| Summary: | Progress Code: completed Statement: Quality of the underlying product described in detail in the associated dataset paper: Fraser, A. D., Massom, R. A., Ohshima, K. I., Willmes, S., Kappes, P. J., Cartwright, J., and Porter-Smith, R.: High-resolution mapping of circum-Antarctic landfast sea ice distribution, 2000–2018, Earth Syst. Sci. Data, 12, 2987–2999, https://doi.org/10.5194/essd-12-2987-2020, 2020. Purpose The purpose of releasing this processed/derived product is to facilitate wider distribution of this commonly-requested product. This product is also a candidate for Quantarctica Version 4, so a DOI will facilitate the incorporation of this dataset into that collection. This dataset provides the dataset underlying Figure 2 from the following publication: Fraser, A. D., Massom, R. A., Handcock, M. S., Reid, P., Ohshima, K. I., Raphael, M. N., Cartwright, J., Klekociuk, A. R., Wang, Z., and Porter-Smith, R.: Eighteen-year record of circum-Antarctic landfast-sea-ice distribution allows detailed baseline characterisation and reveals trends and variability, The Cryosphere, 15, 5061–5077, https://doi.org/10.5194/tc-15-5061-2021, 2021. It gives a map of the long-term (2000-2018) mean persistence of Antarctic landfast ice by simply averaging across the time dimension.
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