On the Use of Satellite Altimeter Data in Argo Quality Control | Zendy

S. Guinehut | Zendy; C. Coatanoan | Zendy; Anne-Lise Dhomps | Zendy; PierreYves Le Traon | Zendy; Gilles Larnicol | Zendy

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On the Use of Satellite Altimeter Data in Argo Quality Control

Author(s) -

S. Guinehut,

C. Coatanoan,

Anne-Lise Dhomps,

PierreYves Le Traon,

Gilles Larnicol

Publication year - 2008

Publication title -

journal of atmospheric and oceanic technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.774

H-Index - 124

eISSN - 1520-0426

pISSN - 0739-0572

DOI - 10.1175/2008jtecho648.1

Subject(s) - argo , altimeter , satellite , environmental science , remote sensing , temperature salinity diagrams , meteorology , geodesy , mode (computer interface) , satellite altimetry , float (project management) , salinity , geology , climatology , computer science , oceanography , geography , marine engineering , aerospace engineering , engineering , operating system

Satellite altimeter measurements are used to check the quality of the Argo profiling floats time series. The method compares collocated sea level anomalies from altimeter measurements and dynamic height anomalies calculated from Argo temperature and salinity profiles for each Argo float time series. Different kinds of anomalies (sensor drift, bias, spikes, etc.) have been identified on some real-time but also delayed-mode Argo floats. About 4% of the floats should probably not be used until they are carefully checked and reprocessed by the principal investigators (PIs). The method appears to be very complementary to the existing quality control checks performed in real time or delayed mode. It could also be used to quantify the impact of the adjustments made in delayed mode on the pressure, temperature, and salinity fields.

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