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Sea level anomalies agree with the coincident sea truth (bottom pressure and tide gauge) within 2\u20133 cm rms for seasonal and longer time scales. Analysis for almost ten years of coincident mooring and altimetric velocities shows that a substantial reduction of uncertainty to \u223c4 cm s<jats:sup>\u22121<\/jats:sup> may be possible after reasonable filtering of the noise introduced by more variable coastal sea surface states. The conclusion is that the altimetry success is still limited to seasonal time scales, and provided that the oceanographic signal ensures an adequate signature to be isolated from background noise.<\/jats:p>","DOI":"10.1029\/2005gl022602","type":"journal-article","created":{"date-parts":[[2005,4,13]],"date-time":"2005-04-13T20:20:33Z","timestamp":1113423633000},"source":"Crossref","is-referenced-by-count":103,"title":["Improved satellite altimetry in coastal systems: Case study of the Corsica Channel (Mediterranean Sea)"],"prefix":"10.1029","volume":"32","author":[{"given":"S.","family":"Vignudelli","sequence":"first","affiliation":[{"name":"Istituto di Biofisica Consiglio Nazionale delle Ricerche  Pisa Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P.","family":"Cipollini","sequence":"additional","affiliation":[{"name":"National Oceanography Centre  Southampton UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L.","family":"Roblou","sequence":"additional","affiliation":[{"name":"Laboratoire d'Etudes en G\u00e9ophysique et Oc\u00e9anographie Spatiales (LEGOS) Centre National de la Recherche Scientifique  Toulouse France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"F.","family":"Lyard","sequence":"additional","affiliation":[{"name":"Laboratoire d'Etudes en G\u00e9ophysique et Oc\u00e9anographie Spatiales (LEGOS) Centre National de la Recherche Scientifique  Toulouse France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G. 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