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

Citation

Fraser, AD and Massom, RA and Ohshima, KI and Willmes, S and Kappes, PJ and Cartwright, J and Smith, RP, High-resolution mapping of circum-Antarctic landfast sea ice distribution, 2000-2018, Earth System Science Data, 12, (4) pp. 2987-2999. ISSN 1866-3508 (2020) [Refereed Article]


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Copyright Statement

Copyright the Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.

DOI: doi:10.5194/essd-12-2987-2020

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.

Item Details

Item Type:Refereed Article
Keywords:Antarctic fast ice, landfast sea ice
Research Division:Earth Sciences
Research Group:Physical geography and environmental geoscience
Research Field:Glaciology
Objective Division:Environmental Policy, Climate Change and Natural Hazards
Objective Group:Understanding climate change
Objective Field:Climate variability (excl. social impacts)
UTAS Author:Fraser, AD (Dr Alex Fraser)
UTAS Author:Massom, RA (Dr Robert Massom)
UTAS Author:Smith, RP (Dr Rick Smith)
ID Code:142747
Year Published:2020
Web of Science® Times Cited:7
Deposited By:Oceans and Cryosphere
Deposited On:2021-02-10
Last Modified:2021-04-26
Downloads:2 View Download Statistics

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