| Summary: | The dataset of Daily Edge of Each Polynya in Antarctic (DEEP-AA) maps the area of each polynya daily. It uses a polynya tracking and identification method proposed by Lin et al., and effectively records the daily areas of both frequent and infrequent polynyas in wintertime (April to October). The DEEP-AA spans from 2003 to 2022 (2011.09.01-2012.07.31 missed). It should be noticed that ONLY the dataset of SIC60_6.25km_20d.zip is recommended, and the other ones used only in sensitive anaylsis were NOT parameter tuned. Be careful to use sets other than SIC60_6.25km_20d.zip. Contents in DEEP-AA DEEP-AA Subsets (*.zip) Daily maps (DEEP_*.nc) OverviewMap.mat Input.txt Subsets Multiple subsets (*.zip) under various parameter settings are provided here. Among them, SIC60_6.25km_20d.zip is recommended. Its spatial resolution is 6.25 km (polar stereographic grid, EPSG code 3412) and the temporal resolution is 1 day . This subset is built based on sea ice concentration data from the University of Bremen (https://doi.org/10.1594/PANGAEA.919778, and https://doi.org/10.1594/PANGAEA.898400), combined with ERA5 2m air temperature (https://doi.org/10.24381/cds.adbb2d47), Circum-Antarctic landfast sea ice extent, 2000-2018 - version 2.2 (https://doi.org/doi:10.26179/5d267d1ceb60c), and U.S. National Ice Center Arctic and Antarctic Sea Ice Concentration and Climatologies in Gridded Format, Version 1 (https://doi.org/10.7265/46cc-3952). The other subsets are the results of simple parameter modification (1 or 2 parameters) based on the setting of SIC60_6.25km_20d.zip. You can get detailed parameter settings in the Input.txt in every subset. Files of each subset Daily maps (DEEP_*.nc) DEEP-AA provides a NetCDF file daily containing a polynya map for that day. We give each polynya a 9-bit unique ID that does not change over time, and in the daily maps, the area of each polynya is masked by its ID . The last bit of the ID also represents the attributes of the polynya: the even number indicates coastal polynya, odd number indicates ...
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