The equation is presented in the pdf made public
3/10/11 at this 1 website. It is repeated here for convenience.
anom(Y) = calculated temperature anomaly in year Y
N(i) = average daily Brussels International sunspot number in year i
Y = number of years that have passed since 1700 (or any other year where the net summation is approximately zero such as 1856, 1902, 1910, 1938, or 1943)
T(i) = agt (average global temperature) of year i in °K,
ESST(c,Y) = ESST (Effective Sea Surface Temperature) in year Y calculated using an ESST range (magnitude) of c
CO2(Y) = ppmv CO2 in year Y
CO2start = ppmv CO2 in 1880
a, b, c, and d are coefficients to be determined.
Note that the energy gain from the sun is appropriately reduced by energy lost by radiation from the planet. The coefficient ‘b’ is the effective thermal capacitance. It relates the net energy in the numerator to a temperature anomaly.
The equation posits that average global temperature (agt) can be calculated from (1) the timeintegral of sunspot numbers (a proxy that correlates with energy retained by the planet), (2)predefined effective sea surface temperature (ESST) and (3) the measured atmospheric carbon dioxide (CO2) level. The influence of CO2 can be zeroed out by setting the coefficient ‘d’ to zero.