Can we extend local sea-ice measurements to satellite scale? An example from the N-ICE2015 expedition
ABSTRACT Knowledge of Arctic sea-ice conditions is of great interest for Arctic residents, as well as for commercial usage, and to study the effects of climate change. Information gained from analysis of satellite data contributes to this understanding. In the course of using in situ data in combina...
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Online Access: | http://dx.doi.org/10.1017/aog.2017.37 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305517000374 |
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crcambridgeupr:10.1017/aog.2017.37 2024-06-09T07:38:31+00:00 Can we extend local sea-ice measurements to satellite scale? An example from the N-ICE2015 expedition Rösel, Anja King, Jennifer Doulgeris, Anthony P. Wagner, Penelope M. Johansson, A. Malin Gerland, Sebastian 2017 http://dx.doi.org/10.1017/aog.2017.37 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305517000374 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Annals of Glaciology volume 59, issue 76pt2, page 163-172 ISSN 0260-3055 1727-5644 journal-article 2017 crcambridgeupr https://doi.org/10.1017/aog.2017.37 2024-05-15T12:58:43Z ABSTRACT Knowledge of Arctic sea-ice conditions is of great interest for Arctic residents, as well as for commercial usage, and to study the effects of climate change. Information gained from analysis of satellite data contributes to this understanding. In the course of using in situ data in combination with remotely sensed data, the question of how representative local scale measurements are of a wider region may arise. We compare in situ total sea-ice thickness measurements from the Norwegian young sea ICE expedition in the area north of Svalbard with airborne-derived total sea-ice thickness from electromagnetic soundings. A segmented and classified synthetic aperture radar (SAR) quad-pol ALOS-2 Palsar-2 satellite scene was grouped into three simplified ice classes. The area fractions of the three classes are: 11.2% ‘thin’, 74.4% ‘level’, and 14.4% ‘deformed’. The area fractions of the simplified classes from ground- and helicopter-based measurements are comparable with those achieved from the SAR data. Thus, this study shows that there is potential for a stepwise upscaling from in situ, to airborne, to satellite data, which allow us to assess whether in situ data collected are representative of a wider region as observed by satellites. Article in Journal/Newspaper Annals of Glaciology Arctic Climate change Sea ice Svalbard Cambridge University Press Arctic Svalbard Annals of Glaciology 59 76pt2 163 172 |
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Open Polar |
collection |
Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
ABSTRACT Knowledge of Arctic sea-ice conditions is of great interest for Arctic residents, as well as for commercial usage, and to study the effects of climate change. Information gained from analysis of satellite data contributes to this understanding. In the course of using in situ data in combination with remotely sensed data, the question of how representative local scale measurements are of a wider region may arise. We compare in situ total sea-ice thickness measurements from the Norwegian young sea ICE expedition in the area north of Svalbard with airborne-derived total sea-ice thickness from electromagnetic soundings. A segmented and classified synthetic aperture radar (SAR) quad-pol ALOS-2 Palsar-2 satellite scene was grouped into three simplified ice classes. The area fractions of the three classes are: 11.2% ‘thin’, 74.4% ‘level’, and 14.4% ‘deformed’. The area fractions of the simplified classes from ground- and helicopter-based measurements are comparable with those achieved from the SAR data. Thus, this study shows that there is potential for a stepwise upscaling from in situ, to airborne, to satellite data, which allow us to assess whether in situ data collected are representative of a wider region as observed by satellites. |
format |
Article in Journal/Newspaper |
author |
Rösel, Anja King, Jennifer Doulgeris, Anthony P. Wagner, Penelope M. Johansson, A. Malin Gerland, Sebastian |
spellingShingle |
Rösel, Anja King, Jennifer Doulgeris, Anthony P. Wagner, Penelope M. Johansson, A. Malin Gerland, Sebastian Can we extend local sea-ice measurements to satellite scale? An example from the N-ICE2015 expedition |
author_facet |
Rösel, Anja King, Jennifer Doulgeris, Anthony P. Wagner, Penelope M. Johansson, A. Malin Gerland, Sebastian |
author_sort |
Rösel, Anja |
title |
Can we extend local sea-ice measurements to satellite scale? An example from the N-ICE2015 expedition |
title_short |
Can we extend local sea-ice measurements to satellite scale? An example from the N-ICE2015 expedition |
title_full |
Can we extend local sea-ice measurements to satellite scale? An example from the N-ICE2015 expedition |
title_fullStr |
Can we extend local sea-ice measurements to satellite scale? An example from the N-ICE2015 expedition |
title_full_unstemmed |
Can we extend local sea-ice measurements to satellite scale? An example from the N-ICE2015 expedition |
title_sort |
can we extend local sea-ice measurements to satellite scale? an example from the n-ice2015 expedition |
publisher |
Cambridge University Press (CUP) |
publishDate |
2017 |
url |
http://dx.doi.org/10.1017/aog.2017.37 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305517000374 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Annals of Glaciology Arctic Climate change Sea ice Svalbard |
genre_facet |
Annals of Glaciology Arctic Climate change Sea ice Svalbard |
op_source |
Annals of Glaciology volume 59, issue 76pt2, page 163-172 ISSN 0260-3055 1727-5644 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/aog.2017.37 |
container_title |
Annals of Glaciology |
container_volume |
59 |
container_issue |
76pt2 |
container_start_page |
163 |
op_container_end_page |
172 |
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1801373420428984320 |