Validated drifter data are available under 'Regions >>' whereas data from ongoing drifters are under 'Active drifters >>' with restricted access.
The skin depth of the L-band radiometer signal over the ocean is about 1cm whereas classical surface salinty measured by ships or ARGO floats are performed at a few meters depth. In order to improve the knowledge of the SSS variability in the first 50cm depth, to better document the SSS variability in a satellite pixel and to provide ground-truth as close as possible to the sea surface for validating satellite SSS, the L-band remotely sensed community proposed to deploy numerous surface drifters over various parts of the ocean.
The Spanish Cal/Val project concentrates on deployments in the western Equatorial Atlantic (near Amazone plume, April 2010), along a circunnavigation cruise (Malaspina, October 2010 - May 2011), S. Atlantic, S. Indian, Eq. Pacific, in the Mediterranean Sea, the Bay of Biscay and the subtropical north Atlantic. Funding of drifters are mostly supported by SMOS Barcelona Expert Centre.
The German Cal/Val project concentrates on deployments in the tropical Pacific ocean and the subpolar north Atlantic Ocean, in association with the NOAA Global drifter Program.
We acknowledge the great support provided by different voluntary observing vessels for the deployment of drifters. In particular, MV Colibri from The Compagnie maritime Nantaise, MV Monte Olivia and Rio Blanco from Hamburg Süd, Tropical Islander and South Islander, sailboats Podorange and Tara, and various research vessels during cruises or transits, including RV Antea, Alis, Côtes de la Manche, Suroit, PP, Hesperides