Figure 1 shows the average sea ice concentrations in the north polar region for March 1994. This is near the yearly maximum sea ice coverage, calculated from data from the Special Sensor Microwave Imager (SSM/I), an instrument on board the F11 satellite of the Defense Meteorological Satellite Program (DMSP).
Figure 2 depicts the average sea ice concentrations in the north polar region for September 1994. This is near the yearly minimum sea ice coverage, as calculated from data from the DMSP SSM/I.
