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High-resolution mapping of circum-Antarctic landfast sea ice distribution, 2000–2018

High-resolution mapping of circum-Antarctic landfast sea ice distribution, 2000–2018
High-resolution mapping of circum-Antarctic landfast sea ice distribution, 2000–2018
Landfast sea ice (fast ice) is an important component of the Antarctic nearshore marine environment, where it strongly modulates ice sheet–ocean–atmosphere interactions and biological and biogeochemical processes, forms a key habitat, and affects logistical operations. Given the wide-ranging importance of Antarctic fast ice and its sensitivity to climate change, improved knowledge of its change and variability in its distribution is a high priority. Antarctic fast-ice mapping to date has been limited to regional studies and a time series covering East Antarctica from 2000 to 2008. Here, we present the first continuous, high-spatio-temporal resolution (1 km, 15 d) time series of circum-Antarctic fast-ice extent; this covers the period March 2000 to March 2018, with future updates planned. This dataset was derived by compositing cloud-free satellite visible and thermal infrared imagery using an existing methodology, modified to enhance automation and reduce subjectivity in defining the fast-ice edge. This new dataset (Fraser et al., 2020) has wide applicability and is available at https://doi.org/10.26179/5d267d1ceb60c. The new algorithm presented here will enable continuous large-scale fast-ice mapping and monitoring into the future.
1866-3516
2987-2999
Fraser, Alexander D.
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Massom, Robert A.
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Ohshima, Kay I.
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Willmes, Sascha
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Kappes, Peter J.
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Cartwright, Jessica
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Porter-smith, Richard
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Fraser, Alexander D.
7ebad5ea-5dd6-47c9-bd0b-b90706bda0a7
Massom, Robert A.
9a572fc2-a07b-46ee-a452-b5aa08ba56d8
Ohshima, Kay I.
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Willmes, Sascha
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Kappes, Peter J.
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Cartwright, Jessica
8a249815-a421-41ad-b13a-eb48c97ee95d
Porter-smith, Richard
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Fraser, Alexander D., Massom, Robert A., Ohshima, Kay I., Willmes, Sascha, Kappes, Peter J., Cartwright, Jessica and Porter-smith, Richard (2020) High-resolution mapping of circum-Antarctic landfast sea ice distribution, 2000–2018. Earth System Science Data, 12 (4), 2987-2999. (doi:10.5194/essd-12-2987-2020).

Record type: Article

Abstract

Landfast sea ice (fast ice) is an important component of the Antarctic nearshore marine environment, where it strongly modulates ice sheet–ocean–atmosphere interactions and biological and biogeochemical processes, forms a key habitat, and affects logistical operations. Given the wide-ranging importance of Antarctic fast ice and its sensitivity to climate change, improved knowledge of its change and variability in its distribution is a high priority. Antarctic fast-ice mapping to date has been limited to regional studies and a time series covering East Antarctica from 2000 to 2008. Here, we present the first continuous, high-spatio-temporal resolution (1 km, 15 d) time series of circum-Antarctic fast-ice extent; this covers the period March 2000 to March 2018, with future updates planned. This dataset was derived by compositing cloud-free satellite visible and thermal infrared imagery using an existing methodology, modified to enhance automation and reduce subjectivity in defining the fast-ice edge. This new dataset (Fraser et al., 2020) has wide applicability and is available at https://doi.org/10.26179/5d267d1ceb60c. The new algorithm presented here will enable continuous large-scale fast-ice mapping and monitoring into the future.

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Accepted/In Press date: 26 September 2020
Published date: 20 November 2020

Identifiers

Local EPrints ID: 445854
URI: http://eprints.soton.ac.uk/id/eprint/445854
ISSN: 1866-3516
PURE UUID: 695a3e4b-a0af-42ad-be1e-98b34703d57c

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Date deposited: 12 Jan 2021 17:31
Last modified: 25 Nov 2021 17:46

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Contributors

Author: Alexander D. Fraser
Author: Robert A. Massom
Author: Kay I. Ohshima
Author: Sascha Willmes
Author: Peter J. Kappes
Author: Jessica Cartwright
Author: Richard Porter-smith

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