The research of the relationship between snow properties and the bidirectional polarized reflectance from snow surface

• Published in: Guang pu xue yu guang pu fen xi Vol. 34; no. 10; p. 2873
• Main Authors: Sun, Zhong-Qiu, Wu, Zheng-Fang, Zhao, Yun-Sheng
• Format: Journal Article
• Language: Chinese
• Published: China 01.10.2014
• ISSN: 1000-0593
• DOI: 10.3964/j.issn.1000-0593(2014)10-2873-05

In the context of remote sensing, the reflectance of snow is a key factor for accurate inversion for snow properties, such as snow grain size, albedo, because of it is influenced by the change of snow properties. The polarized reflectance is a general phenomenon during the reflected progress in natural incident light In this paper, based on the correct measurements for the multiple-angle reflected property of snow field in visible and near infrared wavelength (from 350 to 2,500 nm), the influence of snow grain size and wet snow on the bidirectional polarized property of snow was measured and analyzed. Combining the results measured in the field and previous conclusions confirms that the relation between polarization and snow grain size is obvious in infrared wavelength (at about 1,500 nm), which means the degree of polarization increasing with an increase of snow grain size in the forward scattering direction, it is because the strong absorption of ice near 1,500 nm leads to the single scattering light contri