耦合气溶胶双参数化方案的大气能见度数值改进算法

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Abstract Based on the Mie theory, an improved numerical algorithm for simulating atmosphere visibility was proposed by coupling the parameterization schemes of aerosol complex refractive index (DACRI) and aerosol hygroscopic growth factor Gf(RH). By utilizing the monitored data at an hourly time step recorded by WS600 integrated weather station, AURORA-3000 integrating nephelometer, AE-31aethalometer and GRIMM180 environment particle monitors from October to December in 2017 in Chengdu, the applicability of the improved algorithm was futher evaluated by compared with those of two visibility calculation methods, which are Mie theory model with empirical parameters and statistical model, in different visibility intervals (<2km, 2~5km, 5~10km, >10km). The results show that the three visibility calculation methods can capture the variation characteristics of visibility well; The improved algorithm better simulate visibility by adopting localization parameterization schemes to estimate DACRI and Gf(RH). The corresponding correlation coefficients (R) between the simulation and the observation are 0.62, 0.90, 0.89, and 0.93, respectively. The mean relative error (MRE) are 9.86%, 10.39%, 9.94%, and 14.06%, respectively.

Key words： aerosol complex refractive index hygroscopic growth factor parameterization scheme visibility

Received: 30 March 2021

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X513

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	Articles by authors
	ZHANG Zhi-cha
	NI Chang-jian
	ZHAO Jun-ping
	FENG Miao
	XIE Yan-xin
	WANG Yang-fei

Cite this article:

ZHANG Zhi-cha,NI Chang-jian,ZHAO Jun-ping等. An improved numerical algorithm for simulating atmosphere visibility by coupling two aerosol parameterization schemes[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(11): 5009-5018.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I11/5009

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