COMPARATIVE STUDY ON THE CALCULATION SCHEME OF PHOTOCHEMICAL OXIDATION IN AIR QUALITY MODEL

摘要

Photochemical smog is an important phenomenon in air pollution.The source of photochemical smog is very complicated and involves many chemical reactions.Therefore,it is necessary to study the changes in each chemical reaction in details to clearly describe and calculate its changes.This article discusses the chemical reaction formulas used in the three commonly used air quality models.The main reason is because there are too many chemical reactions in atmospheric chemistry,so the air quality models can not include all chemical reactions in the calculation procedures.Will this have an excessive impact on the evaluation results? It deserves our attention.This article compares the photochemical reactions of air pollutants used in the Gaussian plume model,puff model,and grid model,as well as those representative reaction mechanisms used in each model,and finally points out that due to these different calculations approach,these models can be applied in the various places for more appropriate applications.