High-resolution sea ice drift and deformation from sequential SAR images in the Transpolar Drift during MOSAiC 2019/2020
Sea ice deformation is a crucial process in the polar climate system and, thus, it is an important cross-cutting theme for all disciplines of the interdisciplinary research expedition MOSAiC. Because sea ice deformation is highly localized and intermittent, drift and deformation with a high spatial...
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Language: | English |
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PANGAEA
2023
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.958449 https://doi.org/10.1594/PANGAEA.958449 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.958449 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
DATE/TIME MOSAiC MOSAiC_Arctic_ice_drift_deformation Multidisciplinary drifting Observatory for the Study of Arctic Climate netCDF file netCDF file (File Size) Satellite imagery SATI |
spellingShingle |
DATE/TIME MOSAiC MOSAiC_Arctic_ice_drift_deformation Multidisciplinary drifting Observatory for the Study of Arctic Climate netCDF file netCDF file (File Size) Satellite imagery SATI von Albedyll, Luisa Hutter, Nils High-resolution sea ice drift and deformation from sequential SAR images in the Transpolar Drift during MOSAiC 2019/2020 |
topic_facet |
DATE/TIME MOSAiC MOSAiC_Arctic_ice_drift_deformation Multidisciplinary drifting Observatory for the Study of Arctic Climate netCDF file netCDF file (File Size) Satellite imagery SATI |
description |
Sea ice deformation is a crucial process in the polar climate system and, thus, it is an important cross-cutting theme for all disciplines of the interdisciplinary research expedition MOSAiC. Because sea ice deformation is highly localized and intermittent, drift and deformation with a high spatial and temporal resolution and a large spatial coverage are required for a comprehensive description of the sea ice dynamics. We provide a regularly gridded, high-resolution drift and deformation dataset that can be used for several potential applications. Drift fields were obtained from Sentinel-1, HH polarization SAR images acquired in enhanced wide mode. These had a pixel resolution of 50 m in Polar Stereographic North projection (latitude of true scale: 70 N, center longitude: 45 W). We used an ice-tracking algorithm introduced by Thomas et al. (2008, 2011) and modified by Hollands and Dierking (2011) to derive drift from sequential pairs. Typically, the time between two scenes was one day, with a few exceptions of 2-3 days, and the size of the scenes was on average 200 x 200 km. Images are available for the entire study period, except for the time between 14 January and 15 March 2020, when the ship was north of the latitudinal coverage of the satellite. The resulting drift data set was defined on a regular grid with a spatial resolution of 700 m. Next, we calculate the spatial derivatives from the regularly spaced drift field following von Albedyll et al. (2021). Divergence, convergence, shear, and total deformation are then derived from the spatial derivatives of the velocity field. To reduce noise in the divergence fields, we filter the drift data with a directional filter that detects the direction with the smallest variation at each pixel and smooths along, but not across this orientation, with a 1-d kernel. The direction is chosen to minimize the standard deviation in a neighborhood of 7 pixels. This way, noise is reduced while preserving the strong gradients in the velocity field that are indicative of ... |
format |
Dataset |
author |
von Albedyll, Luisa Hutter, Nils |
author_facet |
von Albedyll, Luisa Hutter, Nils |
author_sort |
von Albedyll, Luisa |
title |
High-resolution sea ice drift and deformation from sequential SAR images in the Transpolar Drift during MOSAiC 2019/2020 |
title_short |
High-resolution sea ice drift and deformation from sequential SAR images in the Transpolar Drift during MOSAiC 2019/2020 |
title_full |
High-resolution sea ice drift and deformation from sequential SAR images in the Transpolar Drift during MOSAiC 2019/2020 |
title_fullStr |
High-resolution sea ice drift and deformation from sequential SAR images in the Transpolar Drift during MOSAiC 2019/2020 |
title_full_unstemmed |
High-resolution sea ice drift and deformation from sequential SAR images in the Transpolar Drift during MOSAiC 2019/2020 |
title_sort |
high-resolution sea ice drift and deformation from sequential sar images in the transpolar drift during mosaic 2019/2020 |
publisher |
PANGAEA |
publishDate |
2023 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.958449 https://doi.org/10.1594/PANGAEA.958449 |
op_coverage |
MEDIAN LATITUDE: 83.245347 * MEDIAN LONGITUDE: 67.058698 * SOUTH-BOUND LATITUDE: 81.397400 * WEST-BOUND LONGITUDE: 0.294800 * NORTH-BOUND LATITUDE: 85.093294 * EAST-BOUND LONGITUDE: 133.822596 * DATE/TIME START: 2019-10-05T05:46:00 * DATE/TIME END: 2020-07-14T07:19:00 |
long_lat |
ENVELOPE(0.294800,133.822596,85.093294,81.397400) |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Annals of Glaciology Arctic Arctic Sea ice The Cryosphere |
genre_facet |
Annals of Glaciology Arctic Arctic Sea ice The Cryosphere |
op_relation |
Ringeisen, Damien; Hutter, Nils; von Albedyll, Luisa (2023): Deformation lines in Arctic sea ice: intersection angle distribution and mechanical properties. The Cryosphere, 17(9), 4047-4061, https://doi.org/10.5194/tc-17-4047-2023 Hollands, Thomas; Dierking, Wolfgang (2011): Performance of a multiscale correlation algorithm for the estimation of sea-ice drift from SAR images: initial results. Annals of Glaciology, 52(57), 311-317, https://doi.org/10.3189/172756411795931462 Thomas, Mani; Geiger, Cathleen A; Kambhamettu, Chandra (2008): High resolution (400 m) motion characterization of sea ice using ERS-1 SAR imagery. Cold Regions Science and Technology, 52(2), 207-223, https://doi.org/10.1016/j.coldregions.2007.06.006 Thomas, Mani; Kambhamettu, Chandra; Geiger, Cathleen A (2011): Motion Tracking of Discontinuous Sea Ice. IEEE Transactions on Geoscience and Remote Sensing, 49(12), 5064-5079, https://doi.org/10.1109/TGRS.2011.2158005 von Albedyll, Luisa; Haas, Christian; Dierking, Wolfgang (2021): Linking sea ice deformation to ice thickness redistribution using high-resolution satellite and airborne observations. The Cryosphere, 15(5), 2167-2186, https://doi.org/10.5194/tc-15-2167-2021 https://doi.pangaea.de/10.1594/PANGAEA.958449 https://doi.org/10.1594/PANGAEA.958449 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.95844910.5194/tc-17-4047-202310.3189/17275641179593146210.1016/j.coldregions.2007.06.00610.1109/TGRS.2011.215800510.5194/tc-15-2167-2021 |
_version_ |
1812810998573170688 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.958449 2024-10-13T14:01:28+00:00 High-resolution sea ice drift and deformation from sequential SAR images in the Transpolar Drift during MOSAiC 2019/2020 von Albedyll, Luisa Hutter, Nils MEDIAN LATITUDE: 83.245347 * MEDIAN LONGITUDE: 67.058698 * SOUTH-BOUND LATITUDE: 81.397400 * WEST-BOUND LONGITUDE: 0.294800 * NORTH-BOUND LATITUDE: 85.093294 * EAST-BOUND LONGITUDE: 133.822596 * DATE/TIME START: 2019-10-05T05:46:00 * DATE/TIME END: 2020-07-14T07:19:00 2023 text/tab-separated-values, 206 data points https://doi.pangaea.de/10.1594/PANGAEA.958449 https://doi.org/10.1594/PANGAEA.958449 en eng PANGAEA Ringeisen, Damien; Hutter, Nils; von Albedyll, Luisa (2023): Deformation lines in Arctic sea ice: intersection angle distribution and mechanical properties. The Cryosphere, 17(9), 4047-4061, https://doi.org/10.5194/tc-17-4047-2023 Hollands, Thomas; Dierking, Wolfgang (2011): Performance of a multiscale correlation algorithm for the estimation of sea-ice drift from SAR images: initial results. Annals of Glaciology, 52(57), 311-317, https://doi.org/10.3189/172756411795931462 Thomas, Mani; Geiger, Cathleen A; Kambhamettu, Chandra (2008): High resolution (400 m) motion characterization of sea ice using ERS-1 SAR imagery. Cold Regions Science and Technology, 52(2), 207-223, https://doi.org/10.1016/j.coldregions.2007.06.006 Thomas, Mani; Kambhamettu, Chandra; Geiger, Cathleen A (2011): Motion Tracking of Discontinuous Sea Ice. IEEE Transactions on Geoscience and Remote Sensing, 49(12), 5064-5079, https://doi.org/10.1109/TGRS.2011.2158005 von Albedyll, Luisa; Haas, Christian; Dierking, Wolfgang (2021): Linking sea ice deformation to ice thickness redistribution using high-resolution satellite and airborne observations. The Cryosphere, 15(5), 2167-2186, https://doi.org/10.5194/tc-15-2167-2021 https://doi.pangaea.de/10.1594/PANGAEA.958449 https://doi.org/10.1594/PANGAEA.958449 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess DATE/TIME MOSAiC MOSAiC_Arctic_ice_drift_deformation Multidisciplinary drifting Observatory for the Study of Arctic Climate netCDF file netCDF file (File Size) Satellite imagery SATI dataset 2023 ftpangaea https://doi.org/10.1594/PANGAEA.95844910.5194/tc-17-4047-202310.3189/17275641179593146210.1016/j.coldregions.2007.06.00610.1109/TGRS.2011.215800510.5194/tc-15-2167-2021 2024-10-02T00:42:44Z Sea ice deformation is a crucial process in the polar climate system and, thus, it is an important cross-cutting theme for all disciplines of the interdisciplinary research expedition MOSAiC. Because sea ice deformation is highly localized and intermittent, drift and deformation with a high spatial and temporal resolution and a large spatial coverage are required for a comprehensive description of the sea ice dynamics. We provide a regularly gridded, high-resolution drift and deformation dataset that can be used for several potential applications. Drift fields were obtained from Sentinel-1, HH polarization SAR images acquired in enhanced wide mode. These had a pixel resolution of 50 m in Polar Stereographic North projection (latitude of true scale: 70 N, center longitude: 45 W). We used an ice-tracking algorithm introduced by Thomas et al. (2008, 2011) and modified by Hollands and Dierking (2011) to derive drift from sequential pairs. Typically, the time between two scenes was one day, with a few exceptions of 2-3 days, and the size of the scenes was on average 200 x 200 km. Images are available for the entire study period, except for the time between 14 January and 15 March 2020, when the ship was north of the latitudinal coverage of the satellite. The resulting drift data set was defined on a regular grid with a spatial resolution of 700 m. Next, we calculate the spatial derivatives from the regularly spaced drift field following von Albedyll et al. (2021). Divergence, convergence, shear, and total deformation are then derived from the spatial derivatives of the velocity field. To reduce noise in the divergence fields, we filter the drift data with a directional filter that detects the direction with the smallest variation at each pixel and smooths along, but not across this orientation, with a 1-d kernel. The direction is chosen to minimize the standard deviation in a neighborhood of 7 pixels. This way, noise is reduced while preserving the strong gradients in the velocity field that are indicative of ... Dataset Annals of Glaciology Arctic Arctic Sea ice The Cryosphere PANGAEA - Data Publisher for Earth & Environmental Science Arctic ENVELOPE(0.294800,133.822596,85.093294,81.397400) |