A pollution source tracing system and method based on meteorological data simulation

Abstract

The present invention discloses a pollution source tracing system and method based on meteorological data simulation, which relates to the technical field of atmospheric pollution tracing. The air pollution emission position in a target park is marked, and the atmospheric pollution propagation model of the target park is obtained according to the emission record of the air pollution, the meteorological record of the target park and the air pollution emission record. The pollution superposition simulation is performed on any position in the target park through the atmospheric pollution propagation model to obtain the superposition pollution source model of the arbitrary position. When an air pollution alarm prompt is received at a certain position in the target park, the historical position and intensity of the polluted air mass are calculated according to the atmospheric pollution propagation tracing model to form an atmospheric pollution propagation path, and the emission position of the atmospheric pollution is traced cyclically. When the tracing conditions of the atmospheric pollution propagation tracing model are not met, the atmospheric pollution is traced according to the superposition pollution source obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of atmospheric pollution source tracing, and in particular to a pollution source tracing system and method based on meteorological data simulation. Background Art

[0002] With the development of industrialization and industrial parks, the industries in and around industrial parks are highly concentrated, the industry and the city are deeply integrated, and the environmental quality demands are constantly increasing. When air pollution occurs, it is necessary to find the pollution source in a timely manner. With the development of computing technology, the diffusion of pollutants in the atmosphere is simulated by collecting meteorological data and pollution emission data. The pollutant diffusion model in the traditional solution is a large-scale pollutant diffusion model. Due to the huge amount of model data, the response time of the model is slow in the process of tracing the source of pollution through the large-scale pollution diffusion model, and the pollution source information cannot be fed back in time. This causes management delays, making it impossible to curb air pollution in a timely manner. Summary of the invention

[0003] The purpose of the present invention is to provide a pollution source tracing method based on meteorological data simulation to solve the problems raised in the prior art.

[0004] To achieve the above object, the present invention provides the following technical solution: a pollution source tracing method based on meteorological data simulation, the solution comprising the following steps:

[0005] Step S100: a certain industrial park is set as a target park, map information and meteorological data of the target park are collected, air pollution emission locations in the target park are marked, and emission patterns of various air pollution emission locations are obtained according to air pollution emission records;

[0006] Step S200: obtaining an air pollution simulation model, and obtaining an air pollution propagation model of the target park according to the meteorological records and air pollution emission records of the target park;

[0007] Step S300: Perform pollution superposition simulation at any location in the target park through the atmospheric pollution propagation model to obtain a superposition pollution source model at any location;

[0008] Step S400: Obtain an air pollution propagation tracing model. When an air pollution alarm is received at a certain location in the target park, the historical location and intensity of the polluted air mass are calculated according to the air pollution propagation tracing model to form an air pollution propagation path and circulate the air pollution emission location;

[0009] Step S500: When the atmospheric pollution propagation tracing model cannot calculate the previous position of the polluted air mass, and there is no air pollution emission location on the currently calculated atmospheric pollution propagation path, the list of superimposed pollution sources corresponding to the last tracing result is searched, and the atmospheric pollution is traced based on the superimposed pollution sources obtained.

[0010] Furthermore, step S100 includes:

[0011] Step S101: marking each air pollution emission location in the map information, and collecting the air pollution emission history records of each air pollution emission location;

[0012] Step S102: Obtain all air pollution emission records of a certain air pollution emission location PE, obtain the pollution index of each emission record, and perform pattern recognition on the pollution emission index of all air pollution emission records of PE through a pattern recognition algorithm to obtain an air pollution emission pattern set of the air pollution emission location PE, recorded as r PE , pollution indicators shall at least include: pollution type and pollution concentration;

[0013] Step S103: Establishing the pollution source determination relationship of the air pollution emission position PE, wherein when the pollution index of the air at PE is equal to r PE When the pollution indexes in the middle are the same, PE is judged as the pollution emission source;

[0014] By performing pattern recognition on air pollution emission locations, the pollution emission characteristics of different air pollution emission locations are extracted to form the judgment conditions for pollution emissions. When the air pollution at an air pollution emission location is the same as the corresponding pollution emission characteristics, it is judged to meet the pollution emissions of the corresponding air pollution emission location.

[0015] Furthermore, step S300 includes:

[0016] Step S301: Obtain a certain position D0 of the target park, set the pollution target p0 at D0 when the meteorological condition is M0, add a simulated polluted air mass to the atmospheric pollution simulation model, and mark the position of the simulated polluted air mass, so that after a simulation time of length T0, the air pollution index in D0 is the same as that in p0;

[0017] Step S302: Gather all simulated air masses, obtain the position and pollution index of each simulated polluted air mass, and combine the position and pollution index of any simulated air mass into a simulated superposition pair, where the i-th simulated air mass AM i s The corresponding simulated superposition pair is (e i , p i ), e i represents the position of the ith simulated air mass, pi represents the pollution index of the ith simulated air mass;

[0018] Step S303: Gather all simulated superposition pairs to form a simulated superposition pollution source model OL0 when the meteorological condition at D0 is M0 and the pollution index is p0.

[0019] Furthermore, the step of obtaining the atmospheric pollution propagation source tracing model in step S400 includes:

[0020] Step S401: Based on the Lagrangian particle release model, combined with the deadline data generated by the meteorological research and forecast modeling system, the diffusion of polluted air masses in the target park is analyzed;

[0021] Step S402: Collect historical observation records of air pollution, generate meteorological field parameters in the CALPUFF model through the CALMET program module, and perform diffusion tracing analysis on atmospheric pollutant gases through the CALPUFF model.

[0022] Furthermore, the tracing step in step S400 includes:

[0023] Step S403: When receiving the D c When the air pollution alarm at the location is prompted, obtain D c The pollution index of the air at the location, the time when the alarm is received is recorded as t c ;

[0024] Step S404: D c The position is taken as the first node on the atmospheric pollution transmission path, and t c The T0 time period before the moment is taken as the first tracing time period, and the meteorological records in the first tracing time period are obtained;

[0025] Step S405: Calculate the starting time of the first tracing time period, the location D2 of the polluted air mass and the pollution index g2 according to the atmospheric pollution propagation tracing model, take D2 as the second node on the atmospheric pollution propagation path, obtain the air pollution emission location at D2 according to the map information, and when g2 satisfies the pollution source determination relationship of the air pollution emission location at D2, the pollution source is the pollution source on the atmospheric pollution propagation path;

[0026] Step S406: When there is no air pollution emission location at D2, or g2 does not satisfy the pollution source determination relationship of the air pollution emission location at D2, the second node pollution index g2 and the meteorological data of the T0 time period before the start time of the first tracing time period are brought into the atmospheric pollution propagation tracing model, and step S405 is repeated to obtain the pollution source on the atmospheric pollution propagation path;

[0027] In a small-scale meteorological model, the meteorological environment of two points that are close to each other is similar in a unit of time. Therefore, in a small-scale pollution source tracing model, more accurate results can be obtained by tracing the pollution source forward one unit of time each time.

[0028] After each tracing node is passed, feedback is given, and when the matching conditions are met, the alarm result is output to minimize the scope of tracing as much as possible, save computer computing resources and increase the tracing response time.

[0029] Furthermore, step S500 includes:

[0030] Step S501: Obtain the pollution index g at the xth node on the atmospheric pollution propagation path x and the position D of the xth node x , when D x There are no air pollution emission locations, or g x Not satisfied with D x The pollution source determination relationship of the air pollution emission location at the location is repeated. After step S405, if the information of the x+1th node cannot be obtained, D is obtained. x at t c The weather conditions M in the xth time period T0 after c x ;

[0031] Step S502: According to the meteorological conditions M c x and pollution index g x , get D x A simulation superposition model at the location, obtaining all simulation superposition pairs in the simulation superposition model;

[0032] Step S503: The positions and pollution indicators of the simulated air masses in all simulated superposition pairs are respectively brought into the atmospheric pollution propagation source tracing model to obtain the position information and pollution indicators of the next node respectively, and the pollution source determination relationship in step S405 is repeated to obtain the pollution sources on the atmospheric pollution propagation path.

[0033] In order to better implement the above method, a pollution source tracing system based on meteorological data simulation is also proposed, the system includes: a pollution emission management module, an atmospheric pollution propagation model management module, a pollution superposition management module, a first propagation path management module and a second propagation path management module, wherein the pollution emission management module is used to manage the pollution emission records in the target park, the atmospheric pollution propagation model management module is used to manage the atmospheric pollution propagation management model, the pollution superposition management module is used to perform superposition simulation on the air pollution in the target park, the first propagation path management module is used to trace the linear path of the polluted air mass, and the second propagation path management module is used to trace the branch path of the polluted air mass;

[0034] Furthermore, the pollution emission management module includes: a map information management unit, an emission record management unit and a determination management unit, wherein the map information management unit is used to manage the map information in the target park, the emission record management unit performs pattern recognition on the pollution emission index of the air pollution emission location through a pattern recognition algorithm, and the determination management unit is used to manage the pollution emission judgment conditions of the air pollution emission location;

[0035] Furthermore, the pollution overlay management module includes: a data simulation unit, a simulation overlay pair management unit and a simulation overlay model management unit, wherein the data simulation unit is used to obtain air pollution simulation data in the target park, the simulation overlay pair management unit is used to collect the simulation data to obtain simulation overlay pairs, and the simulation overlay model management unit is used to manage the simulation overlay pollution source model;

[0036] Further, the first propagation path management module includes: a source tracing model management unit, a node data management unit, a cycle management unit and a pollution source judgment unit, wherein the source tracing model management unit is used to manage the atmospheric pollution source tracing model, the node data management unit is used to manage the pollution index of the node position in the atmospheric pollution propagation path, the cycle management unit is used to obtain meteorological data and pollution index, and trace the source to the previous node through the atmospheric pollution source tracing model, and the pollution source judgment unit is used to judge the location of the pollution source;

[0037] Furthermore, the second propagation path management module includes: a tracing interruption unit, a simulation overlay model acquisition unit and a branch management unit, wherein the tracing interruption unit is used to interrupt the linear tracing path, the simulation overlay model acquisition unit is used to obtain the simulation overlay model at the interruption position of the linear tracing path, and the branch management unit is used to bring the position and pollution index of the simulated air mass in the simulation overlay pair of each branch into the atmospheric pollution propagation tracing model, and obtain the tracing information of the next node respectively.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention collects historical data and establishes a small-scale air pollution source tracing system through a data model. In small-scale scenarios such as industrial parks, a precise source tracing method is formed. Chain tracing and branch tracing are combined to decompose the problem of branch tracing into the superposition of multiple chain tracing problems, which simplifies the part of implementing calculations in the tracing calculation and reduces the time of tracing response. When an air pollution incident occurs in the park, timely feedback is provided to the source of air pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of a pollution source tracing system based on meteorological data simulation of the present invention;

[0040] Figure 2A schematic diagram of a pollution source tracing method based on meteorological data simulation according to the present invention;

[0041] Figure 3 A schematic diagram of a pollution source tracing process of a pollution source tracing method based on meteorological data simulation according to the present invention; DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example: Figure 1 , Figure 2 and Figure 3 As shown, the present invention provides a technical solution:

[0044] Step S100: a certain industrial park is set as a target park, map information and meteorological data of the target park are collected, air pollution emission locations in the target park are marked, and emission patterns of various air pollution emission locations are obtained according to air pollution emission records;

[0045] Wherein, step S100 includes:

[0046] Step S101: marking each air pollution emission location in the map information, and collecting the air pollution emission history records of each air pollution emission location;

[0047] Step S102: Obtain all air pollution emission records of a certain air pollution emission location PE, obtain the pollution index of each emission record, and perform pattern recognition on the pollution emission index of all air pollution emission records of PE through a pattern recognition algorithm to obtain an air pollution emission pattern set of the air pollution emission location PE, recorded as r PE , pollution indicators shall at least include: pollution type and pollution concentration;

[0048] The pattern recognition algorithms used include: clustering algorithm, neighboring value algorithm and support vector machine algorithm. By sorting the pollution indicators in the pollution emission records and extracting signs, the pollution emission characteristics of different air pollution emission locations are obtained, for example, the pollution type and pollution concentration of air pollution emitted at a certain pollution emission location.

[0049] Step S103: Establishing the pollution source determination relationship of the air pollution emission position PE, wherein when the pollution index of the air at PE is equal to r PE When the pollution indicators in the two tests are the same, PE is judged to be the pollution emission source.

[0050] Step S200: Acquire an air pollution simulation model, and acquire an air pollution propagation model of the target park based on the meteorological records and air pollution emission records of the target park.

[0051] Step S300: Perform pollution superposition simulation at any location in the target park through the atmospheric pollution propagation model to obtain a superposition pollution source model at any location;

[0052] Wherein, step S300 includes:

[0053] Step S301: Obtain a certain position D0 of the target park, set the pollution target p0 at D0 when the meteorological condition is M0, add a simulated polluted air mass to the atmospheric pollution simulation model, and mark the position of the simulated polluted air mass, so that after a simulation time of length T0, the air pollution index in D0 is the same as that in p0;

[0054] Step S302: Gather all simulated air masses, obtain the position and pollution index of each simulated polluted air mass, and combine the position and pollution index of any simulated air mass into a simulated superposition pair, where the i-th simulated air mass AM i s The corresponding simulated superposition pair is (e i , p i ), e i represents the position of the ith simulated air mass, p i represents the pollution index of the ith simulated air mass;

[0055] Step S303: Gather all simulated superposition pairs to form a simulated superposition pollution source model OL0 when the meteorological condition at D0 is M0 and the pollution index is p0.

[0056] Step S400: Obtain an air pollution propagation tracing model. When an air pollution alarm is received at a certain location in the target park, the historical location and intensity of the polluted air mass are calculated according to the air pollution propagation tracing model to form an air pollution propagation path and circulate the air pollution emission location;

[0057] Wherein, step S400 includes:

[0058] Step S401: Based on the Lagrangian particle release model, combined with the deadline data generated by the meteorological research and forecast modeling system, the diffusion of polluted air masses in the target park is analyzed;

[0059] LPDM (Lagrangian Partition Distribution Model) is a Lagrangian particle release model that calculates the motion trajectory of air mass groups to simulate the transport and diffusion of atmospheric substances. The Lagrangian air mass model describes the transport and diffusion of air by calculating a large number of air mass trajectories. The so-called air mass here is not a real air mass, but an infinitesimal air mass. As a new generation of Lagrangian model tools, it can be used to simulate the long-term and mesoscale transport, diffusion, dry and wet deposition and radiation attenuation of atmospheric tracer substances emitted by point sources, line sources, surface sources and three-dimensional atmospheric sources. Its forward trajectory simulation in time can be used to simulate the trajectory-diffusion process of the emission source, and the backward simulation can determine the impact area of ​​the emission source;

[0060] Step S402: Collect historical observation records of air pollution, generate meteorological field parameters in the CALPUFF model through the CALMET program module, and perform diffusion tracing analysis on atmospheric pollutant gases through the CALPUFF model;

[0061] The present invention adopts the CALPUFF model, which is a model recommended by the atmospheric environmental impact assessment guidelines, to conduct diffusion tracing analysis of atmospheric pollutant gases; CALPUFF is a puff diffusion model system that can simulate the transport, transformation and removal process of pollutants when the three-dimensional flow field changes with time and space;

[0062] Step S403: When receiving the D c When the air pollution alarm at the location is prompted, obtain D c The pollution index of the air at the location, the time when the alarm is received is recorded as t c ;

[0063] Step S404: D c The position is taken as the first node on the atmospheric pollution transmission path, and t c The T0 time period before the moment is taken as the first tracing time period, and the meteorological records in the first tracing time period are obtained;

[0064] Step S405: Calculate the starting time of the first tracing time period, the location D2 of the polluted air mass and the pollution index g2 according to the atmospheric pollution propagation tracing model, take D2 as the second node on the atmospheric pollution propagation path, obtain the air pollution emission location at D2 according to the map information, and when g2 satisfies the pollution source determination relationship of the air pollution emission location at D2, the pollution source is the pollution source on the atmospheric pollution propagation path;

[0065] Step S406: When there is no air pollution emission location at D2, or g2 does not satisfy the pollution source determination relationship of the air pollution emission location at D2, the second node pollution index g2 and the meteorological data of the T0 time period before the starting time of the first tracing time period are brought into the atmospheric pollution propagation tracing model, and step S405 is repeated to obtain the pollution sources on the atmospheric pollution propagation path.

[0066] Step S500: When the atmospheric pollution propagation tracing model cannot calculate the previous position of the polluted air mass, and there is no air pollution emission position on the currently calculated atmospheric pollution propagation path, the list of superimposed pollution sources corresponding to the last tracing result is searched, and the atmospheric pollution is traced according to the superimposed pollution sources obtained;

[0067] Wherein, step S500 includes:

[0068] Step S501: Obtain the pollution index g at the xth node on the atmospheric pollution propagation path x and the position D of the xth node x , when D x There are no air pollution emission locations, or g x Not satisfied with D x The pollution source determination relationship of the air pollution emission location at the location is repeated. After step S405, if the information of the x+1th node cannot be obtained, D is obtained. x at t c The weather conditions M in the xth time period T0 after c x ;

[0069] Step S502: According to the meteorological conditions M c x and pollution index g x , get D x A simulation superposition model at the location, obtaining all simulation superposition pairs in the simulation superposition model;

[0070] Step S503: The positions and pollution indicators of the simulated air masses in all simulated superposition pairs are respectively brought into the atmospheric pollution propagation source tracing model to obtain the position information and pollution indicators of the next node respectively, and the pollution source determination relationship in step S405 is repeated to obtain the pollution sources on the atmospheric pollution propagation path;

[0071] When a complaint is received at any location in the park, the reverse trajectory model can be triggered manually or automatically to generate a potential transmission path for the pollution source. By comparing the pollution source list and identifying the possible pollution sources on the reverse trajectory, the scope of pollution source investigation is greatly narrowed, saving manual investigation time and cost.

[0072] The system includes:

[0073] A pollution emission management module, an atmospheric pollution propagation model management module, a pollution superposition management module, a first propagation path management module, and a second propagation path management module;

[0074] The pollution emission management module is used to manage the pollution emission records in the target park, wherein the pollution emission management module includes: a map information management unit, an emission record management unit and a determination management unit, wherein the map information management unit is used to manage the map information in the target park, the emission record management unit performs pattern recognition on the pollution emission index of the air pollution emission location through a pattern recognition algorithm, and the determination management unit is used to manage the pollution emission judgment conditions of the air pollution emission location;

[0075] Among them, the air pollution propagation model management module is used to manage the air pollution propagation management model;

[0076] The pollution overlay management module is used to perform overlay simulation on the air pollution in the target park, wherein the pollution overlay management module includes: a data simulation unit, a simulation overlay pair management unit and a simulation overlay model management unit, wherein the data simulation unit is used to obtain air pollution simulation data in the target park, the simulation overlay pair management unit is used to collect simulation data to obtain simulation overlay pairs, and the simulation overlay model management unit is used to manage simulation overlay pollution source models;

[0077] The first propagation path management module is used to trace the linear path of the polluted air mass, wherein the first propagation path management module includes: a tracing model management unit, a node data management unit, a cycle management unit and a pollution source judgment unit, wherein the tracing model management unit is used to manage the atmospheric pollution tracing model, the node data management unit is used to manage the pollution index of the node position in the atmospheric pollution propagation path, the cycle management unit is used to obtain meteorological data and pollution index, and trace the source to the previous node through the atmospheric pollution tracing model, and the pollution source judgment unit is used to judge the location of the pollution source;

[0078] Among them, the second propagation path management module is used to trace the branch path of the polluted air mass, wherein the second propagation path management module includes: a tracing interruption unit, a simulation overlay model acquisition unit and a branch management unit, wherein the tracing interruption unit is used to interrupt the linear tracing path, the simulation overlay model acquisition unit is used to obtain the simulation overlay model at the interruption position of the linear tracing path, and the branch management unit is used to bring the position and pollution index of the simulated air mass in the simulation overlay pair of each branch into the atmospheric pollution propagation tracing model, and obtain the tracing information of the next node respectively.

[0079] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A pollution source tracing method based on meteorological data simulation, characterized by: Step S100: a certain industrial park is set as a target park, map information and meteorological data of the target park are collected, air pollution emission locations in the target park are marked, and emission patterns of various air pollution emission locations are obtained according to air pollution emission records; Step S200: obtaining an air pollution simulation model, and obtaining an air pollution propagation model of the target park according to the meteorological records and air pollution emission records of the target park; Step S300: Perform pollution superposition simulation at any location in the target park through the atmospheric pollution propagation model to obtain a superposition pollution source model at any location; Step S300 includes: Step S301: Obtain a certain position D0 of the target park, set the pollution target p0 at D0 when the meteorological condition is M0, add a simulated polluted air mass to the atmospheric pollution simulation model, and mark the position of the simulated polluted air mass, so that after a simulation time of length T0, the air pollution index in D0 is the same as that in p0; Step S302: Gather all simulated air masses, obtain the position and pollution index of each simulated polluted air mass, and combine the position and pollution index of any simulated air mass into a simulated superposition pair, where the i-th simulated air mass AM i s The corresponding simulated superposition pair is (e i , p i ), e i represents the position of the ith simulated air mass, p i represents the pollution index of the ith simulated air mass; Step S303: Collect all simulated superposition pairs to form a simulated superposition pollution source model OL0 when the meteorological condition at D0 is M0 and the pollution index is p0; Step S400: Obtain an air pollution propagation tracing model. When an air pollution alarm is received at a certain location in the target park, the historical location and intensity of the polluted air mass are calculated according to the air pollution propagation tracing model to form an air pollution propagation path and circulate the air pollution emission location; Step S400 includes: Step S401: Based on the Lagrangian particle release model, combined with the deadline data generated by the meteorological research and forecast modeling system, the diffusion of polluted air masses in the target park is analyzed; Step S402: Collect historical observation records of air pollution, generate meteorological field parameters in the CALPUFF model through the CALMET program module, and perform diffusion tracing analysis on atmospheric pollutant gases through the CALPUFF model; Step S403: When receiving the D c When the air pollution alarm at the location is prompted, obtain D c The pollution index of the air at the location, the time when the alarm is received is recorded as t c ; Step S404: D c The position is taken as the first node on the atmospheric pollution transmission path, and t c The T0 time period before the moment is taken as the first tracing time period, and the meteorological records in the first tracing time period are obtained; Step S405: Calculate the starting time of the first tracing time period, the location D2 of the polluted air mass and the pollution index g2 according to the atmospheric pollution propagation tracing model, take D2 as the second node on the atmospheric pollution propagation path, obtain the air pollution emission location at D2 according to the map information, and when g2 satisfies the pollution source determination relationship of the air pollution emission location at D2, the pollution source is the pollution source on the atmospheric pollution propagation path; Step S406: When there is no air pollution emission location at D2, or g2 does not satisfy the pollution source determination relationship of the air pollution emission location at D2, the second node pollution index g2 and the meteorological data of the T0 time period before the start time of the first tracing time period are brought into the atmospheric pollution propagation tracing model, and step S405 is repeated to obtain the pollution source on the atmospheric pollution propagation path; Step S500: When the atmospheric pollution propagation tracing model cannot calculate the previous position of the polluted air mass, and there is no air pollution emission location on the currently calculated atmospheric pollution propagation path, the list of superimposed pollution sources corresponding to the last tracing result is searched, and the atmospheric pollution is traced based on the superimposed pollution sources obtained.

2. The pollution source tracing method based on meteorological data simulation according to claim 1 is characterized by: Step S100 includes: Step S101: marking each air pollution emission location in the map information, and collecting the air pollution emission history records of each air pollution emission location; Step S102: Obtain all air pollution emission records of a certain air pollution emission location PE, obtain the pollution index of each emission record, perform pattern recognition on the pollution emission index of all air pollution emission records of PE through a pattern recognition algorithm, and obtain the air pollution emission pattern set of the air pollution emission location PE, recorded as r PE , the pollution index at least includes: pollution type and pollution concentration; Step S103: Establishing the pollution source determination relationship of the air pollution emission position PE, wherein when the pollution index of the air at PE is equal to r PE When the pollution indicators in the two tests are the same, PE is judged to be the pollution emission source.

3. The pollution source tracing method based on meteorological data simulation according to claim 2 is characterized in that: Step S500 includes: Step S501: Obtain the pollution index g at the xth node on the atmospheric pollution propagation path x and the position D of the xth node x , when D x There are no air pollution emission locations, or g x Not satisfied with D x The pollution source determination relationship of the air pollution emission location at the location is repeated. After step S405, if the information of the x+1th node cannot be obtained, D is obtained. x at t c The weather conditions M in the xth time period T0 after c x ; Step S502: According to the meteorological conditions M c x and pollution index g x , get D x A simulation superposition model at the location, obtaining all simulation superposition pairs in the simulation superposition model; Step S503: The positions and pollution indicators of the simulated air masses in all simulated superposition pairs are respectively brought into the atmospheric pollution propagation source tracing model to obtain the position information and pollution indicators of the next node respectively, and the pollution source determination relationship in step S405 is repeated to obtain the pollution sources on the atmospheric pollution propagation path.

4. A pollution source tracing system based on meteorological data simulation, used to execute a pollution source tracing method based on meteorological data simulation according to any one of claims 1 to 3, characterized in that: The system includes: Pollution emission management module, atmospheric pollution propagation model management module, pollution overlay management module, first propagation path management module and second propagation path management module, wherein the pollution emission management module is used to manage pollution emission records in the target park, the atmospheric pollution propagation model management module is used to manage the atmospheric pollution propagation management model, the pollution overlay management module is used to perform overlay simulation on air pollution in the target park, the first propagation path management module is used to trace the linear path of the polluted air mass, and the second propagation path management module is used to trace the branch path of the polluted air mass.

5. A pollution source tracing system based on meteorological data simulation according to claim 4, characterized in that: The pollution emission management module includes: a map information management unit, an emission record management unit and a determination management unit, wherein the map information management unit is used to manage the map information in the target park, the emission record management unit performs pattern recognition on the pollution emission index of the air pollution emission location through a pattern recognition algorithm, and the determination management unit is used to manage the pollution emission judgment conditions of the air pollution emission location; The pollution overlay management module includes: a data simulation unit, a simulation overlay pair management unit and a simulation overlay model management unit, wherein the data simulation unit is used to obtain air pollution simulation data in the target park, the simulation overlay pair management unit is used to aggregate the simulation data to obtain simulation overlay pairs, and the simulation overlay model management unit is used to manage the simulation overlay pollution source model.

6. The pollution source tracing system based on meteorological data simulation according to claim 4 is characterized by: The first propagation path management module includes: a tracing model management unit, a node data management unit, a cycle management unit and a pollution source judgment unit, wherein the tracing model management unit is used to manage the atmospheric pollution tracing model, the node data management unit is used to manage the pollution indicators of the node positions in the atmospheric pollution propagation path, the cycle management unit is used to obtain meteorological data and pollution indicators, and trace the source to the previous node through the atmospheric pollution tracing model, and the pollution source judgment unit is used to judge the location of the pollution source.

7. The pollution source tracing system based on meteorological data simulation according to claim 4 is characterized by: The second propagation path management module includes: a tracing interruption unit, a simulation overlay model acquisition unit and a branch management unit, wherein the tracing interruption unit is used to interrupt the linear tracing path, the simulation overlay model acquisition unit is used to obtain the simulation overlay model at the interruption position of the linear tracing path, and the branch management unit is used to bring the position and pollution index of the simulated air mass in the simulation overlay pair of each branch into the atmospheric pollution propagation tracing model, and obtain the tracing information of the next node respectively.

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