High-resolution airborne observations of sea-ice pressure ridge sail height
ABSTRACT Pressure ridges impact the mass, energy and momentum budgets of the sea-ice cover and present an obstacle to transportation through ice-infested waters. Quantifying ridge characteristics is important for understanding total sea-ice mass and for improving the representation of sea-ice dynami...
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crcambridgeupr:10.1017/aog.2018.2 2024-09-15T17:35:21+00:00 High-resolution airborne observations of sea-ice pressure ridge sail height Duncan, K. Farrell, S. L. Connor, L. N. Richter-Menge, J. Hutchings, J. K. Dominguez, R. 2018 http://dx.doi.org/10.1017/aog.2018.2 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305518000022 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by-ncnd/4.0/ Annals of Glaciology volume 59, issue 76pt2, page 137-147 ISSN 0260-3055 1727-5644 journal-article 2018 crcambridgeupr https://doi.org/10.1017/aog.2018.2 2024-07-24T04:04:13Z ABSTRACT Pressure ridges impact the mass, energy and momentum budgets of the sea-ice cover and present an obstacle to transportation through ice-infested waters. Quantifying ridge characteristics is important for understanding total sea-ice mass and for improving the representation of sea-ice dynamics in high-resolution models. Multi-sensor measurements collected during annual Operation IceBridge (OIB) airborne surveys of the Arctic provide new opportunities to assess the sea ice at the end of winter. We present a new methodology to derive ridge sail height from high-resolution OIB Digital Mapping System (DMS) visible imagery. We assess the efficacy of the methodology by mapping the full sail height distribution along 12 pressure ridges in the western and central Arctic. Comparisons against coincident Airborne Topographic Mapper (ATM) elevation anomalies are used to demonstrate the methodology and evaluate DMS-derived sail heights. Sail heights and elevation anomalies were correlated at 0.81 or above. On average mean and maximum sail height agreed with ATM elevation to within 0.11 and 0.49 m, respectively. Of the ridges mapped, mean sail height ranged from 0.99 to 2.16 m, while maximum sail height ranged from 2.1 to 4.8 m. DMS also delivered higher sampling along ridge crests than coincident ATM data. Article in Journal/Newspaper Airborne Topographic Mapper Annals of Glaciology Sea ice Cambridge University Press Annals of Glaciology 59 76pt2 137 147 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
ABSTRACT Pressure ridges impact the mass, energy and momentum budgets of the sea-ice cover and present an obstacle to transportation through ice-infested waters. Quantifying ridge characteristics is important for understanding total sea-ice mass and for improving the representation of sea-ice dynamics in high-resolution models. Multi-sensor measurements collected during annual Operation IceBridge (OIB) airborne surveys of the Arctic provide new opportunities to assess the sea ice at the end of winter. We present a new methodology to derive ridge sail height from high-resolution OIB Digital Mapping System (DMS) visible imagery. We assess the efficacy of the methodology by mapping the full sail height distribution along 12 pressure ridges in the western and central Arctic. Comparisons against coincident Airborne Topographic Mapper (ATM) elevation anomalies are used to demonstrate the methodology and evaluate DMS-derived sail heights. Sail heights and elevation anomalies were correlated at 0.81 or above. On average mean and maximum sail height agreed with ATM elevation to within 0.11 and 0.49 m, respectively. Of the ridges mapped, mean sail height ranged from 0.99 to 2.16 m, while maximum sail height ranged from 2.1 to 4.8 m. DMS also delivered higher sampling along ridge crests than coincident ATM data. |
format |
Article in Journal/Newspaper |
author |
Duncan, K. Farrell, S. L. Connor, L. N. Richter-Menge, J. Hutchings, J. K. Dominguez, R. |
spellingShingle |
Duncan, K. Farrell, S. L. Connor, L. N. Richter-Menge, J. Hutchings, J. K. Dominguez, R. High-resolution airborne observations of sea-ice pressure ridge sail height |
author_facet |
Duncan, K. Farrell, S. L. Connor, L. N. Richter-Menge, J. Hutchings, J. K. Dominguez, R. |
author_sort |
Duncan, K. |
title |
High-resolution airborne observations of sea-ice pressure ridge sail height |
title_short |
High-resolution airborne observations of sea-ice pressure ridge sail height |
title_full |
High-resolution airborne observations of sea-ice pressure ridge sail height |
title_fullStr |
High-resolution airborne observations of sea-ice pressure ridge sail height |
title_full_unstemmed |
High-resolution airborne observations of sea-ice pressure ridge sail height |
title_sort |
high-resolution airborne observations of sea-ice pressure ridge sail height |
publisher |
Cambridge University Press (CUP) |
publishDate |
2018 |
url |
http://dx.doi.org/10.1017/aog.2018.2 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305518000022 |
genre |
Airborne Topographic Mapper Annals of Glaciology Sea ice |
genre_facet |
Airborne Topographic Mapper Annals of Glaciology Sea ice |
op_source |
Annals of Glaciology volume 59, issue 76pt2, page 137-147 ISSN 0260-3055 1727-5644 |
op_rights |
http://creativecommons.org/licenses/by-ncnd/4.0/ |
op_doi |
https://doi.org/10.1017/aog.2018.2 |
container_title |
Annals of Glaciology |
container_volume |
59 |
container_issue |
76pt2 |
container_start_page |
137 |
op_container_end_page |
147 |
_version_ |
1810453513682026496 |