An intercomparison of Arctic ice drift products to deduce uncertainty estimates
An intercomparison of four low-resolution remotely sensed ice-drift products in the Arctic Ocean is presented. The purpose of the study is to examine the uncertainty in space and time of these different drift products. The comparison is based on monthly mean ice drifts from October 2002 to December...
Published in: | Journal of Geophysical Research: Oceans |
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Online Access: | https://epic.awi.de/id/eprint/37373/ https://epic.awi.de/id/eprint/37373/1/Sumata_et_al-2014-Journal_of_Geophysical_Research__Oceans.pdf https://hdl.handle.net/10013/epic.45049 https://hdl.handle.net/10013/epic.45049.d001 |
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ftawi:oai:epic.awi.de:37373 2023-05-15T14:27:51+02:00 An intercomparison of Arctic ice drift products to deduce uncertainty estimates Sumata, Hiroshi Lavergne, Thomas Girard-Ardhuin, Fanny Kimura, Noriaki Tschudi, Mark A. Kauker, Frank Karcher, Michael Gerdes, Rüdiger 2014-08-08 application/pdf https://epic.awi.de/id/eprint/37373/ https://epic.awi.de/id/eprint/37373/1/Sumata_et_al-2014-Journal_of_Geophysical_Research__Oceans.pdf https://hdl.handle.net/10013/epic.45049 https://hdl.handle.net/10013/epic.45049.d001 unknown Wiley https://epic.awi.de/id/eprint/37373/1/Sumata_et_al-2014-Journal_of_Geophysical_Research__Oceans.pdf https://hdl.handle.net/10013/epic.45049.d001 Sumata, H. orcid:0000-0002-2832-2875 , Lavergne, T. , Girard-Ardhuin, F. , Kimura, N. , Tschudi, M. A. , Kauker, F. orcid:0000-0002-7976-3005 , Karcher, M. orcid:0000-0002-9587-811X and Gerdes, R. (2014) An intercomparison of Arctic ice drift products to deduce uncertainty estimates , Journal of Geophysical Research: Oceans, 119 (8), pp. 4887-4921 . doi:10.1002/2013JC009724 <https://doi.org/10.1002/2013JC009724> , hdl:10013/epic.45049 info:eu-repo/semantics/openAccess EPIC3Journal of Geophysical Research: Oceans, Wiley, 119(8), pp. 4887-4921, ISSN: 0148-0227 Article isiRev info:eu-repo/semantics/article 2014 ftawi https://doi.org/10.1002/2013JC009724 2021-12-24T15:40:14Z An intercomparison of four low-resolution remotely sensed ice-drift products in the Arctic Ocean is presented. The purpose of the study is to examine the uncertainty in space and time of these different drift products. The comparison is based on monthly mean ice drifts from October 2002 to December 2006. The ice drifts were also compared with available buoy data. The result shows that the differences of the drift vectors are not spatially uniform, but are covariant with ice concentration and thickness. In high (low) ice-concentration areas, the differences are small (large), and in thick (thin) ice-thickness areas, the differences are small (large). A comparison with the drift deduced from buoys reveals that the error of the drift speed depends on the magnitude of the drift speed: larger drift speeds have larger errors. Based on the intercomparison of the products and comparison with buoy data, uncertainties of the monthly mean drift are estimated. The estimated uncertainty maps reasonably reflect the difference between the products in relation to ice concentration and the bias from the buoy drift in relation to drift speed. Examinations of distinctive features of Arctic sea ice motion demonstrate that the transpolar drift speed differs among the products by 13% (0.32 cm s−1) on average, and ice drift curl in the Amerasian Basin differs by up to 24% (3.3 × 104 m2 s−1). These uncertainties should be taken into account if these products are used, particularly for model validation and data assimilation within the Arctic. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) Journal of Geophysical Research: Oceans 119 8 4887 4921 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
An intercomparison of four low-resolution remotely sensed ice-drift products in the Arctic Ocean is presented. The purpose of the study is to examine the uncertainty in space and time of these different drift products. The comparison is based on monthly mean ice drifts from October 2002 to December 2006. The ice drifts were also compared with available buoy data. The result shows that the differences of the drift vectors are not spatially uniform, but are covariant with ice concentration and thickness. In high (low) ice-concentration areas, the differences are small (large), and in thick (thin) ice-thickness areas, the differences are small (large). A comparison with the drift deduced from buoys reveals that the error of the drift speed depends on the magnitude of the drift speed: larger drift speeds have larger errors. Based on the intercomparison of the products and comparison with buoy data, uncertainties of the monthly mean drift are estimated. The estimated uncertainty maps reasonably reflect the difference between the products in relation to ice concentration and the bias from the buoy drift in relation to drift speed. Examinations of distinctive features of Arctic sea ice motion demonstrate that the transpolar drift speed differs among the products by 13% (0.32 cm s−1) on average, and ice drift curl in the Amerasian Basin differs by up to 24% (3.3 × 104 m2 s−1). These uncertainties should be taken into account if these products are used, particularly for model validation and data assimilation within the Arctic. |
format |
Article in Journal/Newspaper |
author |
Sumata, Hiroshi Lavergne, Thomas Girard-Ardhuin, Fanny Kimura, Noriaki Tschudi, Mark A. Kauker, Frank Karcher, Michael Gerdes, Rüdiger |
spellingShingle |
Sumata, Hiroshi Lavergne, Thomas Girard-Ardhuin, Fanny Kimura, Noriaki Tschudi, Mark A. Kauker, Frank Karcher, Michael Gerdes, Rüdiger An intercomparison of Arctic ice drift products to deduce uncertainty estimates |
author_facet |
Sumata, Hiroshi Lavergne, Thomas Girard-Ardhuin, Fanny Kimura, Noriaki Tschudi, Mark A. Kauker, Frank Karcher, Michael Gerdes, Rüdiger |
author_sort |
Sumata, Hiroshi |
title |
An intercomparison of Arctic ice drift products to deduce uncertainty estimates |
title_short |
An intercomparison of Arctic ice drift products to deduce uncertainty estimates |
title_full |
An intercomparison of Arctic ice drift products to deduce uncertainty estimates |
title_fullStr |
An intercomparison of Arctic ice drift products to deduce uncertainty estimates |
title_full_unstemmed |
An intercomparison of Arctic ice drift products to deduce uncertainty estimates |
title_sort |
intercomparison of arctic ice drift products to deduce uncertainty estimates |
publisher |
Wiley |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/37373/ https://epic.awi.de/id/eprint/37373/1/Sumata_et_al-2014-Journal_of_Geophysical_Research__Oceans.pdf https://hdl.handle.net/10013/epic.45049 https://hdl.handle.net/10013/epic.45049.d001 |
long_lat |
ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
geographic |
Arctic Arctic Ocean Curl |
geographic_facet |
Arctic Arctic Ocean Curl |
genre |
Arctic Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Sea ice |
op_source |
EPIC3Journal of Geophysical Research: Oceans, Wiley, 119(8), pp. 4887-4921, ISSN: 0148-0227 |
op_relation |
https://epic.awi.de/id/eprint/37373/1/Sumata_et_al-2014-Journal_of_Geophysical_Research__Oceans.pdf https://hdl.handle.net/10013/epic.45049.d001 Sumata, H. orcid:0000-0002-2832-2875 , Lavergne, T. , Girard-Ardhuin, F. , Kimura, N. , Tschudi, M. A. , Kauker, F. orcid:0000-0002-7976-3005 , Karcher, M. orcid:0000-0002-9587-811X and Gerdes, R. (2014) An intercomparison of Arctic ice drift products to deduce uncertainty estimates , Journal of Geophysical Research: Oceans, 119 (8), pp. 4887-4921 . doi:10.1002/2013JC009724 <https://doi.org/10.1002/2013JC009724> , hdl:10013/epic.45049 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2013JC009724 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
119 |
container_issue |
8 |
container_start_page |
4887 |
op_container_end_page |
4921 |
_version_ |
1766301884193177600 |