Evaluating Differences in Measured Winds During Jasin

A complication encountered in verifying remotely measured winds above the sea is the need to know the surface wind field well enough to have a basis for comparison. Even when sufficient data are available this is difficult because of wind variability and differences in measurement techniques. Winds recorded on moored ocean buoys and on the F/S Meteor during the JASIN experiment are analysed to try to resolve differences between different systems. Winds are grouped in wind speed ranges resulting in non-linear relations between measurement systems. Measurement differences between colocated instruments and an instrument a few km away are better understood. Additional criteria for the use of wind recorders at sea are found. Way to obtain data sets with reduced errors for better scatterometry wind recovery algorithms are suggested.