Nansen and Amundsen Basins Observational System


— at the Atlantic-Arctic frontier since 2002 —

NABOS Research Cruise 2021

The 2021 expedition marks the 13th NABOS cruise to the Arctic Ocean since 2002. The 40-day cruise will assess the state of the eastern Arctic Ocean through continued monitoring of physical and chemical parameters related to the ocean, sea ice and atmosphere.



We have been monitoring the interface between the Atlantic Ocean and the Arctic Ocean since 2002.



See cruise maps, data, reports, and more from 2002 to the present.



A wealth of scientific publications and other outreach materials have resulted from our research.


NABOS is part of the Arctic Observing Network. NABOS research is funded by the National Science foundation and the National Oceanic and Atmospheric Administration.

Since the early 2000s, the goal of NABOS has been to compile a cohesive picture of climatic changes in the Eurasian and Makarov basins of the Arctic Ocean. NABOS works to understand:

  • how boundary currents transport Atlantic Water
  • how Atlantic Water interacts with shelf waters, the deep basin interior, and the upper ocean
  • changes in upper ocean circulation within these basins

Partners with Arctic Observing Network funding

  • International Arctic Research Center, University of Alaska Fairbanks
  • Institute of Marine Science, University of Alaska Fairbanks
  • Applied Physics Laboratory, University of Washington

Other partners

  • Arctic and Antarctic Research Institute, Russia
  • Bigelow Laboratory for Ocean Sciences, USA
  • Cold Regions Research and Engineering Laboratory, USA
  • Henriksen Shipping Company
  • Jet Propulsion Laboratory, USA
  • National Oceanography Center, Southampton, UK
  • Woods Hole Oceanographic Institution, USA

What we do