TY - JOUR T1 - 2D ocean waves spectra from space: a challenge for validation and synergetic use A1 - Mouche,Alexis A1 - He,W. A1 - Husson,R. A1 - Guitton,Gilles A1 - Chapron,Bertrand A1 - Li,Huimin AD - IFREMER LOPS Pointe Diable, F-29280 Plouzane, France. AD - Nankai, NOTC, 60,Xianyang Rd, Tianjin, Peoples R China. AD - CLS, Ave Perouse,Batiment Ponant, F-29280 Plouzane, France. AD - OceanDataLab, F-29280 Plouzane, France. UR - https://archimer.ifremer.fr/doc/00364/47469/ DO - 10.1117/12.2227178 KW - Ocean remote sensing KW - synthetics aperture radar KW - ocean wave-spectrometer KW - 2D ocean wave spectrum KW - Level-4 N2 - Sentinel-1 A now routinely acquires data over the ocean since 2014. Data are processed by ESA through the Payload Data Ground Segment up to Level-2 for Copernicus users. Level-2 products consist of geo-located geophysical parameters related to wind, waves and ocean current. In particular, Sentinel-1A wave measurements provide 2D ocean swell spectra (2D wave energy distribution as a function of wavelength and direction) as well as integrated parameters such as significant wave height, dominant wavelength and direction for each partition. In 2016, Sentinel-1 B will be launched by ESA and GF-3 by CNSA. Then in 2018, CFOSAT (China France Oceanography Satellite project), a joint mission from the Chinese and French Space Agencies, will be launched. They will also provide 2D Ocean waves spectra. This paper focuses on the techniques used to validate 2D-ocean waves as measured by satellite and the challenges and opportunities of such a program for ocean waves measurements from space. Y1 - 2016 PB - Spie-int Soc Optical Engineering JF - Remote Sensing Of The Oceans And Inland Waters: Techniques, Applications, And Challenges SN - 0277-786X VL - 9878L SP - 1 EP - 16 ID - 47469 ER -