ITP47 Data Description

The ITP profiler was configured to operate on a fast sampling schedule of 4 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.

The buoy drifted with the Transpolar Drift over the Lomonsov Ridge towards Fram Strait transmitting data until it was apparently submerged below the ice north of Greenland on December 24, 2011.  On May 19, 2012, the buoy reappeared 2000 km south in the Denmark Strait between Greenland and Iceland and resumed transmitting backlogged profiles (without locations during the time it was under the ice) and present GPS locations.  The profiler was no longer communicating with the surface package, and the unit finally ceased transmitting altogether nearly 5 months later on October 4, 2012.  Almost one year later, in September 2013, the buoy was discovered washed ashore on western Ireland.

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 47 data can also be found at the links below:

Level II hourly buoy location data in ASCII format: itp47rawlocs.dat

Level III 1-Hz processed profile data in MATLAB format: itp47cormat.tar.Z and itp47cormat.zip

Level III 1-db bin-averaged processed profile data in MATLAB format: itp47final.mat
Level III 1-db bin-averaged processed profile data in ASCII format: itp47final.tar.Z and itp47final.zip