MCM box model modeling method and source analysis of atmospheric O3

Ozone pollution not only has an important impact on the climate, but also seriously damages human health and plant growth.In order to effectively and accurately control regional atmospheric ozone pollution, it is necessary to understand the main pathways of ozone generation and their precursors.The OBM box model can be used to simulate the occurrence and evolution of photochemical pollution, study the formation mechanism of ozone, conduct sensitivity analysis, and explore the impact of precursor emissions on photochemical pollution.The box model usually consists of chemical mechanism, physical process, initial conditions, input and output modules, and chemical mechanism is its core part.MCM (Master Chemical Mechanism) contains about 6,700 organic compounds and about 17,000 reactions, which can describe the chemical processes of atmospheric gas-phase organic compounds in detail, and are widely used in the field of atmospheric scientific research.Master the basic knowledge of atmospheric ozone generation, the establishment of the MCM box model, and the techniques for judging the controlling precursors of O3 generation.

 ///  MCM box model modeling method and atmospheric O3 source analysis practical technical application

[Expert]: Mr. Zhou (Associate Professor), a senior expert from the Chinese Academy of Sciences and key universities; has long been engaged in the source analysis of aerosols and atmospheric particulate matter, has rich experience in scientific research, and chairs and participates in manyrelated topics and engineering projects, with a deep technical background and professional background.

1. Knowledge base of O3 formation in the atmosphere, principles of MCM and Atchem2 and Linux system installation
1. In the atmosphereThe principle knowledge of O3 formation

2. MCM principle and basic process explanation
3. Atchem 2 explanation and download and installation
4. Linux system installation
5. Other tools required for Atchem 2 to run A, Fortran; B, Python; C, make, cmake

Second, MCM modeling, data input, model operation and result output [explanation + case operation]
1. MCM box model establishment
1) Chemical mechanism A, Facsimile format; B, RO2; C, extraction of MCM
2) Setting of model parameters
3) Environmental variablesA, temperature; B, atmospheric pressure; C, relative humidity; D, water; E, solar altitude; F, boundary layer height; G, aerosol surface area; H, diffusion rate; I, JFAC; J, Roof
4) Photolysis rate A, constant photolysis rate; B, limited photolysis rate; C, calculated photolysis rate; D, JFAC calculation
5) Various config. files
2, MCM box modelRunning
3. Analysis of MCM model running results
Case: Analyze the running results of MCM box model

III. O3 Formation Pathway, Generation Potential and Sensitivity Analysis [Explanation + Case Operation]
1. O3 Formation Pathway

Case:Contribution of Different Reaction Pathways to O3 Formation
2, O3 Sensitivity Analysis Ⅰ: Relative Incremental Reactivity Method (RIR)
Case: Determine the main source of O3 through the calculation of RIR
3. O3 Sensitivity Analysis II: EKMA Curve Drawing
1) O3 Contour Data Acquisition
2) EKMA Curve Drawing
Case:By drawing the EKMA curve, determine the main source of O3

4, O3 Generation Potential
Case:VOCSCalculation of O3 Generation Potential

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