Ice Retreat Index Data file: oc_IRI.nc Dataset: Ice retreat Region: Mooring 2 INFO: Number of days with ice cover after March 15 in the vicinity of Mooring 2, 1980-2015. Missing Value: 1E+35 Variable: IRI = Ice retreat index, Days after Mar-15, Winter, 1980-2015. Year IRI 1980 10.00 1981 0.00 1982 36.00 1983 4.00 1984 8.00 1985 40.00 1986 26.00 1987 0.00 1988 32.00 1989 14.00 1990 14.00 1991 6.00 1992 32.00 1993 0.00 1994 22.00 1995 31.00 1996 0.00 1997 27.00 1998 0.00 1999 38.00 2000 0.00 2001 0.00 2002 0.00 2003 0.00 2004 9.00 2005 0.00 2006 13.00 2007 29.00 2008 39.00 2009 46.00 2010 38.00 2011 32.00 2012 47.00 2013 34.00 2014 0.00 2015 0.00