Sea ice discussion page
Data used to produce the NASA Goddard Space Flight Center (GSFC) sea ice concentration images are provided by NSIDC. They are obtained from the Nimbus-7 SMMR and DMSP SSM/I Passive Microwave radiances at a resolution of 25 x 25 km. Anomalies are calculated from the 1979-2000 climatology. Citations for the data are:
Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996, updated 2006. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data, [latest available]. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media.
Meier, W., F. Fetterer, K. Knowles, M. Savoie, M. J. Brodzik. 2006, updated quarterly. Sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I passive microwave data, [all available]. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media.
SST data are the Reynolds SST analysis, otherwise known as the NOAA Optimum Interpolation Sea Surface Temperature Analysis, can be found at http://www.emc.ncep.noaa.gov/research/cmb/sst_analysis/.