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Generation of high-resolution East Antarctic landfast sea-ice maps from cloud-free MODIS satellite composite imagery


Fraser, AD and Massom, RA and Michael, KJ, Generation of high-resolution East Antarctic landfast sea-ice maps from cloud-free MODIS satellite composite imagery, Remote Sensing of Environment, 114, (12) pp. 2888-2896. ISSN 0034-4257 (2010) [Refereed Article]

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DOI: doi:10.1016/j.rse.2010.07.006


A method to generate high spatio-temporal resolution maps of landfast sea ice from cloud-free MODIS composite imagery is presented. Visible (summertime) and thermal infrared (wintertime) cloud-free 20-day MODIS composite images are used as the basis for these maps, augmented by AMSR-E ASI sea-ice concentration composite images (when MODIS composite image quality is insufficient). The success of this technique is dependent upon efficient cloud removal during the compositing process. Example wintertime maximum (~374,000 km2) and summertime minimum (~112,000 km2) fast-ice maps for the entire East Antarctic coast are presented. The summertime minimum map provides the first high-resolution indication of multi-year fast-ice extent, which may be used to help assess changes in Antarctic sea-ice volume. The 2σ errors in fast-ice extent are estimated to be ±2.98% when ≥90% of the fast-ice pixels in a 20-day period are classified using the MODIS composite, or ±8.76 otherwise (when augmenting AMSR-E or the previous/next MODIS composite image is used to classify N10% of the fast ice). Imperfect composite image quality, caused by persistent cloud, inaccurate cloud masking or a highly dynamic fast-ice edge, was the biggest impediment to automating the fast-ice detection procedure.

Item Details

Item Type:Refereed Article
Keywords:Antarctica, Sea ice, Landfast sea ice, Fast ice, Satellite remote sensing
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 earth sciences
UTAS Author:Fraser, AD (Dr Alex Fraser)
UTAS Author:Massom, RA (Dr Robert Massom)
UTAS Author:Michael, KJ (Dr Kelvin Michael)
ID Code:67732
Year Published:2010
Web of Science® Times Cited:27
Deposited By:IMAS Research and Education Centre
Deposited On:2011-03-07
Last Modified:2012-04-18
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