Particle Size Distribution Analysis of Submicron Marine Aerosol Based on Shipboard Measurement

Pei Tang; Shiyong Shao; Qiang Liu; Manman Xu; Haixu Wang; Yong Han

doi:10.3788/AOS221544

Acta Optica Sinica, Volume. 43, Issue 6, 0601008(2023)

Particle Size Distribution Analysis of Submicron Marine Aerosol Based on Shipboard Measurement

Pei Tang^1,2, Shiyong Shao^1、*, Qiang Liu¹, Manman Xu^1,2, Haixu Wang¹, and Yong Han³

¹Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanic, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, China

²Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, Anhui, China

³School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai 519000, Guangdong, China

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Figures & Tables(11)

Fig. 1. Variation of aerosol number concentration and offshore distance. (a) 2019-06-08; (b) 2019-06-16

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Fig. 2. Diurnal variation of total aerosol number concentration and offshore distance

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Fig. 3. Diurnal variation of proportions of aerosol number concentrations of three modes and offshore distance

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Fig. 5. Daily variations in meteorological elements from June 12 to June 17, 2019. (a) Temperature; (b) specific humidity; (c) wind speed; (d) wind direction

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Fig. 6. Back trajectories of air masses before and after cold front

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Fig. 7. Distribution variation of marine aerosol components before and after cold front. (a) 12:00 at 2019-06-13; (b) 12:00 at 2019-06-14; (c) 12:00 at 2019-06-15; (d) 12:00 at 2019-06-16

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Fig. 8. Particle size distribution variation of marine aerosol components before and after cold front

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Table 1. Aerosol number concentrations of three modes in different regions

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Table 1. Aerosol number concentrations of three modes in different regions

Area	Nucleation mode	Aitken mode	Accumulation mode	Total	Ref.
Northeastern South China Sea at 2019-06-08	960	3481	2371	6812 $\pm$ 1759	Proposed
Northeastern South China Sea at 2019-06-09	746	2982	1317	5045 $\pm$ 1785	Proposed
Northeastern South China Sea at 2019-06-10	622	2943	1450	5015 $\pm$ 1856	Proposed
Northeastern South China Sea at 2019-06-11	180	1073	839	2092 $\pm$ 656	Proposed
Northeastern South China Sea at 2019-06-12	289	1719	1361	3369 $\pm$ 1332	Proposed
Northeastern South China Sea at 2019-06-13	55	1254	1070	2379 $\pm$ 789	Proposed
Northeastern South China Sea at 2019-06-14	68	874	803	1745 $\pm$ 423	Proposed
Northeastern South China Sea at 2019-06-15	174	1406	1232	2812 $\pm$ 1222	Proposed
Northeastern South China Sea at 2019-06-16	237	939	662	1838 $\pm$ 1013	Proposed
Northeastern South China Sea at 2019-06-17	384	1426	954	2764 $\pm$ 1718	Proposed
Northeastern South China Sea at 2019-06-18	568	1930	824	3322 $\pm$ 1205	Proposed
Yellow Sea at 2005-03				3638 $\pm$ 1779	［13］
East China Sea at 2005-05				2075 $\pm$ 985	［13］
Northeastern South China Sea at 2012-09				2150 $\pm$ 150	［17］
Central South China Sea at 2012-10				1000 $\pm$ 200	［17］
Urban area in Beijing at 2011-12	4108	18359	8538	23152	［33］

Table 2. Particle size distribution statistics of marine aerosols
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Table 2. Particle size distribution statistics of marine aerosols
Date Single peak Double peak Triple peak
2019-06-08 207 136 8
2019-06-10 311 223 11
2019-06-13 308 123 2

Table 3. Log-normal fitting parameters of number concentration spectra in three sea areas

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Table 3. Log-normal fitting parameters of number concentration spectra in three sea areas

Area	Mode 1			Mode 2
Area	σ_gm	d_gm /nm	N₀ /cm^-3	σ_gm	d_gm /nm	N₀ /cm^-3
Northeastern South China Sea at 2019-06-08	1.71	21.7	247	1.31	105.5	91
Northeastern South China Sea at 2019-06-10	1.28	91.4	55
Northeastern South China Sea at 2019-06-13	1.28	98.2	32
Yellow Sea at 2005-03	1.23	31.0	851	1.48	91.0	248
East China Sea at 2005-05	1.31	41.0	361	1.42	105.0	124

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Pei Tang, Shiyong Shao, Qiang Liu, Manman Xu, Haixu Wang, Yong Han. Particle Size Distribution Analysis of Submicron Marine Aerosol Based on Shipboard Measurement[J]. Acta Optica Sinica, 2023, 43(6): 0601008

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