| Summary: | Monthly climatologies of astatistical indicator of sea ice variabilitycomputed from daily maps of sea ice concentration (SIC) from satellites (Vichi, 2022).The sigma_SIAindicator is based on the standard deviation of SIC daily anomalies computed over the monthly time scales, using a monthly climatology as the baseline. The following files have been derived from NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 4 ( https://doi.org/10.7265/efmz-2t65 and used in Vichi (2022). The code to produce them is available at the following repository https://github.com/mvichi/antarcticMIZ ( DOI:10.25375/uct.21103363 ) NSIDC_cdr_clim_m_sigmaSIA.nc: Climatological monthly sigma_SIA (climatological 'pooled' monthly std of daily anomaly) from NOAA/NSIDC CDR Southern Hemisphere Sea Ice Concentration NSIDC_cdr_clim_m_maskMIZ.nc: Climatological mask of the MIZ extent using a sigma_SIA>0.1criterion NSIDC_cdr_clim_m_sigmaSIA_exceedance.nc: Climatological probability maps of exceeding sigma_SIA>0.1and sigma_SIA>0.2 TheseNetCDF files contain12 monthly arrays with the climatological sigma_SIA computed over the period 1989-2019. Please note that the indicator in this file is in % of SIC, while in the original paper it is presented in fractional units. Reference Vichi, M.: An indicator of sea ice variability for the Antarctic marginal ice zone, The Cryosphere, 16, 4087–4106, https://doi.org/10.5194/tc-16-4087-2022 , 2022. This project has received funding from the National Research Foundation through the South African National Antarctic Program and from the Whales&Climate Program (https://whalesandclimate.org)
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