气候变化领域集成服务门户(CCPortal): Photopolarimetric retrievals of snow properties

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DOI	10.5194/tc-9-1933-2015
	Photopolarimetric retrievals of snow properties
	Ottaviani M.; Van Diedenhoven B.; Cairns B.
发表日期	2015
ISSN	19940416
卷号	9 期号:5
英文摘要	Polarimetric observations of snow surfaces, obtained in the 410-2264 nm range with the Research Scanning Polarimeter onboard the NASA ER-2 high-altitude aircraft, are analyzed and presented. These novel measurements are of interest to the remote sensing community because the overwhelming brightness of snow plagues aerosol and cloud retrievals based on airborne and spaceborne total reflection measurements. The spectral signatures of the polarized reflectance of snow are therefore worthwhile investigating in order to provide guidance for the adaptation of algorithms currently employed for the retrieval of aerosol properties over soil and vegetated surfaces. At the same time, the increased information content of polarimetric measurements allows for a meaningful characterization of the snow medium. In our case, the grains are modeled as hexagonal prisms of variable aspect ratios and microscale roughness, yielding retrievals of the grains' scattering asymmetry parameter, shape and size. The results agree with our previous findings based on a more limited data set, with the majority of retrievals leading to moderately rough crystals of extreme aspect ratios, for each scene corresponding to a single value of the asymmetry parameter. © 2015 Author(s).
学科领域	aerosol property; airborne survey; algorithm; asymmetry; cloud; data set; reflectivity; remote sensing; scattering; snow
语种	英语
scopus关键词	aerosol property; airborne survey; algorithm; asymmetry; cloud; data set; reflectivity; remote sensing; scattering; snow
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119799
作者单位	NASA, Goddard Institute for Space Studies, 2880 Broadway, New York, NY, United States; Center for Climate System Research, Columbia University, New York, NY, United States
推荐引用方式 GB/T 7714	Ottaviani M.,Van Diedenhoven B.,Cairns B.. Photopolarimetric retrievals of snow properties[J],2015,9(5).
APA	Ottaviani M.,Van Diedenhoven B.,&Cairns B..(2015).Photopolarimetric retrievals of snow properties.Cryosphere,9(5).
MLA	Ottaviani M.,et al."Photopolarimetric retrievals of snow properties".Cryosphere 9.5(2015).