Skip to content


The ITP program is an international effort with contributions from the European Union program DAMOCLES (Developing Arctic Modeling and Observing Capabilities for Long-term Environmental Studies) and collaborations with the Alfred Wegener Institute for Polar and Marine Research (AWI)Arctic and Antarctic Research Institute (AARI), French Polar Institute (IPEV)Ocean University ChinaShirshov Institute of Oceanography, the U.K. ASBO and TEA-COSI programmes, U.S. Office of Naval ResearchYale University and WHOI.

Current positions of active ITPs are shown to the right. Status information for the active systems and summaries of the data acquired from systems that have completed their missions are accessible using the links in the table below or the navigation buttons on the left.  For more information see the Data Products page, which includes full documentation of the data processing procedures and file formats, access to the WHOI ITP data repository holding all available data, information on how to cite and acknowledge ITP data, and links to national data archives.

Latest locations of all active ITPs.

Plots of engineering information and of the preliminary ocean profile data for each of the ITP systems are available here, or via the navigation buttons to the left:

Deployment yearCompleted Missions
Active Systems
2005ITP1, ITP3 
2006ITP4, ITP5, ITP6,  
2007ITP7, ITP8, ITP9ITP10, ITP11, ITP12, ITP13, ITP14, ITP15ITP16, ITP17, ITP18  
2008ITP19, ITP20, ITP21, ITP22, ITP23, ITP24ITP25, ITP26, ITP27ITP28, ITP29, ITP30, ITP31-S 
2009ITP32, ITP33ITP34, ITP35, ITP36, ITP37 

ITP38LMP39-CL, ITP40-SITP41, ITP42, ITP43, ITP44

2011LMP45-FHLLMP46-FHL, ITP47, ITP48, ITP49ITP50, ITP51, ITP52, ITP53ITP54, ITP55 
2012ITP56, ITP57, ITP58ITP60, ITP62, ITP63, ITP64, ITP65ITP66, itm1, itm2  

ITP59, ITP61, ITP67,
ITP68, ITP71, ITP72, ITP73ITP75, itm3, ITP69, ITP70, ITP74,

2014ITP76, ITP77, ITP78, ITP79
, ITP80, ITP81
, ITP82
, ITP83
, ITP84ITP85, ITP86, ITP87 itw1, itw2
2015ITP88, ITP90, ITP91, ITP92, ITP93ITP89

ITP97, ITP98, ITP99, itm5


ITP95, ITP100, ITP101, ITP108

2018ITP103, ITP104, ITP105, ITP107ITP109


2019ITP94, ITP102, ITP111, ITP112, ITP113, ITP114, ITP116, ITP117, ITP118, ITP119

2020ITP120, ITP121
2021ITP115, ITP122, ITP123, ITP124, ITP125, ITP126, ITP127, ITP128, ITP129, TOP02, TOP03, TOP04
2022ITP130, ITP131, ITP132-S, ITP136, ITP137, TOP05, TOP06, TOP07
2023ITP135, ITP138, ITP139, ITP140, ITP141, TOP08, TOP09, TOP11

While most ITPs are deployed in the Arctic Basin, some have been adapted for deployment in the Antarctic (-S in itallics) and in lakes (Crater Lake, Oregon -CL and Flathead Lake, Montana -FL in bold).  The Ice-Tethered Micro-mooring, or "itm", is based on the ITP technology but includes several fixed instruments on the mooring line instead of a profiling unit.  The Ice-Tethered Winch, or "itw", is based on a combination of an ITP surface package with a profiling Arctic Winch. The Tethered Ocean Profiler, or "TOP", is a combination of an ITP surface package with a specially designed profiler to sample the upper 200 m of the water column completely up to the under-ice surface.

Scroll To Top