water during the time of buoy operation to determine the difference error 
correction (Table A5). The difference error correction is added to d_ to 
obtain the corrected difference error D . For temperatures during buoy 
operation greater than the buoy temperature during calibration (e.g., 22.4° C) 
no correction is necessary. Water temperature values may best be determined 
from the water characteristics section or the CERC FRF Monthly Preliminary 
Summaries. * 
Table A5 
Temperature-Dependent Sensitivity Error Adjustment 
Difference Water Temperature, °C 
d PEL SEN Ie Fos IPN ay ER PL g 
0.00 0.000 0.001 0.001 0.001 0.001 0.000 -0.000 -0.002 
-0.01 0.007 0.008 0.009 0.010 0.011 0.011 0.011 
-0.02 0.009 0.012 0.014 0.016 0.018 0.019 0.020 
-0.03 0.009 0.013 0.016 0.019 0.021 0.024 0.026 
-0.04 0.008 0.012 0.016 0.020 0.023 0.027 0.029 
-0.05 0.006 0.011 0.016 0.020 0.024 0.028 0.037 
-0.06 0.004 0.010 0.015 0.020 0.025 0.030 0.034 
-0.07 0.003 0.009 0.015 0.021 0.026 0.031 0.036 
-0.08 0.003 0.010 0.017 0.023 0.029 0.034 0.037 
-0.09 0.006 0.013 0.019 0.026 0.032 0.038 0.043 
-0.10 0.010 0.017 0.024 0.031 0.037 0.013 0.049 
Application of Error Corrections 
7. Since these error corrections are oscillation-period dependent, 
their application requires that the wave data be decomposed into amplitude or 
variance-spectrum coefficients for each frequency or period. A less accurate 
but also less complicated procedure would be to apply a single correction to 
the wave height An based on the peak spectral wave period To and an 
average water temperature estimate. For correction of amplitudes or derived 
parameters linearly related to amplitude, a correction factor F(T) can be 
* These Summaries can be obtained from the FRF in Duck, N. C. 
AT 
