Articles | Volume 16, issue 6
https://doi.org/10.5194/os-16-1399-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-16-1399-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
13 Nov 2020
Research article |
| 13 Nov 2020
| 13 Nov 2020
Measuring ocean total surface current velocity with the KuROS and KaRADOC airborne near-nadir Doppler radars: a multi-scale analysis in preparation for the SKIM mission
Louis Marié
CORRESPONDING AUTHOR
Laboratoire d'Océanographie Physique et Spatiale (LOPS), UMR 6523, Univ Brest, CNRS, Ifremer, IRD, 29280 Plouzané, France
Fabrice Collard
OceanDataLab, 29280 Locmaria-Plouzané, France
Frédéric Nouguier
Laboratoire d'Océanographie Physique et Spatiale (LOPS), UMR 6523, Univ Brest, CNRS, Ifremer, IRD, 29280 Plouzané, France
Lucia Pineau-Guillou
Laboratoire d'Océanographie Physique et Spatiale (LOPS), UMR 6523, Univ Brest, CNRS, Ifremer, IRD, 29280 Plouzané, France
Danièle Hauser
Université Paris-Saclay, UVSQ, Sorbonne Université, CNRS, LATMOS, 78280 Guyancourt, France
François Boy
Centre Nationale d'Etudes Spatiales, 31400 Toulouse, France
Stéphane Méric
Institut d'Électronique et des Technologies du numéRique (IETR), UMR CNRS 6164, 35700 Rennes, France
Peter Sutherland
Laboratoire d'Océanographie Physique et Spatiale (LOPS), UMR 6523, Univ Brest, CNRS, Ifremer, IRD, 29280 Plouzané, France
Charles Peureux
Laboratoire d'Océanographie Physique et Spatiale (LOPS), UMR 6523, Univ Brest, CNRS, Ifremer, IRD, 29280 Plouzané, France
Goulven Monnier
SCALIAN, 35700 Rennes, France
Bertrand Chapron
Laboratoire d'Océanographie Physique et Spatiale (LOPS), UMR 6523, Univ Brest, CNRS, Ifremer, IRD, 29280 Plouzané, France
Adrien Martin
National Oceanography Centre, Southampton SO14 3ZH, UK
Pierre Dubois
Collecte Localisation Satellites, 31520 Ramonville-St-Agne, France
Craig Donlon
European Space Agency, ESTEC, Noordwijk, The Netherlands
Tania Casal
European Space Agency, ESTEC, Noordwijk, The Netherlands
Fabrice Ardhuin
Laboratoire d'Océanographie Physique et Spatiale (LOPS), UMR 6523, Univ Brest, CNRS, Ifremer, IRD, 29280 Plouzané, France
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We describe the OceanFlux Greenhouse Gases methodology for creating an ocean surface CO2 climatology. In situ measurements valid for instantaneous sea surface temperature (SST) were recomputed using a more consistent and averaged SST. The results were normalised to year 2010, averaged by month, and interpolated onto a global 1°×1° grid. The 12 monthly distributions of ocean surface CO2 (see supplement) can be used in air-sea gas flux calculations together with climatologies of other variables.
P. E. Land, J. D. Shutler, R. D. Cowling, D. K. Woolf, P. Walker, H. S. Findlay, R. C. Upstill-Goddard, and C. J. Donlon
Biogeosciences, 10, 8109–8128, https://doi.org/10.5194/bg-10-8109-2013, https://doi.org/10.5194/bg-10-8109-2013, 2013
Related subject area
Approach: Remote Sensing | Depth range: Surface | Geographical range: All Geographic Regions | Phenomena: Current Field
Multicore structures and the splitting and merging of eddies in global oceans from satellite altimeter data
Measuring currents, ice drift, and waves from space: the Sea surface KInematics Multiscale monitoring (SKIM) concept
Jason continuity of services: continuing the Jason altimeter data records as Copernicus Sentinel-6
Eddy surface properties and propagation at Southern Hemisphere western boundary current systems
Wei Cui, Wei Wang, Jie Zhang, and Jungang Yang
Ocean Sci., 15, 413–430, https://doi.org/10.5194/os-15-413-2019, https://doi.org/10.5194/os-15-413-2019, 2019
Short summary
Short summary
Mesoscale eddies are large bodies of swirling water, which generally refer to ocean signals with spatial scales of tens to hundreds of kilometers and temporal scales of days to months. This study identified events of splitting and merging of mesoscale eddies in the global ocean based on sea level height data. Multicore structures represent an intermediate stage in the process of eddy evolution, similar to the generation of multiple nuclei in a cell as a preparatory phase for cell division.
Fabrice Ardhuin, Yevgueny Aksenov, Alvise Benetazzo, Laurent Bertino, Peter Brandt, Eric Caubet, Bertrand Chapron, Fabrice Collard, Sophie Cravatte, Jean-Marc Delouis, Frederic Dias, Gérald Dibarboure, Lucile Gaultier, Johnny Johannessen, Anton Korosov, Georgy Manucharyan, Dimitris Menemenlis, Melisa Menendez, Goulven Monnier, Alexis Mouche, Frédéric Nouguier, George Nurser, Pierre Rampal, Ad Reniers, Ernesto Rodriguez, Justin Stopa, Céline Tison, Clément Ubelmann, Erik van Sebille, and Jiping Xie
Ocean Sci., 14, 337–354, https://doi.org/10.5194/os-14-337-2018, https://doi.org/10.5194/os-14-337-2018, 2018
Short summary
Short summary
The Sea surface KInematics Multiscale (SKIM) monitoring mission is a proposal for a future satellite that is designed to measure ocean currents and waves. Using a Doppler radar, the accurate measurement of currents requires the removal of the mean velocity due to ocean wave motions. This paper describes the main processing steps needed to produce currents and wave data from the radar measurements. With this technique, SKIM can provide unprecedented coverage and resolution, over the global ocean.
Remko Scharroo, Hans Bonekamp, Christelle Ponsard, François Parisot, Axel von Engeln, Milen Tahtadjiev, Kristiaan de Vriendt, and François Montagner
Ocean Sci., 12, 471–479, https://doi.org/10.5194/os-12-471-2016, https://doi.org/10.5194/os-12-471-2016, 2016
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The Sentinel-6 mission is proposed as a multi-partner programme to continue the Jason satellite altimeter data services beyond the Jason-2 and Jason-3 missions. The Sentinel-6 mission programme consists of two identical satellites flying in sequence to prolong the climate data record of sea level accumulated by the TOPEX/Poseidon, Jason-1, Jason-2, and Jason-3 missions from 2020 to beyond 2030.
G. S. Pilo, M. M. Mata, and J. L. L. Azevedo
Ocean Sci., 11, 629–641, https://doi.org/10.5194/os-11-629-2015, https://doi.org/10.5194/os-11-629-2015, 2015
Short summary
Short summary
Oceanic eddies are closed circulation features that transport water between regions, taking part in the ocean's heat and salt balance. We perform a comparative eddy census in the East Australian, Agulhas and Brazil currents. We find that eddy propagation in all systems is steered by the local mean flow and bathymetry. Also, eddies present a geographic segregation according to size. Investigating eddy propagation helps us to better understand their effect in local mixing.
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Short summary
With present-day techniques, ocean surface currents are poorly known near the Equator and globally for spatial scales under 200 km and timescales under 30 d. Wide-swath radar Doppler measurements are an alternative technique. Such direct surface current measurements are, however, affected by platform motions and waves. These contributions are analyzed in data collected during the DRIFT4SKIM airborne and in situ experiment, demonstrating the possibility of measuring currents from space globally.
With present-day techniques, ocean surface currents are poorly known near the Equator and...
