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This APEX float was launched by U.K. scientists in the Benguela Current at 35.8°S, 0°E on 12 September 2005. It has recorded a total of 188 profiles, and made its last report on 6 November 2010 from 25.4°S, 12.5°W.
The float has spent its time in two currents of the South Atlantic subtropical gyre, a large system of warm and cold surface currents that help to transport heat from the tropics and subtropics to higher latitudes.
There are five subtropical gyres in the ocean, two in the Atlantic north and south of the equator, two in the Pacific, and one in the South Indian Ocean. The gyres are created by the prevailing winds, the Coriolis effect and the shape of the ocean basins.
Profiles of temperature (left) and salinity (right) from Argo float 6900392. The profiles show how temperature (T) and salinity (S) change with depth from the surface to 2000m. Early profiles are dark blue, the latest profiles are deep red or brown. Click on the images for larger plots. Source of plots: IFREMER/Coriolis.
Time series of temperature (left) and salinity (right) from Argo float 6900392. The sections show all the temperature (T) and salinity (S) profiles measured by the float during its life-time side by side. Each profile is represented by a very thin column where deep red is the highest values and deep blue the lowest. The colour bars on the right relate the colours to actual data values. Profile numbers are given along the top of the plot, with corresponding measurement dates along the bottom. Click on the images for larger plots. Source of plots: IFREMER/Coriolis.
Look at the float trajectory in Google Earth to see where the float has been. (If in doubt about how to reveal the float tracks, see our Google Earth screenshot for help.) Compare this to the maps of temperature and salinity for different depths available for example from Mercator ocean analyses.
The Argo Information Centre has more information about this float. You can also download the data from one of the Data Centres - just select Data > Data Downloads.
There are many different formats available. ASCII data can be viewed in spreadsheets such as Excel. The other data types may require more specialist software.