lead detection in arctic sea ice from cryosat-2: quality assessment, lead area fraction and width distribution
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ID: 230406
2015
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Abstract
Leads cover only a small fraction of the Arctic sea ice but
they have a dominant effect on the turbulent exchange
between the ocean and the atmosphere. A supervised
classification of CryoSat-2 measurements is performed by
a comparison with visual MODIS scenes. For several
parameters thresholds are optimized and tested in order to
reproduce this prior classification. The maximum power of
the waveform shows the best classification properties
amongst them, including the pulse peakiness. The sea surface height is derived and
its spread is clearly reduced for a classifier based on the maximum power compared to published ones.
Lead area fraction estimates based on
CryoSat-2 show a major fracturing event in the Beaufort Sea
in 2013. The resulting Arctic-wide lead width distribution
follows a power law with an exponent of 2.47 ± 0.04 for
the winter seasons from 2011 to 2014, confirming and
complementing a regional study based on a high-resolution
SPOT image.
| Reference Key |
wernecke2015thelead
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|---|---|
| Authors | ;A. Wernecke;L. Kaleschke |
| Journal | journal of applied polymer science |
| Year | 2015 |
| DOI |
10.5194/tc-9-1955-2015
|
| URL | |
| Keywords |
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