About these plots - Daily Southern Hemisphere (Antarctic) sea ice extent anomaly:
This plot is an anomaly from climatology 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 1979-2006. Blue banding represents the extent of daily historical values for the period 1979-2006.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.