Method for analyzing long-term response of Antarctic stratosphere ozone to high-energy particle sedimentation

Abstract

The invention discloses a method for analyzing long-term response of ozone in the Antarctic stratosphere to high-energy particle sedimentation, which comprises the following specific steps: firstly, acquiring vertical distribution characteristics of ozone from the Antarctic stratosphere to the middle layer from January to December in 30 years, and drawing a historical vertical distribution diagram; compiling a special method technical scheme for analyzing the long-term response of the ozone in the Antarctic stratosphere to the sedimentation of the high-energy particles, and carrying out technical disclosure to workers; then, the geomagnetic index is adopted as an agent index of high-energy particle sedimentation, a unary linear regression model of the southern hemisphere winter atmospheric variable is established, and the regression model is shown in the specification. The process that high-energy particles are settled and generated and conveyed to the stratosphere through polar region vortex and the ozone loss chemical process of the high-energy particles can be quantitatively analyzed, and the potential influence of extreme space weather events on an earth climate system can be conveniently evaluated.

Description

Technical Field

[0001] This invention belongs to the field of atmospheric science and technology, specifically relating to a method for analyzing the long-term response of Antarctic stratospheric ozone to the deposition of high-energy particles. Background Technology

[0002] Stratospheric ozone absorbs and blocks ultraviolet radiation from the sun, playing a crucial role in protecting life on Earth from UV damage and maintaining the Earth's energy balance. The discovery of the "Antarctic ozone hole" has brought it into the global spotlight. In recent years, extreme space weather events have occurred frequently, and high-energy particle precipitation, as an important manifestation of these events, has significantly impacted Antarctic stratospheric ozone and weather and climate. High-energy particles, under the interaction of the solar wind and the magnetosphere, precipitate along open magnetic field lines into the polar middle and upper atmosphere. These high-energy particles ionize atoms and molecules in the polar mesosphere-thermosphere (MLT), generating nitrogen oxides (NOx). ); In the polar night environment of Antarctica during winter, Photochemical reactions are limited, and the material is stored in the MLT region for several months, transported via the polar vortex. Entering the stratosphere, high-energy particles catalyze the dissipation of stratospheric ozone. During special space weather events, high-energy particle deposition can have a significant short- to medium-term impact on Antarctic stratospheric ozone. However, there is a lack of description of high-energy particle deposition on a climate timescale and a lack of quantitative analysis of its impact on stratospheric ozone.

[0003] Methods for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition cannot quantitatively analyze the generation of high-energy particle deposition. The process by which space weather events are transported to the stratosphere via the polar vortex, and the chemical processes by which they deplete ozone, make it difficult to assess the potential impact of extreme space weather events on the Earth's climate system. Summary of the Invention

[0004] The purpose of this invention is to provide a method for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition, thereby addressing the shortcomings of existing methods in the background art, which cannot quantitatively analyze the generation of high-energy particles during deposition. The process by which space weather events are transported to the stratosphere via the polar vortex, and the chemical processes by which they deplete ozone, make it difficult to assess the potential impact of extreme space weather events on the Earth's climate system.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition, the specific steps of which are as follows: Step 1: Obtain 30 years of data from the Antarctic stratosphere to mesosphere, from January to December. The vertical distribution characteristics of ozone were analyzed, historical vertical distribution maps were drawn, and a method and technical solution for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition was developed. Technical briefings were also provided to the staff. Step 2: Using geomagnetism Using the index as a proxy for high-energy particle deposition, a univariate linear regression model of atmospheric variables in the Southern Hemisphere winter is established. The regression model is expressed as: The regression coefficients were solved using the least squares method. After the value, the response value of atmospheric variables to high-energy particle deposition. for: ; Step 3: Calculate the stratosphere to mesosphere of Antarctica The relative change response value of ozone, when The relative change in atmospheric variables when the index increases by 1 standard deviation; Step 4: Use Pearson correlation analysis to... Correlation analysis was performed between the correlation coefficient and ozone, and the significance of the correlation coefficient was tested using Student's t-test. Step 5: In the stratospheric chemical process, high-energy particles precipitate and ionize in the upper atmosphere, generating a large amount of... In the Antarctic polar night environment, With a long photochemical lifetime, it is transported down to the upper stratosphere via polar vortex dynamics. It reacts chemically with ozone, and the amount of ozone lost in the continuous catalytic cycle is obtained through calculation; Step Six: Under polar vortex transport, It sinks to the upper stratosphere and reacts chemically with ozone. The descent depth extends further downward, exacerbating the chemical depletion of ozone and leading to a reduction in stratospheric ozone. Step Seven: Analysis Chemical reaction mechanism with ozone, obtaining information about the Southern Hemisphere winter Correlation coefficient diagram between ozone and ozone.

[0006] Furthermore; in step two, wherein, It is the dependent variable. It is the independent variable index, It is the regression constant. It is the regression coefficient. It is the random error term; where, Throughout the entire research period The standard deviation of the index.

[0007] Furthermore, the relative change (RC) response of atmospheric variables in step three is calculated as follows: ,in, It is the average value of atmospheric variables within the research period.

[0008] Furthermore, the reaction formula for the core mechanism in step five is as follows: ; Overall reaction: .

[0009] Furthermore; in step four, in the upper stratosphere, Both oxygen and ozone showed a significant negative correlation, indicating that the region... The negative correlation with ozone has significantly increased, with a correlation coefficient of 0.6.

[0010] Furthermore, the spatial distribution range of the negative correlation in the upper stratosphere in step four is further expanded, and the negative correlation coefficient reaches an extreme value of about 0.8 during the study period.

[0011] Compared with the prior art, the beneficial effects of the present invention are: (1) Develop a method and technical plan for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition, and provide technical instructions to staff to ensure that the operation mechanism is well-organized, reduce the fault tolerance rate, and improve the accuracy of revealing the evolution of stratospheric chemistry and dynamics, thereby assessing the potential impact of extreme space weather events on the Earth's climate system.

[0012] (2) Based on climatological data, analyze the deposition of high-energy particles into the middle and upper atmosphere of Antarctica, and the ionization that generates particles with long photochemical lifetimes. In the polar night environment, it is transported to the stratosphere via the polar vortex, and in the stratosphere, Ozone is depleted through chemical catalysis.

[0013] (3) In addition, the specific quantification of the effects of high-energy particle deposition on the middle and upper layers of Antarctica during winter. Analysis of the response changes and relative changes in ozone. Chemical reaction mechanism with ozone, obtaining information about the Southern Hemisphere winter Correlation coefficient diagram between ozone and ozone. Attached Figure Description

[0014] Figure 1 This is a flowchart of a method for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition according to the present invention. Figure 2 The Antarctic average from 1985 to 2014 is the data for this invention. Vertical distribution map of average ozone; Figure 3 For the Southern Hemisphere, June to August of this invention Spatial distribution of ozone response to high-energy particle deposition; Figure 4 For the present invention, Antarctica from June to August Vertical distribution diagram of the relative change response of ozone to high-energy particle deposition; Figure 5 For the Southern Hemisphere, June to August of this invention Correlation coefficient diagram with ozone. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0016] Example 1 A method for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition, the specific steps of which are as follows: Step 1: Obtain 30 years of data from the Antarctic stratosphere to mesosphere, from January to December. The vertical distribution characteristics of ozone were analyzed, historical vertical distribution maps were drawn, and a method and technical solution for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition was developed. Technical briefings were also provided to the staff. Step 2: Using geomagnetism Using the index as a proxy for high-energy particle deposition, a univariate linear regression model of atmospheric variables in the Southern Hemisphere winter is established. The regression model is expressed as: The regression coefficients were solved using the least squares method. After the value, the response value of atmospheric variables to high-energy particle deposition. for: ; Step 3: Calculate the stratosphere to mesosphere of Antarctica The relative change response value of ozone, when The relative change in atmospheric variables when the index increases by 1 standard deviation; Step 4: Use Pearson correlation analysis to... Correlation analysis was performed between the correlation coefficient and ozone, and the significance of the correlation coefficient was tested using Student's t-test. Step 5: In the stratospheric chemical process, high-energy particles precipitate and ionize in the upper atmosphere, generating a large amount of... In the Antarctic polar night environment, With a long photochemical lifetime, it is transported down to the upper stratosphere via polar vortex dynamics. It reacts chemically with ozone, and the amount of ozone lost in the continuous catalytic cycle is obtained through calculation; Step Six: Under polar vortex transport, It sinks to the upper stratosphere and reacts chemically with ozone. The descent depth extends further downward, exacerbating the chemical depletion of ozone and leading to a reduction in stratospheric ozone. Step Seven: Analysis Chemical reaction mechanism with ozone, obtaining information about the Southern Hemisphere winter Correlation coefficient diagram between ozone and ozone.

[0017] In step two, wherein... It is the dependent variable. It is the independent variable index, It is the regression constant. It is the regression coefficient. It is the random error term; where, Throughout the entire research period The standard deviation of the index.

[0018] The relative change (RC) response of atmospheric variables in step three is calculated as follows: ,in, It is the average value of atmospheric variables within the research period.

[0019] Among them, the reaction formula of the core mechanism in step five is: ; Overall reaction: .

[0020] In step four, in the upper stratosphere, Both oxygen and ozone showed a significant negative correlation, indicating that the region... The negative correlation with ozone has significantly increased, with a correlation coefficient of 0.6.

[0021] In step four, the spatial distribution range of the negative correlation in the upper stratosphere is further expanded, and the negative correlation coefficient reaches an extreme value of about 0.8 during the study period.

[0022] When this invention is working: Figure 2 China's Antarctic (a) average from 1985 to 2014 (a) Vertical distribution maps of average ozone (unit: ppbv) and (b), where the black solid lines in (a) are the CO isopleths at 0.1 ppmv and 1 ppmv, respectively; geomagnetic data were used. Using the index as a proxy for high-energy particle deposition, a univariate linear regression model of atmospheric variables in the Southern Hemisphere winter from 1985 to 2014 was established, taking into account the generation of high-energy particle deposition. There is a descent time, which lags atmospheric variables. The index over one month, the regression model is expressed as: The regression coefficients were solved using the least squares method. After the value, the response value of atmospheric variables to high-energy particle deposition. for: ; Figure 3 Central and Southern Hemisphere (0-90°S) June to August (ac) Spatial distribution of ozone (unit: ppbv) and (df) response to high-energy particle deposition; Figure 4 Central Antarctica (a) June, (b) July, (c) August The vertical distribution of the relative change in ozone response to high-energy particle deposition is shown by the blue solid line. The solid red line represents ozone, the red-filled portion represents ozone response loss, and the solid black line is the zero line; this is to accurately quantify the impact of high-energy particle deposition on the middle and upper layers of Antarctica. In addition to the influence of ozone, this invention calculates the stratosphere to mesosphere in Antarctica from June to August. The relative change response value of ozone, when For every 1 standard deviation increase in the index, the relative change (RC) response of the atmospheric variable is: ; Figure 5 (a) June, (b) July, (c) August in the Central and Southern Hemisphere The correlation coefficient plot with ozone shows areas that pass the 95% significance test; in stratospheric chemical processes, ( High-energy particles (HEPs) are a significant factor contributing to ozone depletion, with ionization of the upper atmosphere by high-energy particles generating large amounts of ozone. In the Antarctic polar night environment, With a long photochemical lifetime, it is transported down to the upper stratosphere via polar vortex dynamics. It reacts chemically with ozone, depleting it through a continuous catalytic cycle. The core mechanism is: firstly, It reacts directly with ozone to produce and oxygen ( );then, and oxygen atoms ( Further reactions occur, generating again. and These two reactions alternate in a cycle, forming a continuous catalytic cycle that causes ozone molecules to be continuously consumed. The entire process involves the continuous consumption and conversion of ozone molecules into... This leads to a significant reduction in stratospheric ozone levels. A method and technical scheme for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition was developed and technically briefed to staff to ensure a well-organized operation, reduce the margin for error, and improve the accuracy of revealing the evolution of stratospheric chemistry and dynamics, thereby assessing the potential impact of extreme space weather events on the Earth's climate system. This invention provides a method for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition. Based on climatological data, it analyzes the ionization of high-energy particles entering the middle and upper atmosphere of Antarctica, generating ozone with a long photochemical lifetime. In the polar night environment, it is transported to the stratosphere via the polar vortex, and in the stratosphere, Ozone is depleted through chemical catalysis. Furthermore, the specific quantification of the effects of high-energy particle deposition on the middle and upper atmosphere during the Antarctic winter is needed. Analysis of the response changes and relative changes in ozone. Chemical reaction mechanism with ozone, obtaining information about the Southern Hemisphere winter Correlation coefficient diagram between ozone and ozone.

[0023] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition, characterized in that, The specific steps to achieve this effect are as follows: Step 1: Obtain 30 years of data from the Antarctic stratosphere to mesosphere, from January to December. The vertical distribution characteristics of ozone were analyzed, historical vertical distribution maps were drawn, and a method and technical solution for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition was developed. Technical briefings were also provided to the staff. Step 2: Using geomagnetism Using the index as a proxy for high-energy particle deposition, a univariate linear regression model of atmospheric variables in the Southern Hemisphere winter is established. The regression model is expressed as: The regression coefficients were solved using the least squares method. After the value, the response value of atmospheric variables to high-energy particle deposition. for: ; Step 3: Calculate the stratosphere to mesosphere of Antarctica The relative change response value of ozone, when The relative change in atmospheric variables when the index increases by 1 standard deviation; Step 4: Use Pearson correlation analysis to... Correlation analysis was performed between the correlation coefficient and ozone, and the significance of the correlation coefficient was tested using Student's t-test. Step 5: In the stratospheric chemical process, high-energy particles precipitate and ionize in the upper atmosphere, generating a large amount of... In the Antarctic polar night environment, With a long photochemical lifetime, it is transported down to the upper stratosphere via polar vortex dynamics. It reacts chemically with ozone, and the amount of ozone lost in the continuous catalytic cycle is obtained through calculation; Step Six: Under polar vortex transport, It sinks to the upper stratosphere and reacts chemically with ozone. The descent depth extends further downward, exacerbating the chemical depletion of ozone and leading to a reduction in stratospheric ozone. Step Seven: Analysis Chemical reaction mechanism with ozone, obtaining information about the Southern Hemisphere winter Correlation coefficient diagram between ozone and ozone.

2. The method for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition according to claim 1, characterized in that: In step two, It is the dependent variable. It is the independent variable index, It is the regression constant. It is the regression coefficient. It is the random error term; where, Throughout the entire research period The standard deviation of the index.

3. The method for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition according to claim 1, characterized in that: The relative change response of atmospheric variables in step three is described below. The calculation formula is: ,in, It is the average value of atmospheric variables within the research period.

4. The method for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition according to claim 1, characterized in that: The reaction formula for the core mechanism in step five is: ; Overall reaction: .

5. The method for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition according to claim 1, characterized in that: In step four, in the upper stratosphere, Both oxygen and ozone showed a significant negative correlation, indicating that the region... The negative correlation with ozone has significantly increased, with a correlation coefficient of 0.

6.

6. The method for analyzing the long-term response of Antarctic stratospheric ozone to high-energy particle deposition according to claim 1, characterized in that: In step four, the spatial distribution range of the negative correlation in the upper stratosphere is further expanded, and the negative correlation coefficient reaches an extreme value of about 0.8 during the study period.

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