Articles | Volume 12, issue 3
Ocean Sci., 12, 825–842, 2016
https://doi.org/10.5194/os-12-825-2016
Ocean Sci., 12, 825–842, 2016
https://doi.org/10.5194/os-12-825-2016

Research article 27 Jun 2016

Research article | 27 Jun 2016

Major improvement of altimetry sea level estimations using pressure-derived corrections based on ERA-Interim atmospheric reanalysis

Loren Carrere et al.

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Cited articles

Ablain, M., Cazenave, A., Valladeau, G., and Guinehut, S.: A new assessment of the error budget of global mean sea level rate estimated by satellite altimetry over 1993–2008, Ocean Sci., 5, 193–201, https://doi.org/10.5194/os-5-193-2009, 2009.
AVISO: OSTM/Jason-2 products handbook, SALP-MU-M-OP-15815-CN, Edn. 1.8, http://www.aviso.oceanobs.com/fileadmin/documents/data/tools/hdbk_j2.pdf (last access: 13 May 2015), 2011.
Carrere, L.: Etude et modélisation de la réponse haute fréquence de l'océan global aux forçages météorologiques, Toulouse, université Toulouse III – Paul Sabatier, 2003.
Carrere, L.: Rapport d'étude CNES/CLS, reference CLS-DOS-NT-05-007, 2005.
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Short summary
New dynamic atmospheric (DAC_ERA) and dry tropospheric (DT_ERA) correction have been computed for the altimeter period using the ERA-Interim meteorological reanalysis. The corrections improve sea level estimations in Southern Ocean and in shallow waters; the impact is the most important for the first decade of altimetry, when operational meteorological models had a weaker quality. DT_ERA remains better in the recent period. New corrections significantly impact long-term regional trends.