New altimetry products in semi-enclosed seas are of major interest given the importance of the coastal-open ocean interactions. This study shows how reprocessed altimetry products in the Mediterranean Sea from Archiving, Validation and Interpolation of Satellite Oceanographic data (AVISO) have improved the representation of the surface circulation over the 1993–2012 period. We focus on the Alboran Sea, which is the highest mesoscale activity area of the western Mediterranean. The respective impacts of the new mean dynamic topography (MDT) and mapped sea level anomaly (MSLA) on the description of the Western Alboran Gyre (WAG) are quantitatively evaluated. The temporal mean and variability of the total kinetic energy have been significantly increased in the WAG considering both the new MDT and MSLA (by more than 50%). The new MDT has added 39% to the mean kinetic energy, while the new MSLA has increased the eddy kinetic energy mean (standard deviation) by 53% (30%). The new MSLA has yielded higher variability of total (eddy) kinetic energy, especially in the annual frequency band by a factor of 2 (3). The MDT reprocessing has particularly increased the low-frequency variability of the total kinetic energy by a factor of 2. Geostrophic velocities derived from the altimetry products have also been compared with drifter data. Both reprocessed MDT and MSLA products intensify the velocities of the WAG making them closer to the in situ estimations, reducing the root mean square differences and increasing the correlation for the zonal and meridional components. The results obtained using refined coastal processing of altimetry products and new observational data are very encouraging to better understand the ocean circulation variability and coastal-open ocean interactions, and for potential improvements in other sub-basins, marginal seas and coastal global ocean.
R. Atlas, R.N. Hoffman, J. Ardizzone, S.M. Leidner, J.C. Jusem, D.K. Smith, and D. Gombos A cross-calibrated, multiplatform ocean surface wind velocity product for meteorological and oceanographic applications Bull. Am. Meteorol. Soc. 92 2 2011 157 174 10.1175/2010BAMS2946.1
A. Baldacci, G. Corsini, R. Grasso, G. Manzella, J.T. Allen, P. Cipollini, and et al. A study of the Alboran sea mesoscale system by means of empirical orthogonal function decomposition of satellite data J. Mar. Syst. 29 1-4 2001 293 311 10.1016/S0924-7963(01)00021-5
M.J. Bell, A. Schiller, P.-Y. Le Traon, N.R. Smith, E. Dombrowsky, and K. Wilmer-Becker An introduction to GODAE OceanView J. Oper. Oceanogr. 8 sup1 2015 s2 s11 10.1080/1755876X.2015.1022041
F. Birol, and F. Niño Ku-and Ka-band altimeter data in the Northwestern Mediterranean Sea: impact on the observation of the coastal ocean variability Mar. Geod. 38 sup1 2015 313 327 10.1080/01490419.2015.1034814
A. Capet, E. Mason, V. Rossi, C. Troupin, Y. Faugère, M.-I. Pujol, and et al. Implications of refined altimetry on estimates of mesoscale activity and eddy-driven offshore transport in the Eastern Boundary Upwelling Systems Geophys. Res. Lett. 41 21 2014 7602 7610 10.1002/2014GL061770
P. Cipollini, J. Beneviste, J. Bouffard, W. Emery, L. Fenoglio-Marc, and C. Gommenginger The role of altimetry in coastal observing systems J. Hall, J. Harrison, D. Stammer, Proceedings of OceanObs'09: Sustained Ocean Observations and Information for Society 2 2010 European Space Agency 181 191 WPP-306
G. Dibarboure, M.-I. Pujol, F. Briol, P.-Y. Le Traon, G. Larnicol, N. Picot, and et al. Jason-2 in DUACS: first tandem results and impact on processing and products Mar. Geod. 34 3-4 2011 214 241 10.1080/01490419.2011.58482
R. Dussurget, F. Birol, R. Morrow, and P. De Mey Fine resolution altimetry data for a regional application in the Bay of Biscay Mar. Geod. 34 3-4 2011 447 476 10.1080/01490419.2011.584835
E. Escudier, J. Bouffard, A. Pascual, P.-M. Poulain, and M.-I. Pujol Improvement of coastal and mesoscale observation from space: application to the north-western Mediterranean Sea Geophys. Res. Lett. 40 10 2013 2148 2153 10.1002/grl.50324
M.M. Flexas, D. Gomis, S. Ruiz, A. Pascual, and P. Leon In situ and satellite observations of the eastward migration of the Western Alboran Sea Gyre Prog. Oceanogr. 70 2 2006 486 509 10.1016/j.pocean.2006.03.017
K. Haines, D. Lea, and R. Bingham Using the GOCE MDT in ocean data assimilation Proc. of 4th International GOCE User Workshop, Munich, Germany, 31 March - 1 April (ESA SP-696, July 2011) 2011
M. Juza, B. Mourre, J.-M. Lellouche, M. Tonani, and J. Tintoré From basin to sub-basin scale assessment and intercomparison of numerical simulations in the western Mediterranean Sea J. Mar. Syst. 149 2015 36 49 10.1016/j.jmarsys.2015.04.010
P.Y. Le Traon, F. Hernandez, M.-H. Rio, and F. Davidson How operational oceanography can benefit from dynamic topography estimates as derived from altimetry and improved geoid Space Sci. Rev. 108 1-2 2003 239 249
P.Y. Le Traon From satellite to Argo and operational oceanography: three revolutions in oceanography Ocean Sci. 9 5 2013 901 915 10.5194/os-9-901-2013
D. Macías, M. Bruno, F. Echevarría, A. Vázquez, and C.M. García Meteorologically induced mesoscale variability of the North-western Alboran Sea (southern Spain) and related biological patterns Estuarine Coastal Shelf Sci. 78 2 2008 250 266 10.1016/j.ecss.2007.12.008
D. Macías, I.A. Catalán, J. Solé, B. Morales-Nin, and J. Ruiz Atmospheric-induced variability of hydrological and biogeochemical signatures in the NW Alboran Sea. Consequences for the spawning and nursery habitats of European anchovy Deep Sea Res. Part I 58 12 2011 1175 1188 10.1016/j.dsr.2011.08.013
M. Marcos, A. Pascual, and M.-I. Pujol Improved satellite altimeter mapped sea level anomalies in the Mediterranean Sea: a comparison with tide gauges Adv. Space Res. 56 4 2015 596 604 10.1016/j.asr.2015.04.027
N. Maximenko, and P.P. Niiler Mean surface circulation of the global ocean inferred from satellite altimeter and drifter data 15 years of Progress in Radar Altimetry 2006 ESA Publication SP-614
D.J. McGillicuddy Jr. Mechanisms of physical-biological-biogeochemical interaction at the ocean mesoscale Mar. Sci. 8 1 2016 125 159 10.1146/annurev-marine-010814-015606
R. Morrow, and P.-Y. Le Traon Recent advances in observing mesoscale ocean dynamics with satellite altimetry Adv. Space Res. 50 8 2012 1062 1076
B. Mourre, P. De Mey, Y. Ménard, F. Lyard, and C. Le Provost Relative performance of future altimeter systems and tides gauges in constraining a model of North Sea high-frequency barotropic dynamics Ocean Dyn. 56 5-6 2006 473 486 10.1007/s10236-006-0081-2
T. Oguz, D. Macias, J. Garcia-Lafuente, A. Pascual, and J. Tintoré Fueling plankton production by a meandering frontal jet: A CASE STUDY for the Alboran Sea (Western Mediterranean) PLoS One 9 11 2014 e111482 10.1371/journal.pone.0116653
P.R. Oke, and S. Schiller Impact of Argo, SST and altimeter data on an eddy-resolving ocean reanalysis Geophys. Res. Lett. 34 19 2007 L19601
A. Pascual, M.-I. Pujol, G. Larnicol, P.Y. Le Traon, and M.H. Rio Mesoscale mapping capabilities of multi-satellite altimeter mission: first results with real data in the Mediterranean Sea J. Mar. Syst. 65 1-4 2007 190 2011
A. Pascual, C. Boone, G. Larnicol, and P.Y. Le Traon On the quality of real-time altimeter gridded fields: comparison with in situ data J. Atmos. Oceanic Technol. 26 3 2009 556 569 10.11752008JTECHO556.1
A. Pascual, E. Vidal-Vijande, S. Ruiz, S. Somot, and V. Papadopoulos Spatiotemporal Variability of the Surface Circulation in the Western Mediterranean: A Comparative Study Using Altimetry and Modeling first ed. Gian Luca Eusebi Borzelli, Miroslav Gacic, Piero Lionello, Paola Malanotte-Rizzoli, The Mediterranean Sea: Temporal Variability and Spatial Patterns, Geophysical Monograph 202 2014 John Wiley and Sons, Inc
T. Penduff, M. Juza, L. Brodeau, G.C. Smith, B. Barnier, J.-M. Molines, and et al. Impact of global ocean model resolution on sea-level variability with emphasis on interannual time scales Ocean Sci. 6 1 2010 269 284
P. Poulain, M. Menna, and E. Mauri Surface geostrophic circulation of the Mediterranean Sea derived from drifter and satellite altimeter data J. Phys. Oceanogr. 42 6 2012 973 990 10.1175/JPO-D-11-0159.1
M.-I. Pujol, and G. Larnicol Mediterranean Sea eddy kinetic energy variability from 11 years of altimetric data J. Mar. Syst. 58 3-4 2005 121 142
M.-I. Pujol, Y. Faugère, G. Taburet, S. Dupuy, C. Pelloquin, M. Ablain, and et al. DUACS DT2014: the new multi-mission altimeter dataset reprocessed over 20 years Ocean Sci. Discuss 2016 10.5194/os-2015-110 under review
L. Renault, T. Oguz, A. Pascual, G. Vizoso, and J. Tintoré Surface circulation in the Alboran Sea (western Mediterranean) inferred from remotely sensed data J. Geophys. Res. Oceans 117 C8 2012 10.1029/2011JC007659
M.-H. Rio, P.-M. Poulain, A. Pascual, E. Mauri, G. Larnicol, and R. Santoleri A mean dynamic topography of the Mediterranean Sea computed from altimetric data, in-situ measurements and a general circulation model J. Mar. Syst. 65 1-4 2007 484 508 10.1016/j.jmarsys.2005.02.006
M.-H. Rio, A. Pascual, P.-M. Poulain, M. Menna, B. Barceló, and J. Tintoré Computation of a new mean dynamic topography for the Mediterranean Sea from model outputs, altimeter measurements and oceanographic in situ data Ocean Sci. 10 2014 731 744 10.5194/os-10-731-2014
A.R. Robinson, W.G. Leslie, A. Theocharis, and A. Lascaratos Mediterranean sea circulation Encyclopedia of Ocean Sciences 3 2001 Academic London 1689 1705 10.1006/rwos.2001.0376
J. Ruiz, D. Macías, M.M. Rincón, A. Pascual, I.A. Catalán, and G. Navarro Recruiting at the edge: kinetic energy inhibits anchovy populations in the Western Mediterranean PLoS One 8 2 2013 e55523 10.1371/journal.pone.0055523
Ssalto/Duacs User Handbook: M(SLA) and M(ADT) Near-Real Time and Delayed-Time, 2014. SALP-MU-P-EA-21065-CLS, 4.1 edition, May 2014. Available at < http://www.aviso.altimetry.fr/fileadmin/documents/data/tools/hdbk-duacs.pdf > (last access 07.12.15).
K.E. Taylor Summarizing multiple aspects of model performance in a single diagram J. Geophys. Res. Atmos. 106 D7 2001 7183 7192
J. Tintoré, P.E. La Violette, I. Blade, and A. Cruzado A study of an intense density front in the Eastern Alboran Sea: the Almeria-Oran front J. Phys. Oceanogr. 18 1988 1384 1397
J. Tintoré, D. Gomis, and S. Alonso Mesoscale dynamics and vertical motion in the Alboran Sea J. Phys. Oceanogr. 21 1991 811 823
J. Tintoré, G. Vizoso, B. Casa, E. Heslop, A. Pascual, A. Orfila, and et al. SOCIB: the Balearic Islands coastal ocean observing and forecasting system responding to science, technology and society needs Mar. Technol. Soc. J. 47 1 2013 101 117
M. Tonani, N. Pinardi, S. Dobricic, M.-I. Pujol, and C. Fratianni A high-resolution free-surface model of the Mediterranean Sea Ocean Sci. 4 1 2008 1 14
M. Tonani, A. Teruzzi, G. Korres, N. Pinardi, A. Crise, M. Adani, and et al. The Mediterranean monitoring and forecasting centre, a component of the MyOcean system H. Dahlin, N.C. Fleming, S.E. Petersson, Proceedings of the 6th International Conference on EuroGOOS 4-6 October 2011 2014 Eurogoos Publication Sopot, Poland 978-91-974828-9-9 (First published 2014. No. 30)
C. Troupin, A. Pascual, G. Valladeau, I. Pujol, A. Lana, E. Heslop, and et al. Illustration of the emerging capabilities of SARAL/AltiKa in the coastal zone using a multi-platform approach Adv. Space Res. 55 1 2015 51 59 10.1016/j.asr.2014.09.011
S. Vignudelli, A. Kostianoy, P. Cipollini, and J. Benveniste Coastal Altimetry 2011 Springer 978-3-642-12795-3 10.1007/978-3-642-12796-0
A. Viúdez, J.-M. Pinot, and R.L. Haney On the upper circulation in the Alboran Sea J. Geophys. Res. 103 C10 1998 21653 21666
