Mesoscale atmospheric photochemistry pollution simulation and prediction algorithm for increasing methane chemokinesis

Abstract

The invention discloses a mesoscale atmospheric photochemistry pollution simulation and prediction algorithm for increasing methane chemokinesis. Based on a CALGRID chemical mode, the influences of atmospheric chemical reactions, atmospheric transportation and dispersion, settling, ground surface sources and elevated emission sources are considered, the average quantity of the physical quantity inoriginal concentration of chemical species is decomposed into the pulsating quantity, on this basis, OH free radicals and CH4 serve as variables, a chemical reaction of the OH free radicals and methane (CH4) is introduced, and the concentration change of the OH free radicals and CH4 is calculated according to a chemical reaction list of the OH free radicals and CH4. By means of the mesoscale atmospheric photochemistry pollution simulation and prediction algorithm for increasing the methane chemokinesis, an air quality mode is utilized to simulate spatial and temporal distribution of the OH free radicals and CH4, which is beneficial to knowing of the atmospheric oxidation capability of a simulation area and deep knowing of details of a photochemical reaction.

Description

technical field [0001] The invention belongs to the technical field of atmospheric environmental pollutant detection, and in particular relates to an improved prediction model of mesoscale atmospheric photochemical pollution. Background technique [0002] The air quality model is based on the understanding of a series of physical and chemical processes such as transmission, diffusion, transformation and removal of pollutants discharged into the atmosphere, using research methods and computer technologies in meteorology, environment, physics, chemistry and other disciplines. The method of simulating and forecasting the distribution and trend of air pollutant concentration on different spatial scales has important practical application value in air quality forecasting, air pollution control, environmental planning and management, urban construction and public health, and has Broad development prospects. [0003] CALGRID was developed by the ARB (Air Resources Board) in Califo...

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Problems solved by technology

Therefore, CALGRID is limited in practical application, and does not consider the impact of methane emissions from natural sources on OH radicals, which may cause distortion or deviation in the final simulation.

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