the float is parked at a certain depth (the Argo operations centre recommends
1000 m), descends to 2000 m every 10 days to start the
temperature and salinity profile, comes to the surface, transmits
its data and returns to its parking depth. In the beginning
of 2006, 46% of floats profile to around 2000m and 66% profile
to depths greater than 1500 m.