NSIDC DAAC Updates Passive Microwave Sea Ice Concentration Data Set

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce that the Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data has been updated through 31 December 2014. In addition, SSMIS Northern Hemisphere data beginning 01 January 2008 has been replaced with data that includes a reduced pole hole covering 0.029 million sq km which is ten times smaller than the previous pole hole. This new pole hole will continue to be applied to new data going forward.