AERMOD大气扩散模型研究综述

AERMOD模型是美国环保局和美国气象学会联合开发的一种大气扩散模型,它采用了最新的大气边界层和大气扩散理论,替代ISC(Industrial Source Complex)模型成为美国的新一代法规模型,该模型已被列入我国环境影响评价技术导则--大气环境(HJ/T2.2-2008)推荐模型之一。国内外针对该模型开展了很多研究,主要集中在:AERMOD模型与其它大气扩散模型的对比研究和评价;AERMOD模型运行所需气象数据的模拟以及AERMOD模型在某些领域中的具体应用。AERMOD模型较我国旧版环境影响评价技术导则--大气环境(HJ/T2.2-93)推荐模型更能反映污染物的实际扩散规律,但由于目前该模型系统在国内的应用不算广泛,而且该模型本身也一直在不断完善当中,因此,为验证它的可靠性、合理性及实用性并确定其预报准确率,建议在该模型推广应用到一个新的地区或城市之前应当经过模型评估过程。

Development of AERMOD Dispersion Model

AERMOD is an atmospheric dispersion model developed by U.S.Environmental Protection Agency (EPA)and American Meteorological Society (AMS).Up to date atmospheric boundary and dispersion theories were used in the model,which substituted for ISC(Industrial Source Complex)model to be U.S.regulatory model.AERMOD model was also listed as one of the recommended models in the national technical guidelines of environmental impact assessment(EIA)——atmospheric environment (HJ/T2.2-2008)in China.Lots of studies were done on the model,with focus on comparison studies between AERMOD model and other models and AERMOD model evaluation,meteorological data simulation for successful AERMOD model runs and the application of AERMOD model in certain fields.AERMOD model is superior to the last recommended model in national technical guidelines of environmental impact assessment——atmospheric environmen(tHJ/T2.2-93),but due to its ever developing and not too much application in China,it suggested that the model should pass the appraisal process before its application in a new area or a new city where the model has never been used before,in order to verify its reliability,feasibility and accuracy.