Syowa 00Z 200hPa temperature 1968 - - -47.2 -52.9 -57.7 -64.8 -70.9 -73.4 -73.1 -69.8 -52.1 -46.2 1969 -45.9 -47.6 -48.4 -52.8 -57.4 -68.3 -70.4 -70.7 -71.0 -70.3 -64.1 -52.2 1970 -45.2 -45.6 -47.2 -53.6 -58.5 -63.1 -71.6 -72.6 -71.3 -70.6 -58.5 -52.3 1971 -43.1 -44.1 -47.5 -51.8 -59.8 -63.8 -70.9 -69.4 -73.1 -67.5 -55.0 -49.6 1972 -45.9 -45.7 -47.8 -54.4 -61.5 -69.0 -70.9 -70.9 -72.0 -67.8 -57.4 -50.4 1973 -45.1 -45.5 -47.7 -53.1 -63.6 -67.3 -69.5 -72.8 -71.1 -69.4 -62.6 -46.7 1974 -46.5 -44.9 -48.8 -52.5 -59.9 -65.5 -69.5 -72.8 -70.9 -67.5 -60.0 -47.5 1975 -44.3 -43.8 -46.8 -52.5 -61.7 -67.2 -71.0 -70.7 -70.9 -67.5 -60.8 -49.5 1976 -45.6 -44.2 -48.6 -51.2 -59.1 -66.9 -70.9 -74.3 -71.0 -70.6 -60.0 -48.7 1977 -44.4 -45.8 -48.8 -54.6 -59.4 -65.1 -73.2 -72.8 -71.3 -66.2 -61.5 -47.6 1978 -43.8 -45.7 -47.5 -50.2 -60.0 -64.5 -70.6 -71.8 -71.7 -67.6 -60.6 -46.7 1979 -43.6 -45.3 -48.2 -53.3 -62.5 -65.9 -70.8 -72.4 -73.1 -66.3 -56.0 -46.7 1980 -43.4 -43.8 -49.0 -50.8 -57.0 -61.8 -70.2 -69.3 -70.9 -68.8 -62.1 -49.0 1981 -45.9 -45.3 -48.0 -54.7 -60.3 -66.1 -70.5 -71.0 -71.0 -66.4 -61.5 -48.5 1982 -47.0 -45.5 -47.8 -52.2 -62.5 -66.0 -70.6 -72.6 -72.5 -70.7 -58.2 -51.4 1983 -47.0 -46.1 -48.9 -54.6 -60.6 -67.7 -71.8 -72.1 -71.4 -69.8 -63.0 -48.6 1984 -46.8 -47.3 -48.5 -52.7 -60.9 -66.1 -71.2 -72.5 -71.9 -68.3 -62.5 -50.8 1985 -45.7 -46.8 -48.5 -51.3 -58.2 -69.4 -70.0 -71.3 -72.7 -71.0 -65.4 -54.5 1986 -47.7 -46.7 -49.3 -53.4 -59.9 -65.6 -68.3 -72.1 -72.8 -68.5 -65.2 -52.6 1987 -46.2 -48.3 -49.4 -53.6 -62.5 -68.0 -69.8 -75.3 -73.3 -69.8 -66.0 -57.3 1988 -46.2 -47.6 -51.8 -52.6 -61.1 -67.0 -71.0 -71.7 -69.7 -68.4 -55.6 -45.2 1989 -46.5 -44.9 -46.9 -53.6 -57.7 -66.6 -71.1 -73.8 -71.0 -69.9 -63.6 -50.3 1990 -46.3 -44.2 -47.4 -52.6 -60.4 -69.1 -70.3 -71.4 -72.3 -68.4 -59.8 -55.1 1991 -47.3 -49.1 -48.8 -52.5 -60.7 -65.3 -70.5 -72.3 -72.2 -64.6 -63.3 -48.7 1992 -48.3 -45.0 -49.9 -55.0 -61.1 -66.7 -69.3 -72.1 -72.6 -70.4 -63.0 -55.6 1993 -51.3 -46.6 -48.8 -53.8 -63.7 -69.3 -70.0 -73.7 -73.9 -70.3 -65.8 -56.1 1994 -48.6 -46.5 -50.3 -54.1 -59.0 -66.3 -71.8 -73.5 -72.8 -69.9 -64.2 -51.2 1995 -46.9 -47.1 -49.1 -53.2 -59.6 -67.1 -72.3 -70.2 -70.1 -71.1 -66.9 -57.6 1996 -48.4 -48.4 -47.5 -52.9 -59.7 -66.7 -71.4 -70.3 -71.8 -70.6 -65.1 -55.5 1997 -45.7 -45.5 -47.7 -52.0 -59.7 -68.6 -71.4 -72.9 -69.4 -71.6 -60.2 -52.3 1998 -47.5 -46.7 -49.9 -53.9 -63.4 -67.3 -70.9 -73.2 -73.5 -69.4 -67.0 -58.4 1999 -49.6 -48.0 -47.9 -53.8 -58.5 -68.0 -69.6 -72.8 -72.7 -70.1 -68.0 -64.8 2000 -48.1 -47.6 -48.8 -53.2 -59.1 -68.2 -71.3 -74.3 -73.1 -68.3 -62.6 -48.4 2001 -45.8 -45.7 -48.8 -52.1 -62.8 -67.9 -72.4 -72.7 -72.5 -72.4 -67.0 -57.5 2002 -46.7 -45.5 -49.2 -51.8 -59.2 -63.5 -71.4 -71.7 -70.1 -61.0 -56.2 -47.2 2003 -46.2 -45.4 -47.5 -52.9 -62.6 -65.3 -71.3 -72.1 -73.8 -71.2 -63.2 -54.4 2004 -47.4 -47.4 -49.5 -51.0 -59.2 -66.1 -70.5 -73.7 -70.3 -69.9 -64.5 -53.2 2005 -45.8 -45.0 -47.7 -53.5 -58.6 -69.1 -72.5 -73.2 -72.1 -67.4 -64.5 -51.1 2006 -46.6 -49.0 -48.5 -53.2 -61.6 -70.5 -69.4 -74.9 -74.1 -71.2 -69.2 -61.7 2007 -50.4 -46.7 -47.5 -53.5 -61.5 -65.7 -73.4 -72.1 -74.0 -71.4 -64.2 -54.2 2008 -48.2 -46.2 -47.6 -53.3 -58.3 -65.7 -70.6 -72.2 -73.0 -70.6 -64.6 -60.4 2009 -49.0 -45.2 -48.0 -52.5 -61.4 -66.2 -70.0 -71.6 -72.5 -70.3 -57.1 -54.5 2010 -47.2 -47.2 -48.5 -54.7 -61.0 -66.0 -72.5 -72.7 -71.6 -69.4 -66.2 -53.7 2011 -48.3 -45.2 -49.7 -53.6 -58.6 -68.1 -69.7 -70.9 -73.0 -68.6 -66.9 -57.2 2012 -50.2 -49.2 -47.8 -51.0 -61.3 -65.9 -71.1 -73.0 -71.7 -69.5 -55.6 -48.0 2013 -46.8 -45.7 -47.2 -52.5 -61.2 -66.7 -69.2 -72.4 -70.9 -67.0 -55.1 -46.8 2014 -47.1 -46.9 -48.7 -52.6 -58.8 -67.3 -72.0 -72.5 -72.3 -69.8 -64.0 -55.2 2015 -47.9 -46.0 -48.5 -52.1 -62.7 -67.4 -71.7 -73.0 -71.7 -70.7 -69.1 -60.0 2016 -50.9 -46.3 -49.8 -55.6 -63.2 -67.2 -71.6 -73.3 -71.3 -70.5 -61.2 -50.9 2017 -47.3 - -49.7 -54.3 -61.3 -67.4 -71.4 -72.9 -72.0 - - - 2018 - -45.3 -49.8 -52.7 -64.7 -67.5 -70.1 -73.0 -72.2 -70.3 - -47.8 2019 -48.8 - - -51.5 - -65.6 -72.2 -73.7 -68.1 -71.2 - - 2020 - -45.4 - -55.4 -63.7 -66.8 -72.2 -74.1 -71.7 -70.9 -67.6 - 2021 - -45.9 -49.0 -55.6 -61.5 -66.7 -70.8 -74.8 -73.5 -70.7 -68.4 -60.9 2022 -49.9 -47.3 -49.2 -53.5 -62.8 -69.0 - -73.4 - -71.5 -68.3 - 2023 - - -47.8 -54.9 -61.3 -67.1 -73.2 -71.8 - -70.3 -65.0 -56.3 2024 -49.2 -47.5 -49.4 -52.1 - - - - - - - -