As of 9 June 2023, bi-weekly updating of the Antarctic data in the U.S. National Ice Center Arctic and Antarctic Sea Ice Concentration and Climatologies in Gridded Format, Version 1 data set is suspended indefinitely. The U.S. NIC has suspended production of the Antarctic charts that are the input data for this data set. It is unknown if or when they will resume production of the Antarctic charts. The Arctic charts are still being produced and will continue to be used as input data for this data set.
Antarctic data prior to 9 June 2023 and documentation are still available from the data set web page at NSIDC: https://nsidc.org/data/G10033
Data set DOI: https://doi.org/10.7265/46cc-3952