ITP49 Data Description

The ITP profiler was configured to operate on a standard sampling schedule of 2 one-way profiles between 7 and 750 m depth each day. In the surface package, the GPS receiver was powered hourly to obtain locations hourly, and buoy temperature and battery voltage status were recorded.

During the profiler’s short life, the buoy drifted with the Transpolar Drift over the Lomonsov Ridge towards the North Pole for one month before communications with the underwater ceased for no apparent reason. The surface package continued to transmit status and GPS locations for just over another 800 days as it travelled eastward along 85°N, then crossed back over the Lomonosov Ridge and passed through Fram Strait with the East Greenland Current. The last location has the surface package near shore off northern Iceland.

The plots to the right are of the final, calibrated, edited data (as opposed to the raw data presented on the active instrument pages).

See the Data Products tab to the left for descriptions of the three levels (I, II, III) of data processing and to access all data.

ITP 49 data can also be found at the links below:

Level II hourly buoy location data in ASCII format: itp49rawlocs.dat

Level III 1-Hz processed profile data in MATLAB format: itp49cormat.tar.Z and itp49cormat.zip

Level III 1-db bin-averaged processed profile data in MATLAB format: itp49final.mat
Level III 1-db bin-averaged processed profile data in ASCII format: itp49final.tar.Z and itp49final.zip

Plot of buoy locations.

ITP49 temperature and salinity contours.

Composite plot of ITP temperature and salinity contours.