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This APEX float was launched by German scientists at 43°N, 46.6°W on 19 September 2003. It has recorded a total of 171 profiles, and made its last report on 16 December 2009 from 30.6°N, 48.5°W.
Interpreting the data from this and other Argo floats means thinking about the float trajectory, the climate of the region the float has passed through, and the currents that have moved the float from place to place.
Our hints on interpreting the plots give examples of the sort of thing you should look out for in the float data. You may also find useful information by looking at floats from our float selection. Choose a float from a similar location to this one, and see how the two floats compare.
Profiles of temperature (left) and salinity (right) from Argo float 4900349. 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 4900349. 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.