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Evaluation of AMSR-E snow depth product over East Antarctic sea ice using in situ measurements and aerial photography

Citation

Worby, AP and Markus, T and Steer, AD and Lytle, VI and Massom, RA, Evaluation of AMSR-E snow depth product over East Antarctic sea ice using in situ measurements and aerial photography, Journal of Geophysical Research: Oceans, 113, (C5) Article C05S94. ISSN 2169-9275 (2008) [Refereed Article]


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Copyright Statement

Copyright 2008 American Geophysical Union

DOI: doi:10.1029/2007JC004181

Abstract

The Antarctic Remote Ice Sensing Experiment (ARISE) was conducted in the East Antarctic sea ice zone during September–October 2003. A key objective of this program was the acquisition of in situ measurements suitable for evaluating the EOS Aqua Advanced Microwave Scanning Radiometer (AMSR‐E) snow depth product. A strategy is presented for comparing snow thickness measurements over spatial scales ranging from point measurements to satellite pixels. In situ measurements of snow thickness were taken across eight Lagrangian grid cells defined and tracked using an array of drifting buoys. These data are coupled with ice‐type analyses from digital aerial photographs to calculate area‐averaged snow thicknesses that are compared with the AMSR‐E derived snow thickness product. The results show considerable underestimates of the AMSR‐E snow depths for rough sea ice by a factor of 2.3. We investigate the impact of underlying sea ice roughness on snow depth retrievals and conclude that in situ measurements of snow thickness underrepresent snow depth over rough ice, which is then not adequately accounted for in the development of the algorithm coefficients.

Item Details

Item Type:Refereed Article
Keywords:Antarctic, snow depth, sea ice, satellite remote sensing, passive microwave
Research Division:Earth Sciences
Research Group:Physical Geography and Environmental Geoscience
Research Field:Glaciology
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Physical Sciences
UTAS Author:Worby, AP (Professor Anthony Worby)
UTAS Author:Steer, AD (Mr Adam Steer)
UTAS Author:Massom, RA (Dr Robert Massom)
ID Code:129195
Year Published:2008
Web of Science® Times Cited:47
Deposited By:CRC-Antarctic Climate & Ecosystems
Deposited On:2018-11-14
Last Modified:2018-12-11
Downloads:42 View Download Statistics

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