Illustration of the emerging capabilities of SARAL/AltiKa in the coastal zone using a multi-platform approach

[en] Satellite altimetry measurements from SARAL-AltiKa are analysed in the coastal ocean using the results of the G-AltiKa mission (1–5 August 2013), which combined altimeter, HF radar and glider data coincident with the satellite track, south-west of Ibiza Island, in the Western Mediterranean Sea. The absolute dynamic topography, computed from 1 Hz and 40 Hz altimetry data, and the dynamic height, computed from glider temperature and salinity, both exhibited a weak signal with amplitudes of order 2 cm. The resulting geostrophic and HF radar velocities along the track depicted a north-westward coastal current with a maximal velocity larger than 20 cm s−1. This demonstrates that the AltiKa altimeter is able to resolve SLA signals of more than 2 cm, and gradients in those signals over several tens of kilometres. After filtering, the 40 Hz data depicted a signal consistent with the other platforms, up to a distance of order 10 km from the coast.

Disciplines :

Earth sciences & physical geography

Author, co-author :

Troupin, Charles ; Mediterranean Institute for Advanced Studies (IMEDEA), Esporles, Spain

Pascual, Ananda; Mediterranean Institute for Advanced Studies (IMEDEA)

Valladeau, Guillaume

Pujol, Isabelle

Lana, Arantxa

Heslop, Emma

Ruiz, Simón

Torner, Marc

Picot, Nicolas

Tintoré, Joaquín

Language :

English

Title :

Illustration of the emerging capabilities of SARAL/AltiKa in the coastal zone using a multi-platform approach

Publication date :

01 January 2015

Journal title :

Advances in Space Research

ISSN :

0273-1177

eISSN :

1879-1948

Publisher :

Elsevier, Oxford, United Kingdom

Volume :

Issue :

Pages :

51-59

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://www.sciencedirect.com/science/article/pii/S0273117714005754

European Projects :

FP7 - 283367 - MYOCEAN2 - Prototype Operational Continuity for the GMES Ocean Monitoring and Forecasting Service

Funders :

CE - Commission Européenne

Available on ORBi :

since 25 December 2018

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