Nansen_Ice_Sheet 06Z pressure 1987 - 987.4 986.3 - - - - - 989.9 979.2 978.4 985.1 1988 987.5 983.6 986.2 - - - - - - 990.3 980.8 982.3 1989 984.5 983.9 984.4 988.6 973.7 982.3 981.7 985.5 985.3 976.5 976.0 988.3 1990 987.9 980.8 985.7 995.0 999.3 989.9 997.7 982.8 973.9 982.0 983.3 983.9 1991 981.4 988.3 981.7 988.4 988.6 991.7 993.0 984.5 982.0 978.4 983.4 993.8 1992 987.8 994.8 987.4 987.1 992.6 996.4 985.2 985.9 977.9 980.7 977.7 982.7 1993 995.2 979.6 987.2 984.6 985.2 979.4 975.8 980.1 978.5 977.2 - 982.7 1994 985.1 983.1 979.9 987.9 987.5 1001.8 991.1 978.1 990.3 979.5 984.8 980.7 1995 980.9 982.5 991.8 984.8 982.6 992.1 1003.0 988.6 980.0 981.3 - 978.1 1996 986.3 990.5 - - - - 986.7 989.9 992.0 974.6 987.6 986.3 1997 988.5 989.7 980.9 988.0 977.3 990.0 982.5 979.8 983.3 979.2 988.3 990.9 1998 985.4 981.6 984.3 978.2 985.5 980.6 983.2 980.9 989.7 982.3 975.5 982.3 1999 983.9 987.8 986.5 982.8 981.9 1001.3 981.9 986.4 984.9 968.6 973.6 974.9 2000 978.3 983.4 985.6 985.5 983.9 - - - - - 982.1 995.1 2001 990.7 989.5 - 980.8 - 984.8 - 984.1 - 974.3 977.2 977.3 2002 983.4 979.3 991.4 983.4 994.0 995.0 990.7 981.6 988.5 990.8 - - 2003 - - - - - - - - - - - - 2004 - - - - - - - - - - - - 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - - - - - - - 2008 - - - - - - - - - - - - 2009 - - - - - - - - - - - -