气候变化领域集成服务门户(CCPortal): Retrieving the characteristics of slab ice covering snow by remote sensing

CCPortal

DOI	10.5194/tc-10-2113-2016
	Retrieving the characteristics of slab ice covering snow by remote sensing
	Andrieu F.; Schmidt F.; Schmitt B.; Douté S.; Brissaud O.
发表日期	2016
ISSN	19940416
卷号	10 期号:5
英文摘要	We present an effort to validate a previously developed radiative transfer model, and an innovative Bayesian inversion method designed to retrieve the properties of slab-ice-covered surfaces. This retrieval method is adapted to satellite data, and is able to provide uncertainties on the results of the inversions. We focused on surfaces composed of a pure slab of water ice covering an optically thick layer of snow in this study. We sought to retrieve the roughness of the ice-air interface, the thickness of the slab layer and the mean grain diameter of the underlying snow. Numerical validations have been conducted on the method, and showed that if the thickness of the slab layer is above 5ĝ€mm and the noise on the signal is above 3ĝ€%, then it is not possible to invert the grain diameter of the snow. In contrast, the roughness and the thickness of the slab can be determined, even with high levels of noise up to 20ĝ€%. Experimental validations have been conducted on spectra collected from laboratory samples of water ice on snow using a spectro-radiogoniometer. The results are in agreement with the numerical validations, and show that a grain diameter can be correctly retrieved for low slab thicknesses, but not for bigger ones, and that the roughness and thickness are correctly inverted in every case. © Author(s) 2016.
学科领域	air-ice interaction; ice cover; ice thickness; innovation; numerical model; radiative transfer; remote sensing; satellite data; signal-to-noise ratio; slab; snow cover; surface roughness
语种	英语
scopus关键词	air-ice interaction; ice cover; ice thickness; innovation; numerical model; radiative transfer; remote sensing; satellite data; signal-to-noise ratio; slab; snow cover; surface roughness
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/119581
作者单位	GEOPS, Univ. Paris-Sud, CNRS, Université Paris-Saclay, Rue du Belvédère, Bât. 504-509, Orsay, 91405, France; Univ. Grenoble Alpes, IPAG, Grenoble, 38000, France; CNRS, IPAG, Grenoble, 38000, France
推荐引用方式 GB/T 7714	Andrieu F.,Schmidt F.,Schmitt B.,et al. Retrieving the characteristics of slab ice covering snow by remote sensing[J],2016,10(5).
APA	Andrieu F.,Schmidt F.,Schmitt B.,Douté S.,&Brissaud O..(2016).Retrieving the characteristics of slab ice covering snow by remote sensing.Cryosphere,10(5).
MLA	Andrieu F.,et al."Retrieving the characteristics of slab ice covering snow by remote sensing".Cryosphere 10.5(2016).