Simultaneous determination of aerosol optica depth and exponent of the Junge power law from MODIS shortwave infrared bands over Qinghai Lake

doi:10.1364/AO.57.006497

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院安徽光学精密机械研究所

	Simultaneous determination of aerosol optica depth and exponent of the Junge power law from MODIS shortwave infrared bands over Qinghai Lake
	Zhu, Lin 1,4; Xu, Qingshan 4; Cheng, Chen 1,4; Sun, Xiongwei 1,4; Wu, Pengfei 2; Yang, Lei 3
刊名	APPLIED OPTICS
	2018-08-01
卷号	57 期号:22 页码:6497-6502
ISSN号	1559-128X
DOI	10.1364/AO.57.006497
通讯作者	Xu, Qingshan(qshxu@aiofm.ac.cn)
英文摘要	The water-leaving radiances for shortwave infrared (SWIR) channels can be negligible, and these channels also contain information on aerosol particle size. Therefore, the satellite-based data of SWIR channels can be used to estimate aerosol particle size over inland waters [Appl. Opt. 39, 887 (2000)]. Supposing the actual atmospheric aerosol size distribution is based on the Junge power law, in this paper an iterative algorithm is used to simultaneously determine the aerosol optical depth (AOD) and the exponent of the lunge power law from Aqua MODIS LIB reflectance data of channels 1.64 mu m and 2.13 mu m over Qinghai Lake. Whether using the constant or variable aerosol complex refractive index (ACRI), the retrieved exponent of the Junge power law is always larger than the product value. Supposing the product values are accurate, for the constant ACRI, there are 68.91% and 25.48% pixels of acceptable retrieval AOD and the exponent of the Junge power-law value, respectively. Likewise, there are 71.63% and 43.75% pixels for variable ACRI. Compared with the retrieval error under constant ACRI, there are 58.65% and 98.72% pixels, with a smaller AOD and Junge power-law index retrieval error under variable ACRIs, respectively. In addition, the precision of the AOD retrieved with variable ACRI is improved when the AOD product is less than 0.17. However, under the current environment with frequent aerosol particle pollution, the same ACRI for the ten wavelengths can achieve results with equivalent accuracy compared with variable ACRI. (C) 2018 Optical Society of America
资助项目	National Natural Science Foundation of China (NSFC)[41505023]
WOS关键词	OCEAN COLOR IMAGERY ; ATMOSPHERIC CORRECTION ; SIZE DISTRIBUTION ; THICKNESS ; ALGORITHM ; SIMULATIONS ; RADIANCE
WOS研究方向	Optics
语种	英语
出版者	OPTICAL SOC AMER
WOS记录号	WOS:000440439900061
资助机构	National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/37763]
专题	合肥物质科学研究院_中科院安徽光学精密机械研究所
通讯作者	Xu, Qingshan
作者单位	1.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Atmospher Opt, Hefei 230031, Anhui, Peoples R China 3.SOA, Inst Oceanog 1, Qingdao 266061, Peoples R China 4.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Lab Photoelect Detect, Hefei 230031, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Lin,Xu, Qingshan,Cheng, Chen,et al. Simultaneous determination of aerosol optica depth and exponent of the Junge power law from MODIS shortwave infrared bands over Qinghai Lake[J]. APPLIED OPTICS,2018,57(22):6497-6502.
APA	Zhu, Lin,Xu, Qingshan,Cheng, Chen,Sun, Xiongwei,Wu, Pengfei,&Yang, Lei.(2018).Simultaneous determination of aerosol optica depth and exponent of the Junge power law from MODIS shortwave infrared bands over Qinghai Lake.APPLIED OPTICS,57(22),6497-6502.
MLA	Zhu, Lin,et al."Simultaneous determination of aerosol optica depth and exponent of the Junge power law from MODIS shortwave infrared bands over Qinghai Lake".APPLIED OPTICS 57.22(2018):6497-6502.