NOAA 14 AVHRR Day and Night SST Equations 3/20/95

MCSST=linear multi-channel Sea Surface Temperature algorithm.
NLSST=Non-linear Sea Surface Temperature algorithm (SST). 
All equations based on March 1995 global drifting buoy and
tropical Pacific fixed buoy matchups.
T3.7, T11 and T12 =AVHRR channels 3, 4 and 5 brightness
temperatures (Deg. K). SEC0=secent of satellite zenith angle.
Tsfc is an apriori estimate of surface temperature (Deg.
Celsius). Preferably, It should be based on a satellite only or
blended or climatological based field analysis but may be derived
from the actual satellite measurements using one of the MCSST
equations. In operational use, Tsfc is limited to the range
between 28 and -2 Deg. Celsius. NOAA 14 replaces NOAA 12 for
operational processing of SST on March 20,1995. The new day and
night operational equations are denoted by asterix.
  
Example of use:
Night NLSST Split SST = 0.0781*Tsfc*(T11-T12) + 0.9331*T11        
        +0.7381*(T11-T12)*(SEC0-1) -253.43 (Deg. Celsius).


             Regression Output:Night NLSST Split
    Constant                   -253.428
    Std Err of Y Est           0.480436
    R Squared                  0.993766
    No. of Observations            1055
    Degrees of Freedom             1051
                      Tsfc*(T11-T12)  T11      (T11-T12)*(SEC0-1)
    X Coefficient(s)  0.078095      0.933109   0.738128
    Std Err of Coef.  0.001017      0.004392   0.03915
    
    
             Regression Output:Night MCSST Split
    Constant                    -282.24
    Std Err of Y Est           0.535959
    R Squared                  0.992242
    No. of Observations            1055
    Degrees of Freedom             1051
                      (T11-T12)    T11         (T11-T12)*(SEC0-1)
    X Coefficient(s)  2.275385     1.029088     0.752567
    Std Err of Coef.  0.033812     0.004022     0.043759
    
    
             Regression Output: *** Night NLSST Triple  ***
    Constant                   -266.186
    Std Err of Y Est           0.427116
    R Squared                  0.995073
    No. of Observations            1055
    Degrees of Freedom             1051
                      Tsfc*(T3.7-T12)  T11         SEC0-1
    X Coefficient(s)  0.031889       0.980064      1.817861
    Std Err of Coef.  0.000316       0.003461      0.069577
    
             Regression Output:Night MCSST Triple
    Constant                   -275.364
    Std Err of Y Est            0.41102
    R Squared                  0.995438
    No. of Observations            1055
    Degrees of Freedom             1051
                      T3.7-T12    T11         SEC0-1
    X Coefficient(s)  0.920822    1.010037    1.760411
    Std Err of Coef.  0.008757    0.003153    0.067026
    
        
             Regression Output:Night NLSST Dual
    Constant                   -276.813
    Std Err of Y Est           0.461235
    R Squared                  0.994255
    No. of Observations            1055
    Degrees of Freedom             1051
                      Tsfc*(T3.7-T11)   T11     SEC0-1
    X Coefficient(s)  0.050086      1.019182    2.039266
    Std Err of Coef.  0.000541      0.003496    0.074861
    
    
             Regression Output:Night MCSST dual
    Constant                   -273.914
    Std Err of Y Est           0.432718
    R Squared                  0.994943
    No. of Observations            1055
    Degrees of Freedom             1051
                      (T3.7-T11)    T11       SEC0-1
    X Coefficient(s)  1.409936    1.008751    1.975581
    Std Err of Coef.   0.01419    0.003332    0.070296
    
    
             Regression Output:*** Day  NLSST Split   ***
    Constant                   -255.165
    Std Err of Y Est           0.507031
    R Squared                  0.994647
    No. of Observations             865
    Degrees of Freedom              861
                      Tsfc*(T11-T12) T11       (T11-T12)*(SEC0-1)
    X Coefficient(s)  0.076066     0.939813     0.801458
    Std Err of Coef.   0.00148     0.004885     0.048744
    
    
             Regression Output:Day MCSST Split
    Constant                    -278.43
    Std Err of Y Est           0.570485
    R Squared                  0.993223
    No. of Observations             865
    Degrees of Freedom              861
                      (T11-T12)   T11         (T11-T12)*(SEC0-1)
    X Coefficient(s)  2.139588    1.017342    0.779706
    Std Err of Coef.  0.049017    0.004365    0.055699