Gough 00Z 500hPa temperature 1969 - - - - - - - - - - - -17.1 1970 -14.7 -13.1 - -15.3 - - - - - -19.9 -16.2 -15.9 1971 -14.8 - -13.8 -18.8 -19.5 -21.0 - -22.0 - -21.8 -18.3 -15.3 1972 - -12.2 -14.0 - - - - - -18.3 - - - 1973 - -12.9 -13.1 -15.3 -18.6 - -22.4 - - -20.2 - - 1974 - -13.0 -14.0 -17.9 -22.2 -21.4 -24.6 -23.3 -20.7 -19.6 -18.8 -15.0 1975 - -12.2 -14.7 -16.8 -22.2 -22.8 -23.4 -21.3 -22.2 - -16.3 -13.4 1976 -15.1 -11.5 - - -17.6 -19.0 -20.2 -19.8 -20.6 -18.9 -16.3 -15.1 1977 -14.3 -13.8 -12.3 -17.3 -16.3 -19.7 -22.9 -23.4 -19.3 -21.0 -17.1 -16.1 1978 -13.0 -12.1 -14.2 -15.4 -18.0 -21.3 -20.4 -21.5 -20.2 -19.6 -16.8 -15.9 1979 -13.0 -13.0 -15.1 -15.4 -17.2 -21.6 -21.2 -20.4 -19.5 -21.4 -16.9 -16.7 1980 -13.4 -12.2 -14.2 -14.4 -20.2 -18.5 -21.7 -22.3 -19.5 -19.3 -15.4 -15.4 1981 -13.3 -12.4 -12.5 -17.4 -19.5 -19.8 -22.6 -20.7 -22.7 -19.3 -16.3 -13.6 1982 -14.3 -10.8 -12.9 -15.1 -21.0 -22.6 -19.3 -21.4 -20.9 -19.3 -16.4 -17.2 1983 -14.2 -12.8 -11.1 -16.6 -20.4 -20.1 -19.8 -22.3 -24.2 -18.0 -16.6 -17.1 1984 -15.3 -13.6 -12.7 -16.2 -19.7 -20.3 -21.8 -22.7 -23.1 -18.3 -17.8 -14.9 1985 -15.0 -14.9 -13.5 -15.8 -17.0 -21.4 -22.7 -21.8 -22.1 -21.0 -19.6 -14.9 1986 -13.5 -12.3 -13.4 -16.2 -19.6 -20.3 -22.2 -20.7 -21.7 -22.1 -15.3 -13.4 1987 -14.9 -13.6 -14.2 -16.1 -18.8 -18.9 -20.2 -22.4 -20.6 -20.3 -17.9 -15.3 1988 -13.4 -13.9 -16.2 -14.9 -21.3 -21.9 -21.2 -22.2 -23.6 -19.7 -16.0 -14.6 1989 -13.6 -13.0 -15.5 -15.0 -20.8 -20.4 -21.2 -22.2 -23.8 -21.2 -15.9 -14.1 1990 -14.4 -13.9 -14.4 -17.1 -18.7 -17.9 -22.2 -20.5 -20.2 -18.8 -17.9 -15.0 1991 -13.6 -13.6 -11.7 -17.0 -18.4 -21.4 -21.0 -20.5 -20.0 -20.5 -16.7 -17.4 1992 -14.2 -14.7 -14.1 -18.8 -17.5 -20.1 -23.7 -22.1 -20.4 -20.1 -18.5 -15.4 1993 -15.2 -14.7 -15.1 -16.9 -19.5 -20.6 -24.5 -22.1 -22.5 -20.3 -18.1 -13.8 1994 -12.5 -13.3 -14.9 -16.5 -19.1 -20.4 -19.5 -19.9 -21.9 -20.2 -18.9 -17.5 1995 -14.7 -14.9 -13.8 -16.3 -18.0 -19.9 -19.8 -25.3 -20.6 -19.0 -16.9 -15.4 1996 -12.8 -14.5 -14.6 -16.4 -19.9 -21.3 -22.8 -23.2 -22.6 -19.3 -18.0 -15.2 1997 -13.0 -13.3 -13.4 -15.5 -18.6 -21.6 -21.9 -20.5 -22.3 -21.2 -19.8 -16.4 1998 -13.2 -13.0 -13.2 -17.8 -22.0 -23.1 -19.3 -23.0 -20.4 -18.2 -17.6 -13.7 1999 -13.5 -12.1 -14.9 -17.6 -18.3 -22.7 -25.3 -22.7 -22.4 -20.2 -17.7 -15.6 2000 -13.9 -14.2 -16.4 -17.1 -17.7 -21.7 -20.9 -21.0 -24.4 -19.2 -18.1 -13.4 2001 -13.7 -12.5 -15.2 -15.7 -20.8 -21.5 -22.2 -20.9 -20.1 -19.8 -17.2 -14.8 2002 -14.4 - -16.2 -18.1 -19.0 -19.8 -21.5 -21.3 -21.3 -20.5 -16.7 -15.9 2003 -14.0 -13.8 -13.6 -18.1 -19.4 -20.7 -21.8 -20.7 -21.3 -19.6 -16.3 -15.0 2004 -13.8 -13.2 -14.1 -16.9 -19.0 -21.9 -19.2 -21.0 -19.9 -18.3 -17.7 -16.9 2005 -13.9 -12.1 -14.3 -16.0 -19.2 -20.2 -21.7 -22.0 -19.5 -20.8 -17.9 -12.9 2006 - -14.1 -13.5 -14.2 -17.0 -20.4 -23.9 -22.3 -20.3 -19.1 -16.6 -15.6 2007 -13.7 -12.1 -13.3 -16.6 -17.8 -23.4 -20.6 -23.1 -24.3 - - - 2008 -12.0 -13.5 -13.1 -16.5 -19.9 -23.0 -25.0 -21.6 -25.0 -19.9 -17.4 -15.3 2009 -13.8 -11.8 -14.6 -14.8 - - -18.5 -23.5 -20.4 -18.1 -18.3 -16.3 2010 -12.8 -11.8 -13.3 -15.7 - - - -23.7 -21.0 -19.5 -17.2 -14.4 2011 -12.8 -12.8 -15.0 -14.8 -18.5 -22.0 -20.1 -24.7 -21.7 -20.2 -17.0 -15.5 2012 -13.1 - - - - - - - - -17.6 -17.1 -16.5 2013 - - -13.7 -16.7 - - - - -20.1 -18.6 -18.2 -15.4 2014 -13.5 -12.8 -11.7 -15.6 -21.4 -20.9 -21.5 - -24.3 -18.8 -15.9 -14.2 2015 -12.9 -12.6 -14.0 -16.4 -20.7 -20.1 -18.9 - - -21.0 -16.8 -14.9 2016 -12.6 -13.0 -14.3 -16.5 - -23.9 -21.9 -23.1 -20.9 -20.1 -17.0 -15.5 2017 -13.7 -12.6 -12.7 -15.5 -18.6 -19.8 -22.0 -20.7 -20.3 -17.9 -17.5 -14.7 2018 -12.2 -12.5 -13.4 -17.5 -19.2 -21.7 -24.0 -19.9 -23.0 -20.2 -17.1 -16.2 2019 -12.6 -11.9 -13.5 -17.1 -20.1 -21.9 - - - - - - 2020 - - - - - - - - - -20.6 -17.7 -13.1 2021 -13.8 -11.6 -15.2 -17.6 -19.0 -22.0 -22.3 -23.4 -21.2 -21.6 -19.6 -13.6 2022 -14.0 -13.0 -13.5 - - - - - - -18.5 -16.7 - 2023 - - - - - - - - - -19.6 -17.9 -14.8 2024 -13.7 -13.7 -14.3 -14.3 - - - - - - - -