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Multiple scattering of laser pulses in snow over ice: modeling the potential bias in ICESat altimetry

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dc.contributor.author Davis, A. B.
dc.contributor.author Várnai, T.
dc.contributor.author Marshak, A.
dc.date.accessioned 2015-04-22T16:44:53Z
dc.date.available 2015-04-22T16:44:53Z
dc.date.issued 2010-07-05
dc.identifier.citation 25th International Conference on Laser Radar (ILRC 25), St. Petersburg, Russia, July 5-9, 2010 en_US
dc.identifier.clearanceno 10-2218
dc.identifier.uri http://hdl.handle.net/2014/45128
dc.description.abstract The primary goal of NASA’s current ICESat and future ICESat2 missions is to map the altitude of the Earth’s land ice with high accuracy using laser altimetry technology, and to measure sea ice freeboard. Ice however is a highly transparent optical medium with variable scattering and absorption properties. Moreover, it is often covered by a layer of snow with varying depth and optical properties largely dependent on its age. We describe a modeling framework for estimating the potential altimetry bias caused by multiple scattering in the layered medium. We use both a Monte Carlo technique and an analytical diffusion model valid for optically thick media. Our preliminary numerical results are consistent with estimates of the multiple scattering delay from laboratory measurements using snow harvested in Greenland, namely, a few cm. Planned refinements of the models are described. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2010 en_US
dc.title Multiple scattering of laser pulses in snow over ice: modeling the potential bias in ICESat altimetry en_US
dc.type Preprint en_US


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