Oceanography The Official Magazine of
The Oceanography Society
Volume 24 Issue 03

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Volume 24, No. 3
September 2011

The Ice-Tethered Profiler: Argo of the Arctic

John M. Toole | Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
Richard A. Krishfield | Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
Mary-Louise Timmermans | Department of Geology and Geophysics, Yale University, New Haven, CT, USA
Andrey Proshutinsky | Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, MA, USA

Article Abstract

Ice-Tethered Profilers (ITPs), first deployed in fall 2004, have significantly increased the number of high-quality upper-ocean water-property observations available from the central Arctic. This article reviews the instrument technology and provides a status report on performance, along with several examples of the science that ITPs and companion instrumentation support.


Toole, J.M., R.A. Krishfield, M.-L. Timmermans, and A. Proshutinsky. 2011. The Ice-Tethered Profiler: Argo of the Arctic. Oceanography 24(3):126–135, http://dx.doi.org/10.5670/oceanog.2011.64.


Boehme, L., P. Lovell, M. Biuw, F. Roquet, J. Nicholson, S.E. Thorpe, M.P. Meredith, and M. Fedak. 2009. Technical Note: Animal-borne CTD-satellite relay data loggers for real-time oceanographic data collection. Ocean Science Discussions 6:1,261–1,287, http://dx.doi.org/10.5194/osd-6-1261-2009.
Jackson, J.M., E.C. Carmack, F.A. McLaughlin, S.E. Allen, and R.G. Ingram. 2010. Identification, characterization and change of the near-surface temperature maximum in the Canada Basin, 1993–2008. Journal of Geophysical Research 115, C05021, http://dx.doi.org/10.1029/2009JC005265.
Johnson, G.C., J.M. Toole, and N.G. Larson. 2007. Sensor corrections for Sea-Bird SBE-41CP and SBE-41 CTDs. Journal of Atmospheric and Oceanic Technology 24:1,117–1,130, http://dx.doi.org/10.1175/JTECH2016.1.
Kikuchi, T., J. Inoue, and D. Langevin. 2007. Argo-type profiling float observations under the Arctic multiyear ice. Deep-Sea Research Part I 54:1,675–1,686, http://dx.doi.org/10.1016/j.dsr.2007.05.011.
Krishfield, R.A., S. Honjo, W.B. Tucker III, T. Nakanishi, and T. Takizawa. 1993. Automated Ice-Ocean Environmental Buoys (IOEBs) for the telemetry of air, ice and ocean data from the polar oceans. Proceedings of the IEEE Oceans ‘93 Conference II:47–52.
Krishfield, R.A., A.J. Plueddemann, and S. Honjo. 2002. Eddies in the Arctic Ocean from IOEB ADCP Data. Woods Hole Oceanographic Institution Technical Report WHOI-2002-09, 144 pp.
Krishfield, R., J. Toole, A. Proshutinsky, and M.-L. Timmermans. 2008a. Automated Ice-Tethered Profilers for seawater observations under pack ice in all seasons. Journal of Atmospheric and Oceanic Technology 25:2,091–2,095, http://dx.doi.org/10.1175/2008JTECHO587.1.
Krishfield, R., J. Toole, and M.-L. Timmermans. 2008b. ITP Data Processing Procedures. Woods Hole Oceanographic Institution, 24 pp. Available online at: http://www.whoi.edu/page.do?pid=23096 (accessed June 23, 2011).
Morison, J.H., S.P. Burke, H. Steltner, and R. Andersen. 1982. SALARGOS temperature-conductivity buoys. Pp. 1,255–1,260 in Proceedings of the IEEE Oceans `82 Conference. http://dx.doi.org/10.1109/OCEANS.1982.1151938.
Plueddemann, A.J., R. Krishfield, T. Takizawa, K. Hatakeyama, and S. Honjo. 1998. Upper ocean velocities in the Beaufort Gyre. Geophysical Research Letters 25:183–186, http://dx.doi.org/10.1029/97GL53638.
Proshutinsky, A., R. Krishfield, M.-L. Timmermans, J. Toole, E. Carmack, F. McLaughlin, W.J. Williams, S. Zimmermann, M. Itoh, and K. Shimada. 2009. Beaufort Gyre freshwater reservoir: State and variability from observations. Journal of Geophysical Research 114, C00A10, http://dx.doi.org/10.1029/2008JC005104.
Proshutinsky, A., A. Plueddemann, J. Toole, R. Krishfield, eds. 2004. Ice-Based Observatories: A Strategy for Improved Understanding of the Arctic Atmosphere-Ice-Ocean Environment Within the Context of an Integrated Arctic Observing System. Report of an international workshop sponsored by The National Science Foundation, Woods Hole Oceanographic Institution, Woods Hole, MA, 65 pp.
Rabe, B., M. Karcher, U. Schauer, J.M. Toole, R.A. Krishfield, S. Pisarev, F. Kauker, R. Gerdes, and T. Kikuchi. 2011. An assessment of Arctic Ocean freshwater content changes from the 1990s to the 2006–2008 period. Deep-Sea Research Part I 58:173–185, http://dx.doi.org/10.1016/j.dsr.2010.12.002.
Roemmich, D., and the Argo Steering Team. 2009. Argo: The challenge of continuing 10 years of progress. Oceanography 22(3):46–55, http://dx.doi.org/10.5670/oceanog.2009.65.
Roemmich, D., and W.B. Owens. 2000. The Argo Project: Global ocean observations for the understanding and prediction of climate variability. Oceanography 13(2):45–50. Available online at: http://tos.org/oceanography/issues/issue_archive/issue_pdfs/13_2/13.2_roemmich_brechner.pdf (accessed June 23, 2011).
Roemmich, D., G.C. Johnson, S. Riser, R. Davis, J. Gilson, W.B. Owens, S.L. Garzoli, C. Schmid, and M. Ignaszewski. 2009. The Argo Program: Observing the global oceans with profiling floats. Oceanography 22(2):24–33, http://dx.doi.org/10.5670/oceanog.2009.36.
Timmermans, M.-L., R. Krishfield, S. Laney, and J. Toole, 2010. Ice-Tethered Profiler measurements of dissolved oxygen under permanent ice cover in the Arctic Ocean. Journal of Atmospheric and Oceanic Technology 27:1,936–1,949, http://dx.doi.org/10.1175/2010JTECHO772.1.
Timmermans, M.-L., A. Proshutinsky, R.A. Krishfield, D.K. Perovich, J.A. Richter-Menge, T.P. Stanton, and J.M. Toole. In press. Surface freshening in the Arctic Ocean’s Eurasian Basin: An apparent consequence of recent change in the wind-driven circulation. Journal of Geophysical Research, http://dx.doi.org/10.1029/2011JC006975.
Timmermans, M.‐L., J. Toole, R. Krishfield, and P. Winsor. 2008a. Ice‐Tethered Profiler observations of the double‐diffusive staircase in the Canada Basin thermocline. Journal of Geophysical Research 113, C00A02, http://dx.doi.org/10.1029/2008JC004829.
Timmermans, M-L., J. Toole, A. Proshutinsky, R. Krishfield, and A. Plueddemann. 2008b. Eddies in the Canada Basin, Arctic Ocean, observed from Ice-Tethered Profilers. Journal of Physical Oceanography 38:133–145, http://dx.doi.org/10.1175/2007JPO3782.1.
Timokhov, L., and F. Tanis, eds. 1997. Joint U.S.-Russian Atlas of the Arctic Ocean (Winter) [CD-ROM]. Environmental Research Institute of Michigan, Ann Arbor, MI.
Timokhov, L., and F. Tanis. 1998. Joint U.S.-Russian Atlas of the Arctic Ocean (Summer) [CD-ROM]. Environmental Research Institute of Michigan, Ann Arbor, MI.
Toole, J. M., M.-L. Timmermans, D.K. Perovich, R.A. Krishfield, A. Proshutinsky, and J.A. Richter-Menge. 2010. Influences of the ocean surface mixed layer and thermohaline stratification on Arctic Sea ice in the central Canada Basin. Journal of Geophysical Research 115, C10018, http://dx.doi.org/10.1029/2009JC005660.