Long-term analysis of sea ice drift in the western Ross sea, Antarctica, at high and low spatial resolution

Simple item page
dc.contributor.authorFarooq U
dc.contributor.authorRack W
dc.contributor.authorMcDonald A
dc.contributor.authorHowell S
dc.date.accessioned2021-01-15T01:51:23Z
dc.date.available2021-01-15T01:51:23Z
dc.date.issued2020en
dc.date.updated2020-11-08T07:17:58Z
dc.description.abstract© 2020 by the authors. The Ross Sea region, including three main polynya areas in McMurdo Sound, Terra Nova Bay, and in front of the Ross Ice Shelf, has experienced a significant increase in sea ice extent in the first four decades of satellite observations. Here, we use Co-Registration of Optically Sensed Images and Correlation (COSI-Corr) to estimate 894 high-resolution sea ice motion fields of the Western Ross Sea in order to explore ice-atmosphere interactions based on sequential high-resolution Advanced Synthetic Aperture Radar (ASAR) images from the Envisat satellite acquired between 2002-2012. Validation of output motion vectors with manually drawn vectors for 24 image pairs show Pearson correlation coefficients of 0.92 ± 0.09 with a mean deviation in direction of-3.17 ± 6.48 degrees. The high-resolution vectors were also validated against the Environment and Climate Change Canada sea ice motion tracking algorithm, resulting in correlation coefficients of 0.84 ± 0.20 and the mean deviation in the direction of-0.04 ± 17.39 degrees. A total of 480 one-day separated velocity vector fields have been compared to an available NSIDC low-resolution sea ice motion vector product, showing much lower correlations and high directional differences. The high-resolution product is able to better identify short-term and spatial variations, whereas the low-resolution product underestimates the actual sea ice velocities by 47% in this important near-coastal region. The large-scale pattern of sea ice drift over the full time period is similar in both products. Improved image coverage is still desired to capture drift variations shorter than 24 h.en
dc.identifier.citationFarooq U, Rack W, McDonald A, Howell S (2020). Long-term analysis of sea ice drift in the western Ross sea, Antarctica, at high and low spatial resolution. Remote Sensing. 12(9). 1402-1402.en
dc.identifier.doihttp://doi.org/10.3390/RS12091402
dc.identifier.issn2072-4292
dc.identifier.urihttps://hdl.handle.net/10092/101462
dc.languageen
dc.language.isoen
dc.publisherMDPI AGen
dc.rightsAll rights reserved unless otherwise stateden
dc.rights.urihttp://hdl.handle.net/10092/17651en
dc.subjectsea iceen
dc.subjectmotion trackingen
dc.subjectEnvisat ASARen
dc.subjectPolar Pathfinderen
dc.subjectNSIDCen
dc.subjectWestern Ross Seaen
dc.subjectSynthetic Aperture Radaren
dc.subjectCOSI-Corren
dc.subject.anzsrc0203 Classical Physicsen
dc.subject.anzsrc0406 Physical Geography and Environmental Geoscienceen
dc.subject.anzsrc0909 Geomatic Engineeringen
dc.subject.anzsrcFields of Research::37 - Earth sciences::3709 - Physical geography and environmental geoscience::370901 - Geomorphology and earth surface processesen
dc.subject.anzsrcFields of Research::40 - Engineering::4013 - Geomatic engineering::401304 - Photogrammetry and remote sensingen
dc.titleLong-term analysis of sea ice drift in the western Ross sea, Antarctica, at high and low spatial resolutionen
dc.typeJournal Articleen
uc.collegeFaculty of Science
uc.departmentSchool of Earth and Environment
uc.departmentSchool of Physical & Chemical Sciences
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Farooq_etal_2020_Long-term-analysis-sea-ice-drift-WRS-High-Low-Spatial-Resolution.pdf
Size:
3.06 MB
Format:
Adobe Portable Document Format
Description:
Published version
Download
Collections
Science: Journal Articles