Sea Ice and Snow Cover Extent

Sea ice extent provided by the National Snow and Ice Data Center (NSIDC) is available from 1979–2014 for the Northern Hemisphere, Southern Hemisphere, and Globe. Snow cover extent provided by the Rutgers University Global Snow Laboratory (GSL) is available from 1967–2014 for the North America + Greenland, Northern Hemisphere, Eurasia, and North America. All anomalies are relative to the 1981–2010 average.

Place mouse on axis and left-click to pan; wheel up/down for zoom in/out (or shift key+left-click).

Source: National Snow and Ice Data Center (NSIDC)

Download: xml csv json
Date Extent
million km²
Extent
million mi²
Anomaly
million km²
Anomaly
million mi²
Anomaly
% Difference
1979 23.95 9.25 -0.38 -0.14 -1.56
1980 24.87 9.60 0.54 0.21 2.22
1981 25.93 10.01 1.60 0.62 6.58
1982 23.73 9.16 -0.60 -0.23 -2.47
1983 24.82 9.58 0.49 0.19 2.01
1984 24.65 9.52 0.32 0.13 1.32
1985 25.58 9.88 1.25 0.49 5.14
1986 23.53 9.08 -0.80 -0.31 -3.29
1988 26.00 10.04 1.67 0.65 6.86
1989 24.17 9.33 -0.16 -0.06 -0.66
1990 23.93 9.24 -0.40 -0.15 -1.64
1991 23.97 9.25 -0.36 -0.14 -1.48
1992 24.68 9.53 0.35 0.14 1.44
1993 24.53 9.47 0.20 0.08 0.82
1994 24.21 9.35 -0.12 -0.04 -0.49
1995 24.33 9.39 0.00 0.00 0.00
1996 23.67 9.14 -0.66 -0.25 -2.71
1997 24.70 9.54 0.37 0.15 1.52
1998 24.64 9.51 0.31 0.12 1.27
1999 24.47 9.45 0.14 0.06 0.58
2000 23.63 9.12 -0.70 -0.27 -2.88
2001 23.80 9.19 -0.53 -0.20 -2.18
2002 24.38 9.41 0.05 0.02 0.21
2003 24.20 9.34 -0.13 -0.05 -0.53
2004 24.12 9.31 -0.21 -0.08 -0.86
2005 23.20 8.96 -1.13 -0.43 -4.64
2006 22.76 8.79 -1.57 -0.60 -6.45
2007 25.06 9.68 0.73 0.29 3.00
2008 24.80 9.58 0.47 0.19 1.93
2009 23.93 9.24 -0.40 -0.15 -1.64
2010 24.20 9.34 -0.13 -0.05 -0.53
2011 24.66 9.52 0.33 0.13 1.36
2012 23.57 9.10 -0.76 -0.29 -3.12
2013 25.01 9.66 0.68 0.27 2.79