Spectroscopy and Spectral Analysis, Volume. 33, Issue 6, 1593(2013)
Reflectance Analysis of Seasonal Snow Based on Field Measurement in Fuyun County, Xinjiang Province
Seasonal snow reflectance in the spectral range 350~2 500 nm was collected by a portable spectroradiometer in the field. The experiments were carried out in Fuyun County, Xinjiang Province. Spectral characteristics of snow in the region were drawn by the contrast with ice. And the influence of solar elevation angle, slope, snow depth and contamination on snow reflectance was analyzed. The observations suggest that snow reflectance is high in visible light range and decreases gradually with increasing wavelength. As the solar elevation angle increases, snow reflectance decreases and the maximum variations are observed around 1 090 and 1 300 nm. For the existence of slope, snow reflectance rises significantly. As snow depth increases locally, snow reflectance increases and the maximum variations are observed around 400~500 and 1 250~1 320 nm. As contamination content increases, snow reflectance decreases and troughs and crests of spectral curve flatten. The measurement and analysis of seasonal snow reflectance are of great significance for monitoring and retrieval of snow characteristics.
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LI Yun, ZHAO Shu-he, FENG Xue-zhi, XIAO Peng-feng, LIANG Ji, WANG Jian-geng, LI Hong-xing, YAN Li-li. Reflectance Analysis of Seasonal Snow Based on Field Measurement in Fuyun County, Xinjiang Province[J]. Spectroscopy and Spectral Analysis, 2013, 33(6): 1593
Received: Sep. 21, 2012
Accepted: --
Published Online: Jun. 7, 2013
The Author Email: Yun LI (li0607yun@163.com)