Performance of ICE-1 vs ICE-3 in retrieving water levels over rivers with Jason-2

Taina Conchy (UEA, Brazil)


Adrien Paris (CLS, FRANCE); Stéphane Calmant (IRD, FRANCE); Joécila Santos da Silva (UEA, BRAZIL)

Event: 2018 Ocean Surface Topography Science Team Meeting

Session: Instrument Processing: Measurement and Retracking

Presentation type: Type Poster

The PISTACH project was funded by CNES and conducted by CLS to develop alternate algorithms to retrack Jason-2 echoes collected over other-than open ocean surfaces. In this frame, the ICE-3 algorithm was dedicated to rivers, and expected to perform better than the ICE-1 retracker routinely implemented in the GDRs.
Actually, few studies presented water level series gained with this retracker and none was dedicated to a large comparison of performance compared to ICE-1.
In the present study, we compare water level series gained with both algorithms at ~ 60 locations in the Congo bassin. Since there is no gauge that we could use as ground truth to validate the series, we validated the series indirectly. We checked for the loss in data in the final series, we looked after the consistency with independent information such as discharge series, or compared the probability distribution of the height series to that of historical water level data.

Poster show times:

Room Start Date End Date
Foyer, Salao Nobre & tent Thu, Sep 27 2018,18:00 Thu, Sep 27 2018,20:00
Foyer, Salao Nobre & tent Fri, Sep 28 2018,14:00 Fri, Sep 28 2018,15:00
Taina Conchy