Methodology to Modify the ECMWF Wind Stress
Curl Over the Hawaiian Islands
1. Define a rectangle in the ECMWF wind stress curl field
circumscribing the bull's-eye near Hawaii.
2. Interpolate across the rectangle in both the ECMWF and HR
wind stress fields.
3. Subtract the interpolated HR from the pure HR and add the
residual to the interpolated ECMWF field.
4. Calculate wind stress curl fields and make sure the blending
does not create anomalous curl at the rectangle boundaries.
5. Calculate the linear solution using 1/16° global NLOM; if
positive results run 1/12° Pacific HYCOM.
(Over the Hawaii region the HR stresses are ~40% stronger than
ECMWF, so the HR residual is reduced by this amount.)