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Photopolarimetric Retrievals of Snow Properties : Volume 9, Issue 3 (29/05/2015)

By Ottaviani, M.

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Book Id: WPLBN0004023213
Format Type: PDF Article :
File Size: Pages 20
Reproduction Date: 2015

Title: Photopolarimetric Retrievals of Snow Properties : Volume 9, Issue 3 (29/05/2015)  
Author: Ottaviani, M.
Volume: Vol. 9, Issue 3
Language: English
Subject: Science, Cryosphere, Discussions
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Ottaviani, M., Cairns, B., & Diedenhoven, B. V. (2015). Photopolarimetric Retrievals of Snow Properties : Volume 9, Issue 3 (29/05/2015). Retrieved from

Description: NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY, USA. 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 air- and space-borne 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 dataset, 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.

Photopolarimetric retrievals of snow properties

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