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Record #164650:

Blue-ice areas in Antarctica derived from NOAA AVHRR satellite data / Jan-Gunnar Winther, Martin Nørman Jespersen, Glen E. Liston.

Title: Blue-ice areas in Antarctica derived from NOAA AVHRR satellite data / Jan-Gunnar Winther, Martin Nørman Jespersen, Glen E. Liston.
Author(s): Winther, Jan-Gunnar.
Jespersen, Martin Nørman.
Liston, Glen E.
Date: 2001.
In: Journal of Glaciology. (2001.), Vol. 47(157) (2001)
Abstract: Uses NOAA AVHRR mosaic to locate and quantify blue ice areas (BIAs). Aims to aid future assessment of contribution from surface and near surface melt to Antarctic mass balance. May also serve as benchmark against which future measurements may indicate regional climate change. Uses ground truth from Dronning Maud Land and Lambert Glacier/Amery Ice Shelf and Landsat Thematic Mapper data with high spatial resolution to provide reference data for blue-ice classification using AVHRR. Overall finds AVHRR band1/band2 image ratio most appropriate discriminator, using specific algorithms for each scene in mosaic. Hindered by using digital numbers from processed AVHRR mosaic rather than original radiance values. Presents results in tabular and graphical forms classified as wind-induced, melt-induced or potential/uncertain BIAs. Identifies 120 000 km² of blue ice and a similar area that may be blue ice.
Notes:

Journal of Glaciology. Vol. 47(157) :325-334 (2001).

Keywords: 551.324 -- Land ice.
551.324.4 -- Land ice, mass and energy balance.
53.087.23 -- Remote sensing.
551.32 -- Glaciology.
E5 -- Glaciology: land ice.
(*7) -- Antarctic regions.
(*73) -- Dronning Maud Land.
(*743.7) -- Lambert Basin.
SPRI record no.: 164650

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500 ## ‡aJournal of Glaciology. Vol. 47(157) :325-334 (2001).
520 3# ‡aUses NOAA AVHRR mosaic to locate and quantify blue ice areas (BIAs). Aims to aid future assessment of contribution from surface and near surface melt to Antarctic mass balance. May also serve as benchmark against which future measurements may indicate regional climate change. Uses ground truth from Dronning Maud Land and Lambert Glacier/Amery Ice Shelf and Landsat Thematic Mapper data with high spatial resolution to provide reference data for blue-ice classification using AVHRR. Overall finds AVHRR band1/band2 image ratio most appropriate discriminator, using specific algorithms for each scene in mosaic. Hindered by using digital numbers from processed AVHRR mosaic rather than original radiance values. Presents results in tabular and graphical forms classified as wind-induced, melt-induced or potential/uncertain BIAs. Identifies 120 000 km² of blue ice and a similar area that may be blue ice.
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651 #7 ‡a(*7) -- Antarctic regions.‡2udc
651 #7 ‡a(*73) -- Dronning Maud Land.‡2udc
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