Target region rainstorm thermodynamic cause analysis method and device

Abstract

The invention relates to a low-delay video call remote interaction method and device, and the method comprises the following steps: obtaining ERA5 reanalysis data of a target region, and rainfall real-time data during a rainstorm process; calculating an accumulated rainfall value during the rainstorm process based on the rainfall actual condition data, and drawing a rainfall spatial distribution diagram; selecting a section position for analysis near the rainstorm area, and determining the starting and ending latitudes and longitudes of the section; screening 925hPa u and v wind field and temperature data in the ERA5 data in the time periods before and after the rainstorm process through the selected profile position; drawing a 925hPa high-altitude wind field and temperature field superposition graph of the section position based on the u and v wind field and temperature data of 925hPa; the method can effectively analyze the thermal and dynamic condition development trend of the rainstorm process, and provides an effective basis for weather recovery of the rainstorm process.

Description

Technical Field

[0001] The present invention relates to the field of remote interaction related technologies, and in particular to a method and device for analyzing the thermal dynamic causes of rainstorms in a target area. Background Art

[0002] In the meteorological analysis, some areas are affected by monsoons, typhoons, small and medium-scale weather systems, and terrain undulations, resulting in uneven distribution of rainfall in time and space, complex rainstorm weather systems, and stronger water vapor, thermal, and dynamic conditions for rainstorms than in other coastal areas. Every year, rainstorms and other disastrous weather have caused huge losses to people's lives and property. The rainstorms in these areas include frontal rainstorms, typhoon rainstorms, and warm zone rainstorms. The occurrence and development mechanisms of different types of rainstorms are quite different. At present, when reviewing the rainstorm process, there is still a lack of mature methods to trace back and summarize the causes of rainstorms. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the deficiencies of the prior art and to provide a method and device for analyzing the thermal dynamic causes of rainstorms in a target area.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] Specifically, a method for analyzing the thermal dynamic causes of rainstorms in the target area is proposed, including the following:

[0006] Obtain ERA5 reanalysis data in the target area and actual rainfall data from weather stations during the rainstorm process;

[0007] Based on the actual rainfall data of the meteorological station, the cumulative rainfall value during the rainstorm process in the target area is calculated, and the spatial distribution map of rainfall is drawn;

[0008] Based on the rainfall spatial distribution map, the area where the cumulative rainfall exceeds the first threshold is defined as a rainstorm area, several sections for analysis are selected in the rainstorm area and line segments are drawn, and the longitude and latitude of the section in the ERA5 reanalysis data are determined according to the positions of the vertices at both ends of the line segment of the section, and then the starting and ending longitude and latitude of the section are determined;

[0009] Calculate the corresponding longitude and latitude of the line segments corresponding to the selected profiles in the ERA5 data, and select the u, v wind field and temperature data at 925hPa height of different profiles in the ERA5 data before and after the rainstorm process;

[0010] Based on the u, v wind field and temperature data of 925hPa, a superimposed diagram of the 925hPa high-altitude wind field and temperature field at the profile position is drawn;

[0011] Based on the superposition map of 925hPa high-altitude wind field and temperature field, the changes in high-altitude dynamic and thermal conditions in the target area before and after the heavy rain process are analyzed, and the analysis of the thermal dynamic causes of heavy rain in the target area is completed.

[0012] Further, specifically, the first threshold is 50 mm.

[0013] Furthermore, specifically, several profile locations for analysis are selected at intervals of 1° within the rainstorm area.

[0014] Furthermore, based on the 925hPa high-altitude wind field and temperature field overlay map, the changes in high-altitude dynamic and thermal conditions in the target area before and after the rainstorm process are analyzed, including:

[0015] If the wind direction in the profile is southwesterly and the wind speed increases with time and exceeds the second threshold, and the temperature difference between the fixed points at both ends of the line segment corresponding to the profile is within the third threshold, it indicates that the rainstorm is a warm-zone rainstorm dominated by southwesterly wind; if the wind direction is northerly or easterly and the wind component exceeds the second threshold and the temperature difference in the profile exceeds the fourth threshold, it indicates that the rainstorm is a stable frontal rainstorm formed with the participation of cold air.

[0016] Further, specifically, the second threshold is 8 m / s, the third threshold is 3° C., and the fourth threshold is 5° C.

[0017] The present invention also proposes a device for analyzing the thermal dynamic causes of rainstorm in a target area, comprising the following:

[0018] The data acquisition module is used to obtain the ERA5 reanalysis data of the target area and the actual rainfall data of the meteorological station during the rainstorm process;

[0019] The rainfall spatial distribution map making module is used to calculate the cumulative rainfall value during the rainstorm process in the target area based on the actual rainfall data of the meteorological station, and draw the rainfall spatial distribution map;

[0020] A first calculation module is used to define the area where the cumulative rainfall exceeds the first threshold as a rainstorm area based on the rainfall spatial distribution map, select a number of sections for analysis in the rainstorm area and draw line segments, determine the longitude and latitude of the section in the ERA5 reanalysis data according to the positions of the vertices at both ends of the line segment of the section, and then determine the starting and ending longitude and latitude of the section;

[0021] The second calculation module is used to calculate the corresponding longitude and latitude of the line segment corresponding to the selected profile in the ERA5 data, and to screen the u, v wind field and temperature data of different profiles at 925hPa height in the ERA5 data before and after the rainstorm process;

[0022] A 925hPa high-altitude wind field and temperature field overlay map making module is used to draw a 925hPa high-altitude wind field and temperature field overlay map at the profile position based on the u, v wind field and temperature data of 925hPa;

[0023] The rainstorm thermodynamic cause analysis module is used to analyze the changes in high-altitude dynamic and thermal conditions in the target area before and after the rainstorm process based on the 925hPa high-altitude wind field and temperature field overlay map, and complete the analysis of the thermodynamic causes of rainstorms in the target area.

[0024] Furthermore, based on the 925hPa high-altitude wind field and temperature field overlay map, the changes in high-altitude dynamic and thermal conditions in the target area before and after the rainstorm process are analyzed, including:

[0025] If the wind direction in the profile is southwesterly and the wind speed increases with time and exceeds the second threshold, and the temperature difference between the fixed points at both ends of the line segment corresponding to the profile is within the third threshold, it indicates that the rainstorm is a warm-zone rainstorm dominated by southwesterly wind; if the wind direction is northerly or easterly and the wind component exceeds the second threshold and the temperature difference in the profile exceeds the fourth threshold, it indicates that the rainstorm is a stable frontal rainstorm formed with the participation of cold air.

[0026] The beneficial effects of the present invention are:

[0027] The present invention proposes a method and device for analyzing the thermodynamic causes of rainstorms in a target area. Based on the ERA5 reanalysis data of the target area and the actual rainfall data during the rainstorm process, the rainstorm process analysis profile is selected and the starting and ending longitudes and latitudes of the profile are determined. The u and v wind fields and temperature data of 925hPa in the ERA5 data before and after the rainstorm process are screened through the selected profile position. The meteorological change characteristics of 925hPa are more obvious. Then, the 925hPa high-altitude wind field and temperature field superposition map of the selected profile position is drawn, and the changes in high-altitude dynamic and thermal conditions before and after the rainstorm process are analyzed based on this. The present invention can effectively analyze the development trend of the thermodynamic conditions of the rainstorm process and provide an effective basis for the weather review of the rainstorm process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other features of the present disclosure will become more apparent by describing in detail the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings of the present disclosure represent the same or similar elements. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure. For those skilled in the art, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0029] Figure 1 Shown is a flow chart of a method for analyzing the thermal dynamic causes of rainstorm in a target area according to the present invention;

[0030] Figure 2Shown is a schematic diagram of the analysis section of the present invention when it is applied;

[0031] Figure 3 The figure shows a schematic diagram of drawing a wind field-temperature field superposition diagram when the present invention is applied;

[0032] Figure 4 Shown is another schematic diagram of drawing a wind field-temperature field superposition diagram when the present invention is applied. DETAILED DESCRIPTION

[0033] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0034] Example 1, reference Figure 1 The present invention proposes a method for analyzing the thermal dynamic causes of rainstorm in a target area, including the following:

[0035] Step 110, obtaining ERA5 reanalysis data of the target area and actual rainfall data of the weather station during the rainstorm process;

[0036] Step 120: Calculate the cumulative rainfall value during the rainstorm process in the target area based on the actual rainfall data of the meteorological station, and draw a rainfall spatial distribution map;

[0037] Step 130: Based on the rainfall spatial distribution map, define the area where the cumulative rainfall exceeds the first threshold as a rainstorm area, select a number of sections for analysis in the rainstorm area and draw line segments, determine the longitude and latitude of the section in the ERA5 reanalysis data according to the positions of the vertices at both ends of the line segments of the section, and then determine the starting and ending longitude and latitude of the section;

[0038] Step 140, respectively calculate the corresponding longitude and latitude of the line segment corresponding to the selected profile in the ERA5 data, and select the u, v wind field and temperature data of different profiles at 925hPa height in the ERA5 data before and after the rainstorm process;

[0039] Step 150, drawing a 925hPa high-altitude wind field and temperature field overlay map at the profile position based on the u, v wind field and temperature data at 925hPa;

[0040] Step 160: Analyze the changes in high-altitude dynamic and thermal conditions in the target area before and after the rainstorm based on the 925 hPa high-altitude wind field and temperature field overlay map, and complete the analysis of the thermal dynamic causes of the rainstorm in the target area.

[0041] In this embodiment 1, based on the ERA5 reanalysis data of the target area and the actual rainfall data during the rainstorm process, the rainstorm process analysis profile is selected and the starting and ending longitudes and latitudes of the profile are determined. The u and v wind fields and temperature data of 925hPa in the ERA5 data before and after the rainstorm process are screened by the selected profile position. The meteorological change characteristics of 925hPa are more obvious. Then, the 925hPa high-altitude wind field and temperature field superposition map of the selected profile position is drawn, and the changes in high-altitude dynamic and thermal conditions before and after the rainstorm process are analyzed based on this. The present invention can effectively analyze the development trend of the thermal and dynamic conditions of the rainstorm process and provide an effective basis for the weather review of the rainstorm process.

[0042] As a preferred embodiment of the present invention, specifically, the first threshold is 50 mm.

[0043] In this preferred embodiment, considering that the daily cumulative precipitation exceeding 50 mm is considered to be heavy rain in meteorology, the first threshold is set to 50 mm, so that the heavy rain area in the target area can be accurately found.

[0044] As a preferred embodiment of the present invention, specifically, a number of profile positions for analysis are selected at intervals of 1° within the rainstorm area.

[0045] In this preferred embodiment, in order to ensure that the profile positions completely cover the rainstorm area and that adjacent profile positions are not too close, several profile positions for analysis are selected at intervals of 1° within the rainstorm area to ensure the accuracy of the subsequent analysis process.

[0046] As a preferred embodiment of the present invention, specifically, the changes in high-altitude dynamic and thermal conditions in the target area before and after the rainstorm process are analyzed based on the 925hPa high-altitude wind field and temperature field overlay map, including:

[0047] If the wind direction in the profile is southwesterly and the wind speed increases with time and exceeds the second threshold, and the temperature difference between the fixed points at both ends of the line segment corresponding to the profile is within the third threshold, it indicates that the rainstorm is a warm-zone rainstorm dominated by southwesterly wind; if the wind direction is northerly or easterly and the wind component exceeds the second threshold and the temperature difference in the profile exceeds the fourth threshold, it indicates that the rainstorm is a stable frontal rainstorm formed with the participation of cold air.

[0048] As a preferred implementation manner of the present invention, specifically, the second threshold is 8 m / s, the third threshold is 3°C, and the fourth threshold is 5°C.

[0049] In this preferred embodiment, in order to better indicate that the high altitude has good water vapor transport jet conditions, the second threshold is set to 8m / s; the third threshold is 3°C, which indicates that the temperature difference in the profile is small; the fourth threshold is 5°C, indicating that the temperature difference in the profile is large and there is an obvious cold air influence.

[0050] Specifically, when the present invention is applied, the specific cases are as follows:

[0051] A review and analysis of the heavy rainfall process in Guangdong from May 19 to 20, 2024 was conducted.

[0052] There are two rainstorm belts in the north and south during this precipitation process: northern Guangdong-northern Pearl River Delta and western Guangdong-coastal area of ​​Pearl River Estuary, among which the hourly rainfall intensity in Zhanjiang exceeds 100 mm.

[0053] Three analysis sections are divided for the two rainstorm belts, and their locations are as follows: Figure 2 The longitude and latitude of each section are as follows:

[0054] Line1:(113E,18N)-(108E,23N)

[0055] Line2:(114E,19N)-(109E,24N)

[0056] Line3:(115E,20N)-(110E,25N)

[0057] Line4:(116E,20N)-(116E,26N)

[0058] Line5:(115E,20N)-(115E,26N)

[0059] Line6:(114E,20N)-(114E,26N)

[0060] Line 1-3 mainly analyzes the temporal variation of wind speed of the southwest wind component of the 925hPa wind.

[0061] Line 4-6 mainly analyzes the temporal variation of wind speed of the easterly component of the 925hPa wind.

[0062] The u, v wind fields and temperature variables of the 925hPa isobaric surface layer of each section in the ERA5 data were screened, with a time range of 08:00 on May 19th to 08:00 on May 21st, and a time interval of 6 hours. The wind field-temperature field overlay diagram is drawn as follows Figure 3 , Figure 4 .in Figure 3 Southwest wind component and temperature overlays of line 1 (left), line 2 (middle) and line 3 (right) (coloring is temperature, contour lines are wind speed) Figure 4 East wind component and temperature superposition diagram of line4 (left), line5 (middle) and line6 (right) (color is temperature, contour lines are wind speed)

[0063] Analysis of the causes of the rainstorm belt along the coast of western Guangdong and the Pearl River Estuary: 08:00 on the 19th-08:00 on the 20th: The southwest wind at 925hPa in the area south of 22N on Line 1 was strong, which was conducive to the occurrence of heavy precipitation in the Leizhou Peninsula; from 02:00 on the 20th, the southwest wind on Line 1 increased and pushed northward, which prompted the maintenance of the southwest wind component south of 21N on Line 2 at 02:00 on the 20th, which was conducive to the occurrence of precipitation in Maoming and Yangjiang from 02:00 to 08:00. At the same time, on Line 3, the intensity of the southwest wind advancement weakened, so the water vapor and dynamic conditions of precipitation in the western Pearl River Delta weakened accordingly. 08:00 on the 20th-08:00 on the 21st: From 08:00 on the 20th, the southwest wind in the 18-21N area on Line 1-3 gradually strengthened to about 14m / s (after 14:00), which was conducive to the continuous transportation of water vapor in the Pearl River Delta. At the same time, the relatively strong southwest wind and easterly wind components converged here, forming favorable precipitation dynamic conditions in the Pearl River Delta during this period. During the entire analysis period, there was no significant change in the temperature in the 21-22N rainstorm belt area of ​​Line 4-6, indicating that there was no obvious cold air influence during the rainstorm.

[0064] Cause analysis of the rainstorm belt in northern Guangdong and the northern Pearl River Delta: 08:00 on the 19th-08:00 on the 20th: The easterly wind component in the area north of 22N is strong, but the easterly wind component weakened in the period from 02 to 08 on the 20th on Line6, and the large value area was broken, indicating that the easterly wind weakened after moving westward to the north of Guangzhou during this period (the southwesterly wind component advancing from the southwest direction also weakened in this area at this time), resulting in weak wind field convergence in the western Pearl River Delta, which in turn made the overall precipitation level in this area weak. 08:00 on the 20th-08:00 on the 21st: From 08:00, the easterly wind component north of 22N strengthened again, and the easterly wind from 08 to 20 on Line6 also strengthened significantly, indicating that the easterly wind was strong during this period and advanced to the Pearl River Delta and maintained, which was conducive to the continuous generation of precipitation in this area. During the entire analysis period, the temperature difference between the north and south of 23N of Line4-6 was obvious, indicating that there was a continuous influence of the eastern cold air (easterly wind).

[0065] In summary: the east wind has a strong wind speed center near 23N, and the southwest wind has a pulsating strengthening near 20-21N. The two strengthenings are basically synchronized, corresponding to the two rainstorm belts in the north and south. The rainstorm belt in the western Guangdong-Pearl River Estuary coastal area is a warm-zone rainstorm dominated by southwest winds, with obvious extremes; the rainstorm belt in the northern Guangdong-northern Pearl River Delta is a stable frontal rainstorm formed by the combined influence of southwest winds and cold air.

[0066] The present invention also proposes a device for analyzing the thermal dynamic causes of rainstorm in a target area, comprising the following:

[0067] The data acquisition module is used to obtain the ERA5 reanalysis data of the target area and the actual rainfall data of the meteorological station during the rainstorm process;

[0068] The rainfall spatial distribution map making module is used to calculate the cumulative rainfall value during the rainstorm process in the target area based on the actual rainfall data of the meteorological station, and draw the rainfall spatial distribution map;

[0069] A first calculation module is used to define the area where the cumulative rainfall exceeds the first threshold as a rainstorm area based on the rainfall spatial distribution map, select a number of sections for analysis in the rainstorm area and draw line segments, determine the longitude and latitude of the section in the ERA5 reanalysis data according to the positions of the vertices at both ends of the line segment of the section, and then determine the starting and ending longitude and latitude of the section;

[0070] The second calculation module is used to calculate the corresponding longitude and latitude of the line segment corresponding to the selected profile in the ERA5 data, and to screen the u, v wind field and temperature data of different profiles at 925hPa height in the ERA5 data before and after the rainstorm process;

[0071] A 925hPa high-altitude wind field and temperature field overlay map making module is used to draw a 925hPa high-altitude wind field and temperature field overlay map at the profile position based on the u, v wind field and temperature data of 925hPa;

[0072] The rainstorm thermodynamic cause analysis module is used to analyze the changes in high-altitude dynamic and thermal conditions in the target area before and after the rainstorm process based on the 925hPa high-altitude wind field and temperature field overlay map, and complete the analysis of the thermodynamic causes of rainstorms in the target area.

[0073] As a preferred embodiment of the present invention, specifically, the changes in high-altitude dynamic and thermal conditions in the target area before and after the rainstorm process are analyzed based on the 925hPa high-altitude wind field and temperature field overlay map, including:

[0074] If the wind direction in the profile is southwesterly and the wind speed increases with time and exceeds the second threshold, and the temperature difference between the fixed points at both ends of the line segment corresponding to the profile is within the third threshold, it indicates that the rainstorm is a warm-zone rainstorm dominated by southwesterly wind; if the wind direction is northerly or easterly and the wind component exceeds the second threshold and the temperature difference in the profile exceeds the fourth threshold, it indicates that the rainstorm is a stable frontal rainstorm formed with the participation of cold air.

[0075] In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of software functional modules.

[0076] If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or system that can carry the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0077] Although the description of the present invention has been quite detailed and specifically describes several described embodiments, it is not intended to be limited to any of these details or embodiments or any particular embodiment, but should be regarded as providing a broad possible interpretation of these claims in view of the prior art by reference to the appended claims, thereby effectively covering the intended scope of the present invention. In addition, the above description of the present invention is based on the embodiments foreseeable by the inventor, and its purpose is to provide a useful description, and those non-substantial changes to the present invention that have not yet been foreseen may still represent equivalent changes to the present invention.

[0078] The above is only a preferred embodiment of the present invention. The present invention is not limited to the above implementation. As long as the technical effect of the present invention is achieved by the same means, it should belong to the protection scope of the present invention. Within the protection scope of the present invention, its technical scheme and / or implementation method can have various modifications and changes.

Claims

1. A method for analyzing the thermal dynamic causes of rainstorm in a target area, characterized in that: Includes the following: Obtain ERA5 reanalysis data in the target area and actual rainfall data from weather stations during the rainstorm process; Based on the actual rainfall data of the meteorological station, the cumulative rainfall value during the rainstorm process in the target area is calculated, and the spatial distribution map of rainfall is drawn; Based on the rainfall spatial distribution map, the area where the cumulative rainfall exceeds the first threshold is defined as a rainstorm area, several sections for analysis are selected in the rainstorm area and line segments are drawn, and the longitude and latitude of the section in the ERA5 reanalysis data are determined according to the positions of the vertices at both ends of the line segment of the section, and then the starting and ending longitude and latitude of the section are determined; Calculate the corresponding longitude and latitude of the line segments corresponding to the selected profiles in the ERA5 data, and select the u, v wind field and temperature data at 925hPa height of different profiles in the ERA5 data before and after the rainstorm process; Based on the u, v wind field and temperature data of 925hPa, a superimposed diagram of the 925hPa high-altitude wind field and temperature field at the profile position is drawn; Based on the superposition map of 925hPa high-altitude wind field and temperature field, the changes in high-altitude dynamic and thermal conditions in the target area before and after the heavy rain process are analyzed, and the analysis of the thermal dynamic causes of heavy rain in the target area is completed.

2. A method for analyzing the thermal dynamic causes of rainstorm in a target area according to claim 1, characterized in that: Specifically, the first threshold is 50 mm.

3. The method for analyzing the thermal dynamic causes of rainstorm in a target area according to claim 1, characterized in that: Specifically, several profile locations for analysis were selected at intervals of 1° within the rainstorm area.

4. The method for analyzing the thermal dynamic causes of rainstorm in a target area according to claim 1, characterized in that: Specifically, based on the 925hPa high-altitude wind field and temperature field overlay map, the changes in high-altitude dynamic and thermal conditions in the target area before and after the rainstorm process were analyzed, including: If the wind direction in the profile is southwesterly and the wind speed increases with time and exceeds the second threshold, and the temperature difference between the fixed points at both ends of the line segment corresponding to the profile is within the third threshold, it indicates that the rainstorm is a warm-zone rainstorm dominated by southwesterly wind; if the wind direction is northerly or easterly and the wind component exceeds the second threshold and the temperature difference in the profile exceeds the fourth threshold, it indicates that the rainstorm is a stable frontal rainstorm formed with the participation of cold air.

5. A method for analyzing the thermal dynamic causes of rainstorm in a target area according to claim 4, characterized in that: Specifically, the second threshold is 8 m / s, the third threshold is 3° C., and the fourth threshold is 5° C.

6. A device for analyzing the thermal dynamic causes of rainstorm in a target area, characterized in that: Includes the following: The data acquisition module is used to obtain the ERA5 reanalysis data of the target area and the actual rainfall data of the meteorological station during the rainstorm process; The rainfall spatial distribution map making module is used to calculate the cumulative rainfall value during the rainstorm process in the target area based on the actual rainfall data of the meteorological station, and draw the rainfall spatial distribution map; A first calculation module is used to define the area where the cumulative rainfall exceeds the first threshold as a rainstorm area based on the rainfall spatial distribution map, select a number of sections for analysis in the rainstorm area and draw line segments, determine the longitude and latitude of the section in the ERA5 reanalysis data according to the positions of the vertices at both ends of the line segment of the section, and then determine the starting and ending longitude and latitude of the section; The second calculation module is used to calculate the corresponding longitude and latitude of the line segment corresponding to the selected profile in the ERA5 data, and to screen the u, v wind field and temperature data of different profiles at 925hPa height in the ERA5 data before and after the rainstorm process; A 925hPa high-altitude wind field and temperature field overlay map making module is used to draw a 925hPa high-altitude wind field and temperature field overlay map at the profile position based on the u, v wind field and temperature data of 925hPa; The rainstorm thermodynamic cause analysis module is used to analyze the changes in high-altitude dynamic and thermal conditions in the target area before and after the rainstorm process based on the 925hPa high-altitude wind field and temperature field overlay map, and complete the analysis of the thermodynamic causes of rainstorms in the target area.

7. The device for analyzing the thermal dynamic causes of rainstorm in a target area according to claim 6, characterized in that: Specifically, based on the 925hPa high-altitude wind field and temperature field overlay map, the changes in high-altitude dynamic and thermal conditions in the target area before and after the rainstorm process were analyzed, including: If the wind direction in the profile is southwesterly and the wind speed increases with time and exceeds the second threshold, and the temperature difference between the fixed points at both ends of the line segment corresponding to the profile is within the third threshold, it indicates that the rainstorm is a warm-zone rainstorm dominated by southwesterly wind; if the wind direction is northerly or easterly and the wind component exceeds the second threshold and the temperature difference in the profile exceeds the fourth threshold, it indicates that the rainstorm is a stable frontal rainstorm formed with the participation of cold air.

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