Calibrating NCEP against SOC
¥The NCEP Climatology thus overestimates the Net Heat Loss for the North Atlantic Region due to overestimation of Latent and Sensible Heat Loss terms and underestimation of Shortwave Gain term.
¥This overestimation is leading to spurious results in the Low NAO Model simulation.
¥Functional regression is used resolve the overestimation in NCEP Climatology as follows:
¥Slope (m) and Intercept (y) are determined for each month using the SOC and NCEP climatologies for 1980-1993 (High NAO)
¥SOC(high NAO) = m*NCEP(high NAO) + y
¥m and y are used to adjust the NCEP Climatology for 1958-1971 (Low NAO)
¥Predicted NCEP (low NAO) = m*NCEP(low NAO) y, also
¥Predicted NCEP (high NAO) = [SOC(high NAO)-y] / m