TY - JOUR T1 - Onto a Skewness Approach to the Generalized Curvature Ocean Surface Scattering Model A1 - Said,Faozi A1 - Johnsen,Harald A1 - Nouguier,Frederic A1 - Chapron,Bertrand A1 - Engen,Geir AD - NOAA, Ctr Satellite Applicat & Res, College Pk, MD 20740 USA. AD - Norut, Earth Observat Dept, N-9294 Tromso, Norway. AD - IFREMER, Lab Oceanog Spatiale, F-29280 Plouzane, France. UR - https://doi.org/10.1109/TGRS.2017.2715986 DO - 10.1109/TGRS.2017.2715986 KW - Geophysical measurements KW - radar cross section KW - remote sensing KW - sea surface KW - surface waves N2 - The generalized curvature ocean surface scattering model [general curvature model (GCM)] is extended and revisited. Two key steps are addressed in this paper, namely, a necessary sea surface spectrum undressing procedure and the inclusion of a skewness phase-related component. Normalized radar cross-section (NRCS) simulations are generated at C-band for various wind conditions, polarizations, and incidence angles. Results are compared with CMOD5.n. Although the sea surface spectrum undressing procedure is a necessary step, the overall NRCS dynamic is notably affected only in low wind conditions (<= 5 m/s). The inclusion of the skewness phase-related component makes the most impact to the NRCS dynamic where the upwind/downwind asymmetry is clearly detectable. A good agreement between the upwind/downwind asymmetry of the extended GCM and CMOD5.n is achieved for moderate winds (approximate to 5-10 m/s) and moderate incidence angles (approximate to 32 degrees -40 degrees). For low incidence angles (<26 degrees), the GCM tends to overestimate the upwind/downwind asymmetry compared with CMOD5.n. Y1 - 2017/10 PB - Ieee-inst Electrical Electronics Engineers Inc JF - Ieee Transactions On Geoscience And Remote Sensing SN - 0196-2892 VL - 55 IS - 10 SP - 5843 EP - 5853 ID - 52013 ER -