offshore meteorological data in combination with the tropical cyclone center flow field and the physical variation characteristics.
9. An offshore tropical cyclone centring device comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to carry out the executable instructions when implementing the method of any one of claims 1 to 7.
10. A non-transitory computer readable storage medium having computer program instructions stored thereon, wherein the computer program instructions, when executed by a processor, implement the method of any of claims 1 to 7.
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Cited By (1)
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| CN113658258A (en) * | 2021-08-19 | 2021-11-16 | 象辑知源（武汉）科技有限公司 | Typhoon positioning method, device, system, electronic equipment and storage medium |
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Inventor after: Du Weian Inventor after: Yu Zhibin Inventor after: Li Xiaoya Inventor after: Leng Peng Inventor after: Yang Xiaodong Inventor after: Gao Feng Inventor after: Li Yangchun Inventor after: Pi Fuqiang Inventor after: Zhao Zhiyuan Inventor after: Song Jun Inventor after: Wang Yanzhe Inventor before: Du Weian Inventor before: Leng Peng Inventor before: Yang Xiaodong Inventor before: Gao Feng Inventor before: Li Yangchun Inventor before: Pi Fuqiang Inventor before: Zhao Zhiyuan Inventor before: Song Jun Inventor before: Wang Yanzhe |