ITP 7 Overview

Deployment Location: 4/28/2007, 12:00 UTC at 88° 48.6’N, 12° 30.8’W

Last Location: 2/7/2008, 22:00 UTC at 59° 9.2’ N, 41° 50.2’ W

Duration: 286 days

Distance Traveled: 4842 km

Number of profiles: 746 in 186 days

Other instruments: IMB 2007-D, AOFB 11, Weatherex

ITP 7 was deployed on a 2.5 m thick icefloe in the Transpolar Drift as part of the North Pole Environmental Observatory (NPEO) . On the same icefloe, a Naval Postgraduate School Arctic Ocean Flux Buoy (AOFB) and Climate Change College meteorological mast were also installed. On a separate icefloe approximately 1 km away, a US Army Cold Regions Research and Engineering Laboratory (CRREL) Ice Mass Balance Buoy (IMB 2007-D) and NOAA/PMEL Weatherex station were deployed. The ITP operated on a fast sampling schedule of 4 one-way profiles between 7 and 760 m depth each day, obtaining 746 profiles until the profiler dragged over the East Greenland shelf. The surface package continued to transmit GPS locations for another 100 days.

Only 70 miles from the North Pole, ITP 7 as deployed in April 2007. The ITP was one component of an IBO installed as a component of the NPEO.