ITP54

Deployment Location: 8/6/2011, 22:00 UTC at 77° 0.1’N, 140° 5.7’E

Last Location: 8/27/2014, 23:00 UTC at 82° 24.5’ N, 173° 40.3’ W

Duration: 1117 days

Distance Traveled: 11,071 km

Number of profiles: 1055 in 351 days

Other instruments: IMBB 2011-J, AOFB 25, 3 Ice Beacons, Uptempo

ITP54 was deployed on a 2.23 m thick ice floe in the Beaufort Sea as part of the Beaufort Gyre Observing System (BGOS) during the JOIS 2011 cruise on the CCGS Louis S. St. Laurent. On the same icefloe, a Naval Postgraduate School Arctic Ocean Flux Buoy (AOFB 25), a US Army Cold Regions Research and Engineering Laboratory (CRREL) Ice Mass Balance Buoy (IMB 2011-J), a Yale University array of 3 MetOcean Ice Beacons, and an Uptempo buoy were also installed. The ITP included a dissolved oxygen sensor and a fixed SBE-37 Microcat at 6 m depth and operated on a standard sampling schedule of 2 one-way profiles between 7 and 760 m depth each day.

Through the fog, the IMB and CCGS Louis St. Laurent are barely visible behind ITP 54 shortly after deployment. (Rick Krishfield)