Measuring currents, ice drift, and waves from space: the Sea surface KInematics Multiscale monitoring (SKIM) concept
Type | Article | ||||||||||||
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Date | 2018-05 | ||||||||||||
Language | English | ||||||||||||
Author(s) | Ardhuin Fabrice![]() ![]() ![]() ![]() ![]() |
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Affiliation(s) | 1 : Univ Brest, CNRS, IFREMER, LOPS,IRD, Brest, France. 2 : Natl Oceanog Ctr, Southampton SO14 3ZH, Hants, England. 3 : CNR, ISMAR, Natl Res Council, Inst Marine Sci, Venice, Italy. 4 : Nansen Environm & Remote Sensing Ctr, Bergen, Norway. 5 : GEOMAR Helmholtz Ctr Ocean Res Kiel, Kiel, Germany. 6 : Thales Alenia Space, Toulouse, France. 7 : OceanDataLab, 870 Route Deolen, F-29280 Locmaria Plouzane, France. 8 : Univ Toulouse, LEGOS, CNES, CNRS,IRD, Toulouse, France. 9 : Univ Coll, Dublin, Ireland. 10 : CNES, 18 Ave Edouard Belin, F-31400 Toulouse, France. 11 : CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA. 12 : CALTECH, Earth Sci Div, Jet Prop Lab, Pasadena, CA 91125 USA. 13 : Univ Cantabria, Environm Hydraul Inst IH Cantabria, Santander, Spain. 14 : Scalian Alyotech, 2 Rue Antoine Becquerel, F-35700 Rennes, France. 15 : CLS, 8-10 Rue Hermes, F-31520 Ramonville St Agne, France. 16 : Univ Utrecht, Inst Marine & Atmospher Res, Utrecht, Netherlands. |
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Source | Ocean Science (1812-0784) (Copernicus Gesellschaft Mbh), 2018-05 , Vol. 14 , N. 3 , P. 337-354 | ||||||||||||
DOI | 10.5194/os-14-337-2018 | ||||||||||||
WOS© Times Cited | 81 | ||||||||||||
Abstract | We propose a satellite mission that uses a near-nadir Ka-band Doppler radar to measure surface currents, ice drift and ocean waves at spatial scales of 40 km and more, with snapshots at least every day for latitudes 75 to 82 degrees, and every few days for other latitudes. The use of incidence angles of 6 and 12 degrees allows for measurement of the directional wave spectrum, which yields accurate corrections of the wave-induced bias in the current measurements. The instrument's design, an algorithm for current vector retrieval and the expected mission performance are presented here. The instrument proposed can reveal features of tropical ocean and marginal ice zone (MIZ) dynamics that are inaccessible to other measurement systems, and providing global monitoring of the ocean mesoscale that surpasses the capability of today's nadir altimeters. Measuring ocean wave properties has many applications, including examining wave-current interactions, air-sea fluxes, the transport and convergence of marine plastic debris and assessment of marine and coastal hazards. |
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