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solarconstant_noaa_an.txt
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1850 2019 1861 2008 .00 AS BASE VALUE YEARLY TSI (W/M2) IN TIM SCALE
2019 1360.4600
2018 1360.5000
2017 1360.5900
2016 1360.7100
2015 1360.8800
2014 1361.0500
2013 1361.1300
2012 1361.0500
2011 1360.8000
2010 1360.4800
2009 1360.3100
2008 1360.2900
2007 1360.3000
2006 1360.4500
2005 1360.5500
2004 1360.8100
2003 1361.0200
2002 1361.5200
2001 1361.5800
2000 1361.7800
1999 1361.6400
1998 1361.3400
1997 1360.8800
1996 1360.6800
1995 1360.8400
1994 1360.9100
1993 1361.0800
1992 1361.4900
1991 1361.6200
1990 1361.5300
1989 1361.2100
1988 1360.6300
1987 1360.3000
1986 1360.2100
1985 1360.2200
1984 1360.3900
1983 1360.7200
1982 1360.8800
1981 1361.1300
1980 1361.5200
1979 1362.2500
1978 1361.1500
1977 1360.6100
1976 1360.4800
1975 1360.5100
1974 1360.6700
1973 1360.7000
1972 1360.9600
1971 1360.9400
1970 1361.2600
1969 1361.2600
1968 1361.2700
1967 1361.1600
1966 1360.7700
1965 1360.5000
1964 1360.4600
1963 1360.6100
1962 1360.6900
1961 1360.8300
1960 1361.3200
1959 1361.7100
1958 1361.9200
1957 1361.9700
1956 1361.5700
1955 1360.7000
1954 1360.4200
1953 1360.4900
1952 1360.6400
1951 1360.9600
1950 1361.0800
1949 1361.5100
1948 1361.5200
1947 1361.6500
1946 1361.1500
1945 1360.6600
1944 1360.4600
1943 1360.5200
1942 1360.6300
1941 1360.7800
1940 1360.9500
1939 1361.1200
1938 1361.3000
1937 1361.3400
1936 1361.0500
1935 1360.6800
1934 1360.4500
1933 1360.4300
1932 1360.4700
1931 1360.5600
1930 1360.6800
1929 1360.9200
1928 1361.0300
1927 1360.9600
1926 1360.9100
1925 1360.7500
1924 1360.5200
1923 1360.4300
1922 1360.5000
1921 1360.6000
1920 1360.6900
1919 1360.9100
1918 1361.0500
1917 1361.2500
1916 1360.8600
1915 1360.7800
1914 1360.4600
1913 1360.3900
1912 1360.4100
1911 1360.4300
1910 1360.5300
1909 1360.7500
1908 1360.7900
1907 1360.9000
1906 1360.8300
1905 1360.9100
1904 1360.7300
1903 1360.5800
1902 1360.4200
1901 1360.4000
1900 1360.4600
1899 1360.4800
1898 1360.6000
1897 1360.6000
1896 1360.7300
1895 1360.9100
1894 1361.0300
1893 1361.0900
1892 1360.9900
1891 1360.6800
1890 1360.4400
1889 1360.4300
1888 1360.4400
1887 1360.4900
1886 1360.5900
1885 1360.8100
1884 1360.9100
1883 1360.9100
1882 1360.8800
1881 1360.8300
1880 1360.6500
1879 1360.4300
1878 1360.4100
1877 1360.4800
1876 1360.4700
1875 1360.5200
1874 1360.7500
1873 1360.9300
1872 1361.2300
1871 1361.3100
1870 1361.5400
1869 1361.0000
1868 1360.6900
1867 1360.4400
1866 1360.5100
1865 1360.6300
1864 1360.7700
1863 1360.7500
1862 1360.8700
1861 1361.0300
1860 1361.1800
1859 1361.1600
1858 1360.8400
1857 1360.5700
1856 1360.4100
1855 1360.4300
1854 1360.5500
1853 1360.7100
1852 1360.8300
1851 1360.9200
1850 1360.9400
*******************************************************************
Data arrangement:
1st line: yr_start, yr_end, yr_cyc1, yr_cyc2, base_value (4i5,f8.2):
yr_start, yr_end : starting and ending year of the table
yr_cyc1, yr_cyc2 : marks for 1st and last cycles used for data beyond table range
base_value : base value to be added
2nd line and so on: year, solcon in w/m2 (i4,f10.4)
Total Solar Irradiance (W/m*m) in TIM scale (annual mean). The original
table (minus 1360) was derived by Van den Dool (2011, Reconstruction of
the solar constant back to 1750) as described below.
"The above Table 1 shows S for 1850 through 2019 for use at NCEP. Add 1360 to
the numbers shown to obtain S in W/(m*m). Each row represents the year on the
left plus 0, 1, ..9. For 1979-2010 the values in this Table are as observed. For
1850-1978 the value is based on a regression between sunspots and the TSI data,
the regression (0.81 correlation) being based on 1979-2010 data. The same for
2011-2019, where I use the NCEP-SWPC prediction of sunspots for the currently
unfolding solar cycle. After all is said and done S varies by no more than 2 W/m2.
Nore that the variance is higher during 1979-2010 than in other parts of the
time series."
.