FN Archimer Export Format PT J TI The Eddy Experiment: GNSS-R speculometry for directional sea-roughness retrieval from low altitude aircraft - art. no. L21307 BT AF GERMAIN, O RUFFINI, Giulio SOULAT, F CAPARRINI, M CHAPRON, Bertrand SILVESTRIN, P AS 1:;2:;3:;4:;5:;6:; FF 1:;2:;3:;4:;5:PDG-DRO-DOPS-LOS;6:; C1 Starlab, Res Dept, E-08035 Barcelona, Spain. Inst Francais Rech Exploitat Mer, Plouzane, France. European Space Agcy, European Space Res & Technol Ctr, NL-2200 AG Noordwijk, Netherlands. C2 STARLAB, SPAIN IFREMER, FRANCE EUROPEAN SPACE AGCY, NETHERLANDS SI BREST SE PDG-DRO-DOPS-LOS IN WOS Ifremer jusqu'en 2018 copubli-europe IF 2.378 TC 77 UR https://archimer.ifremer.fr/doc/2004/publication-749.pdf LA English DT Article DE ;Numerical model;Velocity;Sea surface roughness;Eddies;Delay Doppler Map;Remote sensing;Oceanography AB We report the retrieval of sea surface directional mean square slope from Global Navigation Satellite System Reflections (GNSS-R) Delay-Doppler-Map (DDM) data collected during an experimental flight at 1 km altitude. We emphasize the utilization of the entire DDM to more precisely infer ocean roughness directional parameters, and argue that the DDM exhibits the impact of both roughness and scatterer velocity. Obtained estimates are analyzed and compared with Jason-1 measurements, ECMWF numerical weather model outputs and optical data. PY 2004 PD NOV SO Geophysical Research Letters SN 0094-8276 PU AGU VL 31 IS 21 UT 000225190100005 DI 10.1029/2004GL020991 ID 749 ER EF