干旱区生态环境知识资源中心(Arid): Simulation of Spectral Albedo Mixing of Snow and Aerosol Particles

Arid

DOI	10.3964/j.issn.1000-0593(2020)02-0446-08
	Simulation of Spectral Albedo Mixing of Snow and Aerosol Particles
	Chen Wen-qian 1,2; Ding Jian-li1,2 ; Wang Xin 3; Pu Wei 3; Zhang Zhe 1,2; Shi Teng-long 3
通讯作者	Ding Jian-li
来源期刊	SPECTROSCOPY AND SPECTRAL ANALYSIS
ISSN	1000-0593
出版年	2020
卷号	40 期号:2 页码:446-453
英文摘要	Aerosol particles of Black carbon in the snow cause a significant decrease in the albedo spectrum of the snow, which results in climatic radiation changes seriously, and will delay or advance the snow melting time, badly affecting the characteristics of surface runoff and processes of water cycle in the arid region. This problem is receiving increasing attention in ecological hydrology issues in the arid region. The data of field measurement were obtained by ASD spectrometer, Snow Folk and HR-1024 external field spectrum radiometer. SNICAR model was used to simulate the snow spectrum spectral characteristics under different parameters. Discussed the sensitivity of BC and snow particle size in different spectral ranges. The results showed that : In the snow spectral curve, the zenith angle changes from 0 degrees to 80 degrees, the albedo at 600 nm in the visible spectrum increases by 0. 045, and the albedo at 1 000, 1 200 and 1 300 nm in the near-infrared band increases by 0. 16, 0. 225 and 0. 249, respectively. The zenith angle is at 60 degrees, when snow particle size increases from 100 to 800 mu m, the albedo reduction can reach 0. 15, and snow particle size in the range of 100 similar to 300 mu m is significantly higher than the albedo in the range of 400 similar to 800 mu m. And the increase of the snow particle size can enhance the absorption effect of the light spectrum absorbing particles; Different BC concentrations have little effect on the spectral albedo in the near-infrared region, but are mainly concentrated in the visible light band. At 800 and 1 100 nm, the BC concentration of 5 mu g . g(-1) reduces the spectral albedo by 0. 13. The BC of 5 mu g . g(-1) can reduce the spectral albedo at 350 and 550 nm by 0. 25 and 0. 23. Compared with the different snow sizes, the decrease of BC concentration on the broad-band albedo of snow spectrum can be found in BC. In the case of the increase in the particle size of the snow, the light absorption effect of BC is increased, and at the higher concentration, the more the absorption increases; from the spectral index, the BC is sensitive in the visible light range of 350-740 nm, and the correlation coefficient is higher; The snow size is sensitive in the near-infrared band 1 100 similar to 1 500 nm, especially around 1 000 and 1 300 nm. The correlation between BC and snow particle size in the sensitive band of the snow spectral curve is high. Finally, the snow albedo simulated by the model is compared with the measured data. The R-2 is 0. 738, and the simulation effect is good. It can lay a data foundation for the study of the snow albedo in the arid region.
英文关键词	Arid zone Snow spectral albedo Black carbon Snow particle size Spectral index
类型	Article
语种	中文
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000528834600020
WOS关键词	BLACK CARBON ; MINERAL DUST
WOS类目	Spectroscopy
WOS研究方向	Spectroscopy
来源机构	兰州大学 ; 新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318499
作者单位	1.Xinjiang Univ, Xinjiang Common Univ, Key Lab Smart City & Environm Stimulat, Urumqi 830046, Peoples R China; 2.Minist Educ, Key Lab Oasis Ecol, Urumqi 830046, Peoples R China; 3.Lanzhou Univ, Coll Atmospher Sci, Key Lab Semiarid Climate Change, Minist Educ, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Chen Wen-qian,Ding Jian-li,Wang Xin,et al. Simulation of Spectral Albedo Mixing of Snow and Aerosol Particles[J]. 兰州大学, 新疆大学,2020,40(2):446-453.
APA	Chen Wen-qian,Ding Jian-li,Wang Xin,Pu Wei,Zhang Zhe,&Shi Teng-long.(2020).Simulation of Spectral Albedo Mixing of Snow and Aerosol Particles.SPECTROSCOPY AND SPECTRAL ANALYSIS,40(2),446-453.
MLA	Chen Wen-qian,et al."Simulation of Spectral Albedo Mixing of Snow and Aerosol Particles".SPECTROSCOPY AND SPECTRAL ANALYSIS 40.2(2020):446-453.