干旱区黑碳沉降积雪反照率及雪粒径模拟研究

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Abstract

Based on the previous research, the single point measured data was used to drive the SNICAR regional physical model, and the microscopic data was combined with the remote sensing macro technology to numerically simulate and invert the snow albedo and SGS. Results showed that the snow albedo increased with the increase of the solar zenith angle, and the impact in the near-infrared region was more obvious. Under different SGS and BC concentrations, the snow albedo decreaseed with the increase of SGS and BC concentration, and the smaller the particles, the smaller the particle size, the more obvious the effect on albedo, and BC was mainly for the visible light band. SNICAR model and MODIS data were used to invert the SGS in northern Xinjiang, the accuracy could reach 0.749, which realized the scale conversion of single-point SGS to planar SGS. Results revealed the continuous change of snow albedo in the presence of aerosol particles in seasonal snow in arid regions, effectively improved the accuracy of snow particle size retrieval in snow. Provided technical support for simulation of radiation stress caused by aerosol particles in snow.

Key words： aridregion black carbon snow grain size SNICAR snow albedo radiation effect

Received: 26 November 2019

PACS:

X513

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	Articles by authors
	CAO Xiao-yi
	DING Jian-li
	CHEN Wen-qian
	WANG Xin
	CUI Jie-can
	ZHANG Zhe

Cite this article:

CAO Xiao-yi,DING Jian-li,CHEN Wen-qian等. Simulation of snow albedo and snow grainsize in black carbon sedimentation in arid areas[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(6): 2345-2352.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I6/2345

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