About these plots - Daily Southern Hemisphere (Antarctic) sea ice extent:
This plot is of daily total Southern Hemisphere sea ice extent for the most recent 12 month period. It is updated daily. Climatology is based on the period 1979-2008. Blue banding represents the extent of daily historical values for the period 1979-2008.Data are from the National Snow and Ice Data Center and are based on concentrations from Nimbus-7 SMMR and DMSP SSM/I Passive Microwave Data.