Baltic Sea CMEMS CoVe-Pol and CoHo-Pol models Copernicus Doppler radar GF-3 RADARSAT Constellation Mission (RCM) SAR SMAP Sentinel-1 Synthetic Aperture Radar Wake detection air-sea interaction co-polarized phase difference coast and ocean observation compact polarization (CP) cross-polarization detectability model dispersion curve filtering dual-polarization eyewall replacement cycles fetch- and duration-limited wave growth relationships geophysical model function (GMF) hurricane hurricane internal dynamical process marine X-band radar ocean surface waves ocean surface wind speed retrieval ocean winds oceans