First waveforms over river from the nadir altimeter on Swot

Series of waveforms (colored areas) acquired by Swot's nadir altimeter, Poseidon-3C, over several rivers in the Maroni basin in French Guiana, South America, on January 20, 2023. (Credit Cnes (Sophie Le Gac & Alexandre Guérin))
Series of waveforms (colored areas) acquired by Swot's nadir altimeter, Poseidon-3C, over several rivers in the Maroni basin in French Guiana, South America, on January 20, 2023. (Credit Cnes (Sophie Le Gac & Alexandre Guérin))
Zoom on the figure below over the Litani river & a single waveform extracted from it, typical of what can be acquired on such rivers (Credit Cnes (Sophie Le Gac & Alexandre Guérin))
Zoom on the figure below over the Litani river & a single waveform extracted from it, typical of what can be acquired on such rivers (Credit Cnes (Sophie Le Gac & Alexandre Guérin))

After a successful launch on Dec. 16, 2022, the Poseidon-3C nadir altimeter onboard the Swot satellite has started delivering its first measurements. The colored images on this map show the waveforms sucessfully acquired by Poseidon-3C over several rivers in the Maroni basin in French Guiana, on January 20, 2023. These waveforms show the excellent tracking performances of Poseidon-3C in orbit. I-GDR data have been processed through the Cnes Swot Expertise Center.