Fitting of Hygroscopic Factor Between PM<sub>2.5</sub> Mass Concentration and Aerosol Backscattering Coefficient in Hefei Area

Hui Zhang; Zongming Tao; Xiaomin Ma; Huihui Shan; Shenhao Wang; Dong Liu; Chenbo Xie; Yingjian Wang

doi:10.3788/CJL201845.0704006

Chinese Journal of Lasers, Volume. 45, Issue 7, 0704006(2018)

Fitting of Hygroscopic Factor Between PM_2.5 Mass Concentration and Aerosol Backscattering Coefficient in Hefei Area

Hui Zhang¹, Zongming Tao^{1、* *}, Xiaomin Ma^1,2,3, Huihui Shan¹, Shenhao Wang¹, Dong Liu², Chenbo Xie², and Yingjian Wang²

Author Affiliations

¹ Teaching & Research Section of Physics, Department of Basic Sciences, PLA Army Academy of Artillery and Air Defense, Hefei, Anhui 230031, China;

² Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China

³ University of Science and Technology of China, Hefei, Anhui 230031, China

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Figures & Tables(5)

Fig. 1. Case study. (a) Relationship between PM2.5 mass concentration and time; (b) relationship between relative humidity and time; (c) relationship between aerosol backscattering coefficient and time; (d) relativity between measured and fitted PM2.5 mass concentration

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Fig. 2. Case study. (a) Relationship between PM2.5 mass concentration and time; (b) relationship between relative humidity and time; (c) relationship between aerosol backscattering coefficient and time; (d) relativity between measured and fitted PM2.5 mass concentration

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Fig. 3. Relativity between fitted and measured PM2.5mass concentration

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Table 1. Data and fitting result from 08:00 to 24:00 on December 6, 2016

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Table 1. Data and fitting result from 08:00 to 24:00 on December 6, 2016

Time	C'_PM2.5 /(μg·m^-3)	β /(km^-1·sr^-1)	R_H /%	Fitting result by C_PM2.5=7680β·(1-R_H+40%)
08:00	63.7	0.01	61	60.7
09:00	64.1	0.01	61	60.7
10:00	53.6	0.008	61.1	48.5
11:00	60.4	0.0095	59.2	58.9
12:00	59.7	0.0095	55.2	61.9
13:00	69.9	0.0105	51.6	71.3
14:00	62.9	0.009	47.7	63.8
15:00	55.1	0.0073	45.4	53.5
16:00	44.7	0.007	39.8	53.9
17:00	53.1	0.008	43.7	59.25
18:00	69.5	0.011	49.3	76.6
19:00	74.9	0.012	56.3	77.1
20:00	81.5	0.013	59.5	80.4
21:00	91.5	0.014	61.1	84.9
22:00	91.3	0.0142	60.7	86.1
23:00	91.5	0.015	62.9	88.9
24:00	94.1	0.016	63.9	93.4

Table 2. Data and fitting result from September 28, 20:00 to September 29, 05:00 in 2017

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Table 2. Data and fitting result from September 28, 20:00 to September 29, 05:00 in 2017

Time	C'_PM2.5 /(μg·m^-3)	β /(km^-1·sr^-1)	R_H /%	Fitting result by C_PM2.5=12000β·(1-R_H+40%)
20:00	12.6	0.00176	70	14.8
21:00	24.1	0.00248	67.5	21.6
22:00	18.5	0.00234	68.5	20.1
23:00	23.1	0.003	72.2	24.4
24:00	27.6	0.00326	73.4	26.1
01:00	21.5	0.00304	75.3	23.6
02:00	29.2	0.00421	78.7	31.0
03:00	26.4	0.00382	80.9	27.1
04:00	29.8	0.00429	82	29.9
05:00	28	0.00421	83.5	28.6

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Hui Zhang, Zongming Tao, Xiaomin Ma, Huihui Shan, Shenhao Wang, Dong Liu, Chenbo Xie, Yingjian Wang. Fitting of Hygroscopic Factor Between PM_2.5 Mass Concentration and Aerosol Backscattering Coefficient in Hefei Area[J]. Chinese Journal of Lasers, 2018, 45(7): 0704006

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Paper Information

Category: measurement and metrology

Received: Nov. 28, 2017

Accepted: --

Published Online: Sep. 11, 2018

The Author Email: Zongming Tao (zmtao@aiofm.ac.cn)

DOI:10.3788/CJL201845.0704006

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology