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- Title
High-resolution mapping of circum-Antarctic landfast sea ice distribution, 2000–2018.
- Authors
Fraser, Alexander D.; Massom, Robert A.; Ohshima, Kay I.; Willmes, Sascha; Kappes, Peter J.; Cartwright, Jessica; Porter-Smith, Richard
- 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 has wide applicability and is available at 10.26179/5d267d1ceb60c. The new algorithm presented here will enable continuous large-scale fast-ice mapping and monitoring into the future.
- Subjects
ANTARCTICA; SEA ice; CLIMATE sensitivity; ANTARCTIC ice; TIME series analysis; CLIMATE change; AREA studies
- Publication
Earth System Science Data, 2020, Vol 12, Issue 4, p2987
- ISSN
1866-3508
- Publication type
Article
- DOI
10.5194/essd-12-2987-2020