Ocean Science
Ocean Science
OS
Articles | Volume 12, issue 3
Articles | Volume 12, issue 3
https://doi.org/10.5194/os-12-647-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/os-12-647-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 12, issue 3
Research article
 | 
13 May 2016
Research article |  | 13 May 2016

Analyses of altimetry errors using Argo and GRACE data

Jean-François Legeais, Pierre Prandi, and Stéphanie Guinehut

Data sets

Sea Surface Height from radar altimetry AVISO http://www.aviso.altimetry.fr/en/data/products/ocean-indicators-products/mean-sea-level/processing-corrections.html

10 years of gravity variations from GRACE and LAGEOS data from CNES/GRGS R. Biancale, J.-M. Lemoine, G. Balmino, S. Bruinsma, F. Perosanz, J.-C. Marty, S. Loyer, S. Bourgogne, and P. Gégout, http://grgs.obs-mip.fr/grace/variable-models-grace-lageos

Argo user's manual V3.2 T. Carval, R. Keeley, Y. Takatsuki, T. Yoshida, C. Schmid, R. Goldsmith, A. Wong, A. Thresher, A. Tran, S. Loch, and R. Mccreadie https://doi.org/10.13155/29825

ESA Sea Level Climate Change Initiative (ESA SL_cci): SEA LEVEL ESSENTIAL CLIMATE VARIABLE PRODUCTS A. Cazenave and Sea Level CCI Team https://doi.org/10.5270/esa-sea_level_cci-1993_2013-v_1.1-201412

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Short summary
Sea level is a key indicator of climate change and has been monitored by satellite altimetry for more than 2 decades. The evaluation of the performances of the altimeter missions can be performed by comparison with in situ-independent measurements from Argo profiling floats. This allows for the detection of altimeter drift and the estimation of the impact of a new altimeter standard. This study aims at characterizing the errors of the method thanks to sensitivity analyses to different parameters.
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