A Comparasion Of Quality Indicators for Ku-Band Wind Scatterometry & For Typhoons Lekima and Krosa

NRCS measurements and their noise are mapped to ocean surface vector winds by inverting a Geophysical Model Function (GMF). The GMF is inaccurate or otherwise does not represent the NRCS measurements, e,g., due to rain processes at Ku band. This causes uncertainty in the vector, but also a class of unrepresentative vector winds with high error. Quality Control indicators are developed to find this class of unrepresentative winds. QC indicators have a Probability of Detection (POD), but are not perfect and include a false alarm rate (FAR). The QC optimum between POD and FAR may depend on the user application. [...]